Managing extended storage
Working with extended storage components
HCP uses extended storage components to provide you with an interface to:
•Configure HCP to provide the information that HCP needs to use to access specific extended storage devices and cloud storage service endpoints.
•Configure HCP to monitor, manage, and use all of the extended storage that’s accessed using one or more extended storage components of the same type as a single storage pool.
•Monitor the health, availability, capacity, and usage of the extended storage that’s represented by each component, and appropriately provision storage.
•Pause (suspend), retire, or abandon extended storage that’s represented by a single storage component or retire all of the extended storage that’s represented by the components in a single storage pool.
You can use the Storage page in the System Management Console to perform all of the above tasks.
To display the Storage page, in the System Management Console menu, click Storage.
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Roles: To view the Storage page, you need the monitor or administrator role. To create, modify, or delete extended storage components and extended storage pools, you need the administrator role. |
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Creating an extended storage component
You use the Add Component wizard on the Storage page to create and configure an extended storage component. Each time you use the Storage page to access the Add Component wizard, you are prompted to select the type of extended storage component that you want to create. The System Management Console then dynamically builds the pages in the Add Component wizard to present only the fields you need to use to configure HCP to access and use the specified type of extended storage component.
To create an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click Add Component.
The Get Started wizard opens.
3.In the Get Started wizard, click the arrow to display a list of supported extended storage component types, and select the type of component that you want to create.
The Get Started wizard exits and the System Management Console opens the applicable Add Component wizard for the type of extended storage component that you selected.
4.Use the fields on each page of the Add Component wizard to specify the information that HCP needs to use to access and use the extended storage that’s represented by the component you’re creating:
oTo create an Amazon S3 storage component, use the fields to specify the configuration information that’s described in Amazon S3 storage components.
oTo create a Google Cloud storage component, use the fields to specify the configuration information that’s described in Google Cloud storage components.
oTo create a Microsoft Azure storage component, use the fields to specify the configuration information that’s described in Microsoft Azure storage components.
oTo create an S3 compatible storage component, use the fields to specify the configuration information that’s described in S3 compatible storage components.
oTo create an NFS storage component, use the fields to specify the configuration information that’s described in NFS storage components.
You use the Next button at the bottom of each page to save the information you entered on that page and display the next page in the Add Component wizard.
The last page in each wizard is the Review page, which displays all of the extended storage component configuration information that you’ve entered in the wizard.
5.On the Review page in the Add Component wizard, take one of these actions:
oIf the extended storage component configuration information that you entered is correct, click Finish at the bottom of the page.
oIf the extended storage component configuration information is not correct, use the Previous and Next buttons at the bottom of each page to navigate through the pages in the wizard and change any settings that are not correct.
When you’re finished making changes to the storage component configuration settings, navigate to the Review page and click Finish.
When you click Finish at the bottom of the Review page, the wizard exits. The System Management Console displays the Components panel on the Storage page. This panel displays a list of all of the primary storage components and extended storage components that exist on the HCP system and provides information about the current status of each existing component, including the new one you just created.
Each extended storage component provides HCP with the information it needs to access and use the storage that’s represented by that component. However, HCP can actually use the storage that’s represented by a given component only if at least one of its access points (a mount point, bucket, or container) is contained in a storage pool that’s included in at least one storage tier that’s defined for a namespace by its service plan.
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Modifying an extended storage component
You can use the Components panel on the Storage page to view and modify the configuration of any extended storage component. To display this panel, click the Components tab on the left side of the Storage page.
You can use the Components panel to modify the configuration of any extended storage component in any of the the following ways:
•Change one or more of the configuration settings that are specified when the component is first created:
oFor information about the configuration settings specified when an Amazon S3 storage component is created, see Amazon S3 storage components.
oFor information about the configuration settings specified when a Google Cloud storage component is created, see Google Cloud storage components.
oFor information about the configuration settings specified when a Microsoft Azure storage component is created, see Microsoft Azure storage components.
oFor information about the configuration settings specified when an S3 compatible storage component is created, see S3 compatible storage components.
oFor information about the configuration settings specified when an NFS storage component is created, see NFS storage components.
For instructions on modifying these configuration settings see Modifying the configuration setting used for an extended storage component.
•Modify one or more of the default values for the advanced settings used for the extended storage component. Each type of extended storage component has slightly different advanced settings.
Typically, you do not need to change any of the default values that are used for the advanced settings for an extended storage component. However, you should familiarize yourself with the advanced settings that are used for each extended storage component that you create and configure in HCP, so that you can identify any advanced settings that you might need to change.
For instructions on accessing the advanced settings for an extended storage component, see Modifying the configuration setting used for an extended storage component.
•Add a new access point (a mount point, bucket, or container) to an existing storage component.
•Delete any access point that’s not currently in use.
•For all types of extended storage components except NFS:
oConfigure a new user account to be used to access the cloud storage service endpoint or S3 compatible storage device endpoint that’s represented by the component.
oDelete any user account that’s not currently in use.
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Modifying the configuration setting used for an extended storage component
To modify the configuration settings that are specified for an extended storage component when it’s first created:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component that you want to modify.
3.At the top of the panel that opens, click the Settings tab.
4.On the panel that opens, use the fields to change any of the settings that are currently used for the component.
5.Click Update Settings.
To modify the advanced configuration settings that are used for an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component that you want to modify.
3.At the top of the panel that opens, click the Advanced tab.
4.On the panel that opens, use the fields to change any of the settings that are currently used for the component or click Reset Advanced Settings to change all advanced settings to use the default values.
5.Click Update Settings.
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Adding access points to an extended storage component
To add one or more access points (mount points, buckets, or containers) to an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component for which you want to configure one or more new access points.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s used for the component (Mount Points, Buckets, or Containers).
4.At the bottom of the panel that opens, click Add AccessPointType.
5.For every type of extended storage except NFS, in the window that opens, use the dropdown list to select the account label that’s associated with the user account that’s used to access the bucket or container you want to add, and click Go. The window does not appear if you’re adding a mount point to an NFS storage component.
The Add AccessPointType wizard opens, displaying a table that contains a list of existing access points (mount points, buckets, or containers) that are available for use, along with a check box that corresponds to each access point in the list.
6.Click AccessPointType Actions.
7.Take either or both of these actions:
oTo add existing access points to the storage component:
1.In the AccessPointType Actions section, in the Action field, select Add existing.
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Note: When you first expand the AccessPointType Actions section, Add existing is selected by default. |
2.Use the check boxes in the left column in the table to select each existing access point that you want to add to the storage component configuration.
3.Click Go.
oTo create one or more new buckets or containers for use by the specified user account or to create one or more mount points:
1.In the AccessPointType Actions section, in the Action field, select Create new.
2.In the AccessPointTypeName field, for each new access point you want to create, type a name for the new access point, and click Go.
Each new access point you create is added to the list of existing access points, and its checkbox is automatically selected.
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Note: You can delete any new access point from the list before you actually create the new access point on the extended storage device. To do this, click the delete control ( |
3.When you’re finished creating new access points, in the Action field, select Add existing, and then click Go.
8.When you’re finished adding both new and existing access points to the extended storage components, click Finish at the bottom of the panel.
When you click Finish, the Add AccessPointType wizard exits, and the AccessPointType panel (Mount Points, Buckets, or Containers) for the storage component you’ve modified is displayed, showing the list of access points that are currently configured for the component and the current status of each access point. All of the new and existing access points you’ve just added are included in the list.
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Configuring a new user account for access to an extended storage endpoint
To configure a new user account to be used to access any cloud storage service endpoint or S3 compatible storage device endpoint that’s represented by an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component for which you want to configure a new user account.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s used for the component (Buckets or Containers).
4.At the top of the Buckets or Containers panel, click the Accounts tab.
5.At the bottom of the Accounts panel, click Add Account.
The Add Account wizard opens.
6.In the Add Account wizard, specify the following information to configure the new user account:
oThe account label that you want HCP to use to identify the user account in the System Management Console
oThe access key and secret key that HCP needs to use to access the new user account
oFor S3 compatible storage components, the authentication type you want to use to authenticate all requests sent from HCP to the storage component
oOptionally, any custom request headers that you want HCP to include in the access request URLs that are sent to the cloud storage service or storage device that’s represented by the storage component in order to request read or write access to the storage associated with the new user account
7.Click Finish.
When you click Finish, the Add Account wizard exits, and the AccessPointType panel (Buckets or Containers) for the storage component you’ve modified is displayed, showing the list of user accounts that are currently configured for the component and the current status of each account. The new and user account you’ve just added is included in the list.
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Updating the owner of a bucket in an extended storage component
Before you update the owner of a bucket or container in an extended storage component, make sure you have configured a new user account for access to any cloud storage service endpoint or S3 compatible storage device endpoint represented by an extended storage component. This procedure is not applicable to NFS components. For information about configuring a new user account, see Configuring a new user account for access to an extended storage endpoint.
To update the owner of a bucket in an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.Click the component you want.
3.Click the tab for the applicable type of access point (Buckets or Containers).
4.Click the Buckets or Containers tab, as applicable.
5.Click the bucket or container that you have created and want to update.
6.In the Select Account section that opens, select the account that you want to own the bucket.
7.Click Continue.
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Deleting an unused access point from an extended storage component
To delete an unused access point from an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component from which you want to delete an unused access point.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s used for the component (Mount Points, Buckets, or Containers).
The AccessPointType panel opens, showing a list of access points that are currently configured for the component. A delete control ( 
) appears in the row for each unused access point.
4.Click the delete control for any access point to delete it from the component.
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Deleting an unused user account from an extended storage component
To delete an unused user account from an extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component from which you want to delete an unused user account.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s used for the component (Buckets or Containers).
4.At the top of the Buckets or Containers panel, click the Accounts tab.
The Accounts panel opens, showing a list of user accounts that are currently configured for the component. A delete control ( ) appears in the row for each unused user account.
5.Click the delete control for any user account to delete it from the component.
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Uploading an account certificate for CAP authentication
The C2S CAP server acts as an intermediary between HCP and AWS STS authentication. CAP looks up the user's S3 credentials based off HCP account credentials sent to CAP. If the check passes, CAP then sends the S3 credentials to a predefined AWS STS endpoint. STS, in turn, issues a temporary token which CAP sends back to HCP.
C2S CAP authentication can only be used with the S3 compatible component. In order to use C2S CAP authentication you need to provide an account certificate.
To upload a C2S CAP certificate:
1.On the Storage ► Certificates & Keys page, under the Account Certificates panel, click Browse and navigate to the location of your C2S CAP authentication certificate.
2.Click Upload Certificate.
3.Click Next.
4.Review your certificate information.
5.Click Finish.
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Roles: In order to upload a account certificate, you need the administrator role. |
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Pausing and resuming an extended storage component
At any time when an extended storage component is in use, you can pause, or suspend all read and write operations, on the extended storage that’s represented by any extended storage component.
In certain situations, the storage that’s represented by an extended storage component may become temporarily inaccessible, due to scheduled maintenance or due to an unforeseen problem with an extended storage device or cloud storage service endpoint. If this happens, you might need to temporarily pause, or suspend all read and write operations on, a given storage component.
While a storage component is paused, HCP considers the extended storage that’s represented by the component to be unavailable for storage tiering, and does not attempt to communicate with that device or service. Therefore, any alerts that would normally be generated by attempts to communicate with the inaccessible extended storage device or cloud storage service endpoint do not appear when the component is paused. When an extended storage component is resumed, the storage that’s represented by the component becomes available for storage tiering, HCP resumes attempting to communicate with the extended storage device or cloud storage endpoint, and if such attempts fail, HCP displays the applicable alerts on the Components panel on the Storage page.
To pause or resume a specific extended storage component:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component that you want to pause or resume.
3.At the top of the panel that opens, click the Manage tab.
4.On the Manage panel, take one of these actions:
oTo pause a component, click Pause Component. HCP pauses the component, and the panel displays the Resume Component button.
oTo resume a component that’s currently paused, click Resume Component. HCP resumes communications with the component, and the panel displays the Pause Component button.
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Deleting or abandoning an extended storage component
If the storage that’s represented by an extended storage component is not currently being used to store objects in any namespaces defined on the HCP system, you can safely delete that storage component.
If, however, the storage that’s represented by an extended storage component is currently being used to store object data, you cannot delete that component. Instead you need to either retire that component or abandon it.
When you retire an extended storage component, HCP migrates the data off that component and then deletes that component from the system. For information about retiring an extended storage component, see Retiring storage.
When you abandon an extended storage component, HCP deletes that component from the system without attempting to migrate any of the stored data off the extended storage component. This operation is not recommended because it may result in data loss. If the only existing copies of the data for a given object are stored on a single extended storage component, when you abandon that component, the object data becomes permanently inaccessible to HCP.
Retiring and deleting a component is a much safer alternative to abandoning that component, as retiring a component ensures that the data stored on that component remains protected at the applicable levels. You should consider abandoning an extended storage component only as a last resort and only after you’ve taken the necessary steps to ensure that the data stored on the component exists elsewhere in the HCP system.
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Deleting an unused extended storage component
To delete an extended storage component that’s not currently in use:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component that you want to delete.
3.At the top of the panel that opens, click the Manage tab.
4.On the Manage panel, click Delete Component.
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Abandoning an extended storage component
To abandon an extended storage component that’s currently in use:
1.On the left side of the Storage page, click the Components tab.
2.On the Components panel, click the table row that contains the name of the component that you want to abandon.
3.At the top of the panel that opens, click the Manage tab.
4.On the Manage panel, click Abandon Component.
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Working with extended storage pools
HCP uses extended storage pools to represent logical groups of storage components that can be used as storage tiers. Each storage pool consists of one or more storage components that are used to access the same type of storage.
Each extended storage pool contains one or more extended storage component access points (mount points, buckets, or containers) that are all used to access the same type of extended storage. A given NFS storage pool includes all of the storage that’s allocated to all of the NFS volumes that are accessed using the mount points in the pool. A given Amazon S3, Google Cloud, S3 compatible, or Microsoft Azure storage pool includes all of the storage that’s allocated to the buckets or containers in the pool.
Each storage tier that’s defined for a namespace by its service plan typically consists of only one storage pool, but a tier can be configured to use multiple storage pools. To store objects on a given extended storage tier, HCP uses all of the storage that’s allocated to all of the extended storage component access points (mount points, buckets, or containers) that are contained in the storage pools that are configured for the storage tier. Therefore, the capacity of a given extended storage pool is the total amount of space that can be accessed using the extended storage component access points included in the pool. You can add access points to an extended storage pool at any time, thereby increasing the capacity of the pool.
Each extended storage component provides HCP with the information it needs to use one or more mount points, buckets, or containers to access and use the storage that’s represented by that extended storage component. However, HCP can actually use the storage that’s represented by a given extended storage component only if at least one of its access points is contained in a storage pool that’s included in at least one storage tier that’s defined for a namespace by its service plan.
You use the Storage page in the System Management Console to create, modify, manage, delete, and retire extended storage pools and to monitor the health, availability, capacity, and usage of all of the storage that’s used for each storage pool that’s defined on the HCP system.
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Creating an extended storage pool
You use the Create Pool wizard on the Storage page to create and configure an extended storage pool. Each time you use the Storage page to access the Create Pool wizard, you are prompted to select the type of extended storage pool that you want to create. The System Management Console then dynamically builds the pages in the Create Pool wizard to present only the fields you need to use to configure HCP to access and use the specified type of extended storage pool.
To create an extended storage pool:
1.On the left side of the Storage page, click the Pools tab.
2.On the Pools panel, click Create Pool.
The Get Started wizard opens.
3.In the Get Started wizard, click the arrow to display a list of supported extended storage pools, and select the type of pool that you want to create.
The Get Started wizard exits and the System Management Console opens the applicable Create Pool wizard for the type of extended storage pool that you selected.
4.Use the fields on each page of the Create Pool wizard to specify the extended storage component access points that you want to include in the pool to specify the extended storage pool configuration settings that you want to use for the new pool you’re creating:
oTo create an Amazon S3 storage pool, use the fields to specify the configuration information that’s described in Amazon S3 storage pools.
oTo create a Google Cloud storage pool, use the fields to specify the configuration information that’s described in Google Cloud storage pools.
oTo create a Microsoft Azure storage pool, use the fields to specify the configuration information that’s described in Microsoft Azure storage pools.
oTo create an S3 compatible storage pool, use the fields to specify the configuration information that’s described in S3 compatible storage pools.
oTo create an NFS storage pool, use the fields to specify the configuration information that’s described in NFS storage pools.
You use the Next button at the bottom of each page to save the information you entered on that page and display the next page in the Create Pool wizard.
The last page in each wizard is the Review page, which displays all of the extended storage pool configuration information that you’ve entered in the wizard.
5.On the Review page in the Create Pool wizard, take one of these actions:
oIf the extended storage pool configuration information that you entered is correct, click Finish at the bottom of the page.
oIf the extended storage pool configuration information is not correct, use the Previous and Next buttons at the bottom of each page to navigate through the pages in the wizard and change any settings that are not correct.
When you’re finished making changes to the storage pool configuration settings, navigate to the Review page and click Finish.
When you click Finish at the bottom of the Review page, the wizard exits. The System Management Console displays the Pools panel on the Storage page. This panel displays a list of all of the primary storage pools and extended storage pools that exist on the HCP system and provides information about the current status of each existing pool, including the new one you just created.
Each extended storage pool provides HCP with the information it needs to access and use the storage that’s represented by that pool. However, HCP can actually use the storage that’s represented by a given pool only if it’s included in at least one storage tier that’s defined for a namespace by its service plan.
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Modifying an extended storage pool
You can use the Pools panel on the Storage page to view and modify the configuration of any extended storage pool. To display this panel, click the Pools tab on the left side of the Storage page.
You can use the Pools panel to modify the configuration of any extended storage pool in any of the following ways:
•Change one or more of the configuration settings that are specified when the pool is first created:
oFor information about the configuration settings specified when an Amazon S3 storage pool is created, see Amazon S3 storage pools.
oFor information about the configuration settings specified when a Google Cloud storage pool is created, see Google Cloud storage pools.
oFor information about the configuration settings specified when a Microsoft Azure storage pool is created, see Microsoft Azure storage pools.
oFor information about the configuration settings specified when an S3 compatible storage pool is created, see S3 compatible storage pools.
oFor information about the configuration settings specified when an NFS storage pool is created, see NFS storage pools.
For instructions on modifying these configuration settings see Modifying the configuration settings used for an extended storage pool.
•Add one or more storage component access points (mount points, buckets, or containers) to an extended storage pool. For instructions, see Adding access points to an extended storage pool.
•Delete one or more storage component access points from an extended storage pool. For instructions, see Deleting access points from an extended storage pool.
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Modifying the configuration settings used for an extended storage pool
To modify the configuration settings that are specified for an extended storage pool when it’s first created:
1.On the left side of the Storage page, click the Pools tab.
2.On the Pools panel, click the table row that contains the name of the pool that you want to modify.
3.At the top of the panel that opens, click the Settings tab.
4.On the panel that opens, use the fields to change any of the settings that are currently used for the pool.
5.Click Update Settings.
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Adding access points to an extended storage pool
To add one or more access points (mount points, buckets, or containers) to an existing extended storage pool:
1.On the left side of the Storage page, click the Pools tab.
2.On the Pools panel, click the table row that contains the name of the pool to which you want to add one or more access points.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s contained in the pool (Mount Points, Buckets, or Containers).
The AccessPointType panel opens, displaying a table that contains a list of existing access points (mount points, buckets, or containers) that can be included in the type of storage pool that you’re currently configuring. The access points that are currently included in the pool are selected.
4.Select each existing access point that you want to add to the storage pool.
5.Click Update Settings.
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Deleting access points from an extended storage pool
To delete one or more unused access points (mount points, buckets, or containers) from an existing extended storage pool:
1.On the left side of the Storage page, click the Pools tab.
2.On the Pools panel, click the table row that contains the name of the pool from which you want to delete one or more access points.
3.At the top of the panel that opens, click the tab that corresponds to the type of access point that’s contained in the pool (Mount Points, Buckets, or Containers).
The AccessPointType panel opens, displaying a table that contains a list of existing access points (mount points, buckets, or containers) that can be included in the type of storage pool that you’re currently configuring. The access points that are currently included in the pool are selected.
4.Deselect each existing access point that you want to delete from the storage pool.
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Note: Once you store data on an NFS volume, you cannot delete it from its NFS storage pool. Also, you cannot delete all of the access points in a storage pool if that pool is currently used for a storage tier that’s defined for a namespace by its service plan. |
5.Click Update Settings.
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Remounting an NFS volume
If an NFS volume is experiencing problems, you can manually try to remount that NFS volume. Before doing that, however, you should ensure that the device hosting the NFS volume and the network connection to that device are functioning properly. You should also ensure that the exported share that corresponds to the NFS volume is configured correctly on the host device.
HCP can take up to a minute to respond to a remount request.
To manually try to remount an NFS volume:
1.On the left side of the Storage page, click Components.
2.In the components list, click the name of the NFS storage component that’s associated with the NFS volume that you want to remount.
3.At the top of the panel that opens, click the Mount Points tab.
4.On the Mount Points panel, in the table row that contains the NFS mount point that corresponds to the NFS volume you want to remount, click the remount control ( 
).
If the manual remount fails, try restarting the node with which the NFS volume is associated. To see which node the NFS volume is associated with, hover over the status icon for the mount point on the Mount Points panel.
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Deleting an extended storage pool
If the storage that’s represented by an extended storage pool is not currently being used to store objects in any namespaces defined on the HCP system, you can safely delete that storage pool.
If, however, the storage that’s represented by an extended storage pool is currently being used to store object data, you cannot delete that pool. Before you can delete a storage pool, you need to first remove the extended storage pool from all storage tiers that currently include that pool and then retire the storage pool by migrating all of the data off it.
When you retire an extended storage pool, HCP migrates the data off that pool and then deletes that pool from the system. For information about retiring an extended storage pool, see Retiring S Series and extended storage pools, components, and volumes.
To delete an extended storage pool that’s not currently in use:
1.On the left side of the Storage page, click the Pools tab.
2.The Pools pane opens, showing a list of storage pools that are currently defined on the HCP system. A delete control ( ) appears in the row for each unused storage pool.
3.Click the delete control for any unused extended storage pool to delete it from the HCP system.
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Storing objects on extended storage tiers
Each extended storage pool consists of one or more extended storage component access points (mount points, buckets, or containers) that are used to access the same type of extended storage. To store objects in a given extended storage pool, HCP uses all of the storage that’s accessed using all of the extended storage component access points that are contained in that pool. You can add access points to an extended storage pool at any time, thereby increasing the capacity of the pool.
The service plan for a namespace defines one or more storage tiers for that namespace, and specifies the rules that determine which tier is used to store each object in that namespace at any given point in the object lifecycle. Each extended storage tier that’s defined for a namespace typically consists of only one extended storage pool, but a tier can be configured to use multiple storage pools. To store objects on a given extended storage tier, HCP uses all of the storage that’s accessed using the extended storage component access points contained in the storage pools that are configured for that tier.
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Considerations for tiering objects from primary storage to S Series or extended storage
When moving an object to a storage tier that includes only S Series or extended storage pools, the Storage Tiering service moves only the object data onto the S Series or extended storage that’s used for the new tier.
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Note: For the purpose of storage tiering, HCP treats parts of multipart objects, chunks for erasure-coded objects, and chunks for erasure-coded parts of multipart objects as individual objects. |
HCP keeps all metadata, including custom metadata, for an object on primary running storage. The system metadata for an object points to each specific NFS volume and each specific S Series or extended storage bucket or container that’s used to store the data for that object. Primary storage keeps metadata even if S Series storage is used as an ingest tier alternative to running storage instead of as a storage tier.
All objects added to a namespace are first written to the ingest tier defined in their namespace service plan. However, HCP can read the data for an object directly from any storage component the object may later be tiered too.
The service plan for a given namespace defines one or more storage tiers for that namespace and specifies a separate DPL setting for each tier, including the ingest tier. When an object is moved from one storage tier to another, all copies of the object data are removed from the previous tier, and the object is then stored only on the new tier. The DPL for the new tier is the total number of copies of the object data that must be stored on that tier. The DPL is also the total number of copies of the object data that must be stored in the HCP repository. (For a metadata-only tier, the DPL is zero.)
When the Storage Tiering service moves an object in a given namespace from a storage tier that includes only ingest tier storage pools to a tier that includes only extended storage pools, the Storage Tiering service removes all existing copies of the data for that object from the ingest tier storage and stores the specified number of copies of the object data only on the extended storage that’s represented by the pools that are configured for the new storage tier.
The Storage Tiering service moves all copies of the data for an object to S Series or extended storage only if all of these are true:
•The cryptographic hash algorithm for the object has been stored in both the primary and secondary metadata for the object.
•The object is not still open for write. For more information about open objects, see Using a Namespace or Using the Default Namespace.
•The object is not a part of an in-progress multipart upload.
•If the namespace containing the object is being replicated and the target tier is extended storage, the object has already been replicated. The Storage Tiering service can move objects to S Series storage before the objects are replicated.
•The namespace containing the object has a service plan that defines a storage tier that includes only S Series or extended storage pools, and the object meets the criteria for being moved to that tier.
An HCP system can have a full copy of the data for an object that is subject to erasure coding but that has not yet been erasure coded. The Storage Tiering service can tier the data for such an object to S Series or spindown storage but not to extended storage.
While the data for an object is stored only on S Series or extended storage:
•If the object is deleted, the data that’s on S Series or extended storage is also deleted
•If the object is an old version that’s pruned, the version data that’s stored on S Series or extended storage is also deleted
•If the object is shredded, the data that’s stored on S Series or extended storage is not shredded
For more information about the movement of objects between primary storage and S Series or extended storage, see Storage Tiering service and Working with service plans.
For more information about S Seriess and extended storage, see Storage for HCP systems.
Trademarks and Legal Disclaimer
© 2015, 2019 Hitachi Vantara Corporation. All rights reserved.
Encryption and compression of objects in storage pools
The configuration of an S Series or extended storage pool specifies whether the data for an object should be encrypted and/or compressed when it’s stored on the S Series or external storage that’s used for that pool. Encryption can be enabled only if it was enabled when HCP was first installed. If encryption was not enabled during installation, the option to encrypt data does not appear anywhere on the System Management Console.
If the encryption option is selected for an S Series or extended storage pool, the Storage Tiering service encrypts object data before writing it to the S Series or extended storage that’s used for that pool. When reading encrypted data from an S Series or extended storage pool, HCP automatically decrypts the data.
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Note: If an extended storage tier contains multiple external storage pools, HCP evenly distributes object data that’s stored on that tier across all of those pools. For this reason, each storage pool that’s configured for a given extended storage tier should be configured to use the same encryption setting (enabled or disabled). |
To encrypt object data for S Series or extended storage, the Storage Tiering service uses the currently active PGP encryption key. To manage PGP encryption keys, go to the System Management Console and click Storage ► Certificates & Keys.
From the Storage ► Certificates & Keys, you can download an existing key by clicking the download control ( 
) for the key. In the Download Encryption Key window that opens, enter the Secret Key Password and reenter the password
If compression is selected for an S Series or extended storage pool, the Storage Tiering service compresses the object data before writing it to the S Series or extended storage that’s used for that pool. When reading compressed data from an S Series or extended storage pool, HCP automatically decompresses the data.
This compression activity is separate from the activity of the Compression/Encryption service. If an object in HCP has been compressed by the Compression/Encryption service, HCP must decompress it before the Storage Tiering service can compress the object data and write it to S Series or extended storage.
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Note: If an extended storage tier contains multiple storage pools, HCP evenly distributes object data that’s stored on that tier across all of those pools. For this reason, each extended storage pool that’s configured for a given storage tier should be configured to use the same compression setting (enabled or disabled). |
If you change the encryption or compression setting for a given S Series or extended storage pool, the change affects only the data that’s stored after you make the change. HCP does not change the data that’s already stored on S Series or extended storage that’s used for the pool. As a result, an S Series or extended storage pool may contain both encrypted and unencrypted data and both compressed and uncompressed data at the same time.
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© 2015, 2019 Hitachi Vantara Corporation. All rights reserved.
Downloading an encryption key
To download a encryption key from the Storage ► Certificates & Keys Encryption Key panel:
1.Click the download control ( ) for the key you want to download.
For an encryption key, the download requires you to specify a password. HCP uses this password to encrypt the key before downloading it.
In the Download Encryption Key window that opens:
oIn the Secret Key password field, type a password for the key. This password can contain any valid UTF-8 characters, including white space.
oIn the Confirm Password field, type the password again.
Then click Download.
2.Save the key file in the location of your choice.
Trademarks and Legal Disclaimer
© 2015, 2019 Hitachi Vantara Corporation. All rights reserved.
Uploading an encryption key
To upload an encryption key to the Storage ► Certificates & Keys Encryption Key panel:
1.Click Upload Key.
2.In the Upload Key window that opens, click Browse for the Upload Key field and select the PGP private key file you want.
3.In the Secret Key Password field, enter the password for the key.
4.Select Use for Encryption.
5.Click Upload Key.
Trademarks and Legal Disclaimer
© 2015, 2019 Hitachi Vantara Corporation. All rights reserved.