Hardware overview
The storage system consists of a controller chassis using a multi-node architecture that deploys a copper or optical link, as well as the basic rack layouts similar to previous model.
Hardware components
The storage system consists of a controller chassis comprising controller boards, drive chassis in which drives are installed, and a node interconnect switch consisting of interconnect switches and an SVP. The storage system also includes cache memory (DIMM) and cache flash memory (CFM).
The controller chassis, drive chassis, and node interconnect switch are installed in a 19-inch Hitachi Universal rack.
Controller chassis
The controller chassis consists of a controller board, front-end module, back-end module, fabric-acceleration module, power supply, and cache flash memory. Controllers are storage system components that cache and manage data, and provide hosts with a coherent, virtualized view of the system. A controller chassis contains two nodes with a 4U controller each, making the chassis 8U high. A storage system can contain 2 to 6 nodes, depending on the storage system model.
The compression accelerator module, which includes the compression accelerator and a fan, is a hardware component for the VSP 5200 and VSP 5600. The compression accelerator performs compression for these models instead of the storage system controllers, resulting in improved performance for the controllers.
Number | Item | Description |
1 | POWER LED |
Green: Storage system is powered on. Amber: Storage system is receiving power. |
2 | READY LED |
Green: Normal operation. |
3 | WARNING LED |
Off: Normal operation. Amber: Component requires maintenance. Blink: Failure requires maintenance. Note: When System Option Mode 1097 is set to ON, the WARNING LED does not blink, even if the following failure service information messages (SIM) are issued: 452xxx, 462xxx, 3077xx, 4100xx, and 410100. LED might turn off during user maintenance. |
4 | ALARM LED |
Off: Normal operation. Red: Processor failure (system might be down). For assistance, contact customer support: https://support.hitachivantara.com/en_us/contact-us.html. |
5 | POWER ON/OFF (main switch) |
Powers the storage system. |
Number | Item | Description |
1 | Controllers |
Controller 1 (bottom) and Controller 2 (top). |
2 | Backup module | N/A |
3 | BACKUP LED |
Green: Power restoration in progress following power outage. Fast blink green: Restoring. Slow blink green: Restoring, or sequential shutdown in progress. |
4 | Cache flash memory | N/A |
5 | ALM LED (for cache flash memory) |
Red: Cache flash memory can be removed. |
6 |
CTL ALM LED |
Red: Controller can be removed. Blink red: Failure with the power supply unit of the controller. Amber: LAN reset switch was pressed. |
7 |
LAN-RST switch |
Use only when instructed by customer support. |
8 |
STATUS LED (for BKMF) |
Green: Charging of the battery in the backup module is complete. Red: Backup module can be removed. Blink red one time: Main battery failure. Blink red two times: Backup battery failure. Blink red three times: Both batteries failed or preventive maintenance replacement of batteries can run. Off: Battery is not mounted, battery-mounting failure occurred, or firmware is being upgraded. Off is normal status for configurations without batteries. |
9 |
POWER ON/OFF (main switch) | Powers the storage system. |
10 |
POWER, READY, WARNING, and ALARM LEDs |
Note: When System Option Mode 1097 is set to ON, the WARNING LED does not blink, even if the following failure service information messages (SIM) are issued: 452xxx, 462xxx, 3077xx, 4100xx, and 410100. |
Number | Item |
1 | Power supply unit |
2 | Front-end module |
3 | LAN blade |
4 | Fabric-acceleration module |
5 | Back-end module |
Number | Item | Description |
1 | ALM / RDY LED | Red: Power supply unit can be replaced. |
2 | RDY LED | Green: Normal operation. |
Controller board
Number | Item | Description |
1 | STATUS |
LED Off: Battery is uninstalled, installed improperly or BKMF firmware is replaced (in case of a configuration with no battery installed, the LEDs for BKMF-10 and BKMF-20 go out). Green On: Battery is fully charged. Green Blinking: Battery is charged or discharged. Red On: BKMF has an error. Red Blinking: BKMF can be removed. A failure occurred in the battery or preventive maintenance replacement of the batteries is possible. |
2 | LAN-RST |
This is a switch for GUM reset. If GUM reboot fails, reset GUM forcibly from the hardware. |
3 | CTL ALM | Red On: The controller board is ready to be removed (when the maintenance work requiring insertion and removal of the controller board is performed). A failure is detected in the controller board (when the maintenance work mentioned above is not performed). Red Blinking: A failure is detected in the controller board, cache memory, or cache flash memory (CFM). Amber On: Indicates that the LAN RESET switch is pressed. |
4 | BACKUP STS |
Green On : Indicates that power outage has occurred or power restoration is in progress after power outage.
|
5 | ALARM | Red On: Cache Flash Memories are removable. |
Number | Item | Description |
1 | ACT/LINK LED | Amber: Link status/data transfer status. |
2 | SPEED LED |
On: Link speed = 1 Gbps. Off: Link speed = 10 Mbps/100 Mbps. |
3 |
LAN ALARM LED | Red: The removal of the LAN Board is possible. |
10-Gbps iSCSI board(optical)
Number | Item | Description |
1 | ISCSI connectors | Connect to Ethernet cables. |
2 | STATUS LED |
Green: Front-end module is in the power-on state. Red: Front-end module has an error. |
3 | PORT LED |
Red: SFP has an error. Blue: Normal link status. Blink blue: Front-end module is in communication status. |
Port assignments for 10-Gbps iSCSI board
Number | Port 1 | Port 2 |
CHB-01A | 1A | 3A |
CHB-01B | 1C | 3C |
CHB-01E | 1E | 3E |
CHB-01F | 1G | 3G |
CHB-02A | 1B | 3B |
CHB-02B | 1D | 3D |
CHB-02E | 1F | 3F |
CHB-02F | 1H | 3H |
CHB-11A | 2A | 4A |
CHB-11B | 2C | 4C |
CHB-11E | 2E | 4E |
CHB-11F | 2G | 4G |
CHB-12A | 2B | 4B |
CHB-12B | 2D | 4D |
CHB-12E | 2F | 4F |
CHB-12F | 2H | 4H |
16-Gbps or 32-Gbps Fibre Channel (4-port) board
Number | Item | Description |
1 | Fibre Channel connectors | Connect to Fibre Channel cables. |
2 |
STATUS LED |
Green: Front-end module is in the power-on state. Red: Front-end module has an error. |
3 | PORT LED |
Red: Small form-factor pluggable can be removed. Blue: Normal link status at 16-Gbps (16-Gbps). Blue: Normal link status at 32-Gbps (32-Gbps). Green: Normal link status at 4-Gbps or 8-Gbps (16-Gbps). Green: Normal link status at 8-Gbps or 16-Gbps (32-Gbps). |
Port assignments for 16-Gbps or 32-Gbps Fibre Channel board
Number | Port 1 | Port 2 | Port 3 | Port 4 |
CHB-01A | 1A | 3A | 5A | 7A |
CHB-01B | 1C | 3C | 5C | 7C |
CHB-01E | 1E | 3E | 5E | 7E |
CHB-01F | 1G | 3G | 5G | 7G |
CHB-02A | 1B | 3B | 5B | 7B |
CHB-02B | 1D | 3D | 5D | 7D |
CHB-02E | 1F | 3F | 5F | 7F |
CHB-02F | 1H | 3H | 5H | 7H |
CHB-11A | 2A | 4A | 6A | 8A |
CHB-11B | 2C | 4C | 6C | 8C |
CHB-11E | 2E | 4E | 6E | 8E |
CHB-11F | 2G | 4G | 6G | 8G |
CHB-12A | 2B | 4B | 6B | 8B |
CHB-12B | 2D | 4D | 6D | 8D |
CHB-12E | 2F | 4F | 6F | 8F |
CHB-12F | 2H | 4H | 6H | 8H |
Back-end module
Number | Item | Description |
1 | PATH 0 connector | Connect to a drive tray. |
2 | PATH 1 connector | Connects to a drive tray. |
3 | STATUS LED |
Green: Back-end module is in the power-on state. Red: Back-end module can be removed safely. |
4 | PORT LED | Blue: Link status is normal. |
Port assignments for the back-end module
Number | Port 0 | Port 1 |
DKB-01D | 01D-0 | 01D-1 |
DKB-01H | 01H-0 | 01H-1 |
DKB-02D | 02D-0 | 02D-1 |
DKB-02H | 02H-0 | 02H-1 |
DKB-11D | 11D-0 | 11D-1 |
DKB-11H | 11H-0 | 11H-1 |
DKB-12D | 12D-0 | 12D-1 |
DKB-12H | 12H-0 | 12H-1 |
Fabric-acceleration module
Number | Item | Description |
1 | Ports | |
2 | TBD |
Blinking (Yellow): The target port is incorrectly connected. On (Yellow): Any of the ports is incorrectly connected. Green: Not used. |
3 | PORT (LINK/LOCATE) |
On (Blue): Linked state. Blinking (Red): A failure has occurred. The port is blocked. On (Red): The cable can be removed. Off: Link down state. |
4 | STATUS |
On (Green): The module is powered on. On (Red): The module can be removed. Off: The module is powered off. |
Port assignments for fabric-acceleration module
Fabric-Acceleration Module Number | Port 0 | Port 1 |
HIE-01C | HIE-01C-0 | HIE-01C-1 |
HIE-01G | HIE-01G-0 | HIE-01G-1 |
HIE-02C | HIE-02C-0 | HIE-02C-1 |
HIE-02G | HIE-02G-0 | HIE-02G-1 |
HIE-11C | HIE-11C-0 | HIE-11C-1 |
HIE-11G | HIE-11G-0 | HIE-11G-1 |
HIE-12C | HIE-12C-0 | HIE-12C-1 |
HIE-12G | HIE-12G-0 | HIE-12G-1 |
Drive box
Drive boxes are compact storage enclosures that hold large numbers of drives and can be installed in a small rack space (EIA-standard rack units).
Number | Item | Description |
1 | POWER LED | Green: Storage system is powered on. |
2 | READY LED |
Green: Normal operation. |
3 | LOCATE LED | Amber: Failure requires maintenance. The LED can be lit/turned off by the Maintenance Utility. |
The storage systems supports the following drive boxes:
- Drive box for SBX (SAS SSDs)
- Drive box for UBX (SAS HDDs)
- Drive box for NBX (NVMe SCM/SSD)
- Drive box for FBX (FMD)
The SBX holds 96 2.5-inch small form factor SAS SSD drives.
Number | Item | Description |
1 | ALM |
Red: Indicates that the removal of the HDD/SSD is possible when the storage system is powered on. |
2 | ACT |
Green: Indicates that the HDD/SSD is powered on. Blinking Green: Indicates that the HDD/SSD is active. The blink speed may differ between HDDs and SSDs; however, this does not indicate a disk error or failure. |
3 | POWER | Green: Indicates that the power supply is supplied to the storage system. |
4 | READY | Green: Indicates that the ENC is operating normally. |
5 | LOCATE |
Amber: Indicates the location of the chassis that detects a failure. The LED can be lit/turned off by Maintenance Utility. |
Number | Item | Description |
1 | PATH (IN side) | Green: Indicates that the IN side is linked up. |
2 | PATH (OUT side) | Green: Indicates that the OUT side is linked up. |
3 | PATH (IN side) | Green: Indicates that the IN side is linked up. |
4 | PATH (OUT side) | Green: Indicates that the OUT side is linked up. |
5 | POWER | Green: Indicates that the power is supplied to the ENC. |
6 | LOCATE |
Amber: A LED to specify the chassis location on the rear of the chassis. The LED can be lit/turned off by Maintenance Utility. |
7 | ALARM (REPLACE) | Red: Lights up when replacement of the ENC is possible. |
8 | Console port | Not in use |
Number | Item | Description |
1 | RDY2 |
Green: Normal operation Off: Erroneous operation or out of operation |
2 | RDY1 |
Green: Normal operation Off: Erroneous operation or out of operation |
3 | AC IN | Green: Indicates that AC input is normal. |
4 | ALM (REPLACE) | Red: Indicates when the power supply can be replaced. |
The media chassis for UBX contains eight 2U drive boxes in which 3.5-inch disk drives are installed. Each drive box consists of two ENCs and two power supplies with a built-in cooling fan.
The UBX holds 96 3.5-inch large form factor SAS HDD drives.
Number | Item | Description |
1 | POWER | Green: Indicates that the power supply is supplied to the storage system. |
2 | READY | Green: Indicates that the ENC is operating normally. |
3 | LOCATE |
Amber: Indicates the location of the chassis that detects a failure. The LED can be lit/turned off by Maintenance Utility. |
4 | ACT |
Green: Indicates that the HDD/SSD is powered on. Blinking Green: Indicates that the HDD/SSD is active. The blink speed may differ between HDDs and SSDs; however, this does not indicate a disk error or failure. |
5 | ALM |
Red: Indicates that the removal of the HDD/SSD is possible when the storage system is powered on. |
Number | Item | Description |
1 | POWER | Green: Indicates that the power is supplied to the ENC. |
2 | LOCATE |
Amber: A LED to specify the chassis location on the rear of the chassis. The LED can be lit/turned off by Maintenance Utility. |
3 | ALARM (REPLACE) | Red: Lights up when replacement of the ENC is possible. |
4 | PATH (IN side) | Green: Indicates that the IN side is linked up. |
5 | PATH (OUT side) | Green: Indicates that the OUT side is linked up. |
6 | Console port | Not in use |
Number | Item | Description |
1 | RDY2 |
Green: Normal operation Off: Erroneous operation or out of operation |
2 | RDY1 |
Green: Normal operation Off: Erroneous operation or out of operation |
3 | AC IN | Green: Indicates that AC input is normal. |
4 | ALM (REPLACE) | Red: Indicates when the power supply can be replaced. |
The media chassis for NBX contains four 2U drive boxes in which 2.5-inch NVMe drives are installed. Each drive box consists of two ENCs and two power supplies with a built-in cooling fan.
The NBX holds 96 2.5-inch NVMe SSD drives or 33 2.5-inch NVMe SCM drives.
Number | Item | Description |
1 | ALM |
Red: Indicates that the removal of the HDD/SSD is possible when the storage system is powered on. |
2 | ACT |
Green: Indicates that the HDD/SSD is powered on. Blinking Green: Indicates that the HDD/SSD is active. The blink speed may differ between HDDs and SSDs; however, this does not indicate a disk error or failure. |
3 | POWER | Green: Indicates that the power is supplied to the ENC. |
4 | READY | Green: Indicates that the ENC is operating normally. |
5 | LOCATE |
Amber: A LED to specify the chassis location on the rear of the chassis. The LED can be lit/turned off by Maintenance Utility. |
Number | Item | Description |
1 | POWER | Green: Indicates that the power is supplied to the ENC. |
2 | LOCATE |
Amber: A LED to specify the chassis location on the rear of the chassis. The LED can be lit/turned off by Maintenance Utility. |
3 | ALARM |
Red: Indicates that the removal of the HDD/SSD is possible when the storage system is powered on. |
4 | LINK | Blue: Indicates that PCIe between DKBN and ENC is linked up. |
Number | Item | Description |
1 | RDY2 |
Green: Normal operation Off: Erroneous operation or out of operation |
2 | RDY1 |
Green: Normal operation Off: Erroneous operation or out of operation |
3 | AC IN | Green: Indicates that AC input is normal. |
4 | ALM (REPLACE) | Red: Indicates when the power supply can be replaced. |
The media chassis for FBX contains four 2U drive boxes in which FMD drives are installed. Each drive box consists of two ENCs and two power supplies with a built-in cooling fan.
The FBX holds 48 Hitachi flash module drives (FMDs).
Number | Item | Description |
1 | ACT |
Green: Indicates FMD status. Blinking Green: Indicates that the FMD is active. The blink speed may differ between FMD LEDs; however, this does not indicate a disk error or failure. |
2 | ALM |
Red: Indicates that the removal of the FMD is possible when the storage system is powered on. |
3 | POWER | Green: Indicates that the power supply is supplied to the storage system. |
4 | READY | Green: Indicates that the ENC is operating normally. |
5 | LOCATE |
Amber: Indicates the location of the chassis that detects a failure. The LED can be lit/turned off by Maintenance Utility. |
Number | Item | Description |
1 | PATH (IN side) | Green: Indicates that the IN side is linked up. |
2 | PATH (OUT side) | Green: Indicates that the OUT side is linked up. |
3 | POWER | Green: Indicates that the power is supplied to the ENC. |
4 | LOCATE |
Amber: A LED to specify the chassis location on the rear of the chassis. The LED can be lit/turned off by Maintenance Utility. |
5 | ALARM (REPLACE) | Red: Lights up when replacement of the ENC is possible. |
Number | Item | Description |
1 | RDY 1 |
Green: Normal operation Off: Erroneous operation or out of operation |
2 | RDY 2 |
Green: Normal operation Off: Erroneous operation or out of operation |
3 | ALM REPLACE | Red: Indicates when the power supply can be replaced. |
Data storage drives
The following table lists and describes the data storage drives supported by the storage systems:
Group | Interface | Size (inch) | Transfer rate (Gbps) | Revolution Speed (min-1) or Flash Memory Technology | Capacity |
HDD | NL-SAS | 3.5 | 12 | 7,200 |
|
HDD | SAS | 2.5 | 12 | 10,000 |
|
SSD | SAS | 2.5 | 12 | MLC/TLC |
|
SSD | NVMe | 2.5 | 8 | TLC |
|
SCM | NVMe | 2.5 | 8 | SCM |
|
* Supported only on VSP 5200 and VSP 5600 with upgrade. |
Node interconnect switch
The node interconnect switch is a 1U switch chassis that contains interconnect and management components, including two interconnect switches, the service processor (SVP), an ethernet switch (SSVP), the operation panel, and two power supplies with a built-in cooling fan. The primary and secondary node interconnect switches must be installed in the storage system. For the secondary node interconnect switch, the SVP and SSVP are optional.
Identifier | Name | Description |
1 | Operation Panel | The operation panel shows system status with LED and controls power on and off of the storage system. |
2 | Backup Service Processor | A redundant SVP in case the main SVP fails. |
3 | Main Service Processor | The SVP provides status information about the storage system. |
4 | Ethernet Switch (SSVP) | The SSVP is a LAN hub that connects the SVP to each controller chassis, optional SSVP, and maintenance PC. |
Number | Item | Description |
1 | REMOTE MAINTENANCE ENABLE/DISABLE |
Used to enable or disable the remote maintenance of the storage system. ENABLE: Remote maintenance is allowed. DISABLE: Remote maintenance is not allowed. |
2 | PS SW ENABLE |
Move this switch to the ENABLE position to allow the PS ON/PS OFF switch to power on or power off the storage system. |
3 | PS ON/PS OFF |
To power on or off the storage system, move this switch while holding the PS SW ENABLE switch in the ENABLE position. |
4 | LOCATE |
Amber: The node interconnect switch needs maintenance. Off: Normal condition. |
5 | READY |
Green: I/O operation on the channel interface is possible. Off: Not ready. |
6 | ALARM |
Red: The storage system is down, or an MP block occurred. Off: Not in the alarm status. |
7 | MESSAGE |
Amber: The storage system is down, or an MP block occurred. The storage system detected a failure, and a SIM related to the failure was reported to the SVP. The LED continues to light until the maintenance personnel changes the SIM attribute to 'complete'. One blinking amber: SVP became faulty in a single SVP configuration. Two blinking amber: SVPs became faulty in a dual SVP configuration. If one of the two SVPs becomes faulty in a dual SVP configuration, this LED does not blink. |
8 | REMOTE MAINTENANCE PROCESSING |
Amber: Remote maintenance (ASSIST) is being operated. |
Number | Item | Description |
1 | REMOTE MAINTENANCE ENABLE/DISABLE |
Used to enable or disable the remote maintenance of the storage system. ENABLE: Remote maintenance is allowed. DISABLE: Remote maintenance is not allowed. |
2 | PS SW ENABLE |
Move this switch to the ENABLE position to allow the PS ON/PS OFF switch to power on or power off the storage system. |
3 | PS ON/PS OFF |
To power on or off the storage system, move this switch while holding the PS SW ENABLE switch in the ENABLE position. |
4 | LOCATE |
Amber: The node interconnect switch needs maintenance. Off: Normal condition. |
5 | READY |
Green: I/O operation on the channel interface is possible. Off: Not ready. |
6 | ALARM |
Red: The storage system is down, or an MP block occurred. Off: Not in the alarm status. |
7 | MESSAGE |
Amber: The storage system is down, or an MP block occurred. The storage system detected a failure, and a SIM related to the failure was reported to the SVP. The LED continues to light until the maintenance personnel changes the SIM attribute to 'complete'. One blinking amber: SVP became faulty in a single SVP configuration. Two blinking amber: SVPs became faulty in a dual SVP configuration. If one of the two SVPs becomes faulty in a dual SVP configuration, this LED does not blink. |
8 | REMOTE MAINTENANCE PROCESSING |
Amber: Remote maintenance (ASSIST) is being operated. |
9 | BS ON |
Amber: The auxiliary power supply in the storage system is powered on. |
10 | PS ON |
Green: The storage system is powered on. |
Interconnect switch
Number | Item | Description |
1 | PORT |
Red: The cable needs maintenance. Blinking Red: Error state (not linked state). Blinking Amber/Green): Error state (linked state). Green: Normal state (linked state). Off: Link down state. |
2 | ALARM | On: An error has occurred. |
3 | POWER | On: The ISW is powered on. |
Service processor
The service processor (SVP) is integrated into the controller and can only be used by authorized Hitachi Vantara personnel. The SVP enables the Hitachi Vantara representative to configure, maintain, service, and upgrade the storage system, and it also hosts the Hitachi Device Manager - Storage Navigator software. The SVP collects performance data for key hardware components and is connected with a service center for remote maintenance of the storage system. The SVP does not have access to any user data stored on the storage system.
If an optional second SVP is installed, the primary SVP is the active unit while the secondary SVP acts as a hot standby. If the primary SVP fails, the hot standby SVP takes over. In this way, the dual-SVP configuration eliminates single points of failure with the SVP.Number | Item | Description |
1 | SVP PS ON/OFF |
Used to power on or off the SVP power supply. Holding down this switch shuts down the power supply. |
2 | SVP POWER | Green: The SVP power supply is powered on. |
3 | SVP DCIN | Green: The SVP is receiving DC power. |
4 | SVP HDD | Green: The HDD in the SVP is being accessed. |
5 | SVP SHUT DOWN | Red: The SVP can be removed when the storage system is powered on. |
The table lists the technical specifications of the service processor.
Component |
Specifications |
Operating System |
Windows 10 IoT Enterprise 2019 LTSC |
CPU |
Intel® Core™ i3-6100U Processor |
Internal Memory |
8 GiB |
Disk drive |
256GiB (SATA3.0 mSATA) |
LAN |
On-Board 10Base-T/ 100Base-TX /1000Base-T x 2 Port |
USB |
Version 3.0 x 4 ports |
Because the SVP has no monitor or keyboard, a maintenance PC must be connected to the SVP to view the information collected by the SVP. |
Ethernet Switch (SSVP)
Number | Item | Description |
1 | SSVP RESET | Used to reset the hardware of the SSVP. |
2 | SVP RAS SET |
Used to set the RAS function of the SVP. Use this switch together with the SVP RAS switches #2, #3, and #4. |
3 | SVP RAS |
#1 : The SVP PS ON/OFF INH switch to suppress rebooting the SVP. #2, #3, and #4 : Used with the SVP RAS SET switch to set each function of the SVP. See table below for functions. |
4 | SSVP REP |
The SSVP is ready to be replaced for maintenance. This LED is lit by SVP control. |
5 | SVP STATUS | This LED is turned on or off by program control via a RAS driver. |
Setting | Operation | #2 | #3 | #4 | SVP RAS SET switch |
SVP IP ADDRESS DISPLAY | First time | ON | OFF | OFF | Press down |
HUB RESET | First time | ON | OFF | ON | Press down |
Disabling the setting, or canceling the first operation | First time | ON | ON | ON | Press down |
Second time | OFF | OFF | OFF | Press down | |
SVP PASSWORD/IP ADDRESS INITIALIZATION | First time | ON | ON | ON | Press down |
Second time | OFF | OFF | ON | Press down |
Interconnect switch power supply
Number | Item | Description |
1 | PORT | Blue: AC input is normal. |
2 | ALM/RDY |
Red: The ISWPS is ready to be replaced. Green: The ISWPS is operating normally. |
LED locations for high availability node
Number | Item | Description |
1 | POWER LED |
Green: Storage system is powered on. Amber: Storage system is receiving power. |
2 | READY LED |
Green: Normal operation. |
3 | WARNING LED |
Off: Normal operation. Amber: Component requires maintenance. Blink: Failure requires maintenance. Note: When System Option Mode 1097 is set to ON, the WARNING LED does not blink, even if the following failure service information messages (SIM) are issued: 452xxx, 462xxx, 3077xx, 4100xx, and 410100. LED might turn off during user maintenance. |
4 | ALARM LED |
Off: Normal operation. Red: Processor failure (system might be down). For assistance, contact customer support: https://support.hitachivantara.com/en_us/contact-us.html. |
5 | POWER ON/OFF (main switch) |
Powers the storage system. |