Hitachi Virtual Storage Platform G800 hardware overview
The Hitachi Virtual Storage Platform G800 is a modular, rack-mountable storage system, with various fixed storage capacity configurations of FMD DC2 flash storage devices. To deliver consistent low latency host response times and highest IOP performance across all host connection ports, no hard-disk drives are included.
The storage systems contain dual controllers for communicating with a data host. Each controller contains its own processor, dual in-line cache memory modules (DIMMs), cache flash memory (CFM), battery, and fans. Each controller also has an Ethernet connection for out-of-band management. If the data path through one controller fails, all hard drives remain available to data hosts using a redundant data path through the other controller. The storage system controllers are replaceable.
The storage system can be equipped with network-attached storage (NAS) modules. The NAS modules provide file access through CIFS and NFS protocols and block access by using iSCSI protocols, in addition to the block access provided directly by iSCSI and Fibre Channel I/O modules.
All storage system models allow defective drives to be replaced without the interruption of data availability to host computers. A hot spare drive can be configured to replace a failed drive automatically, securing the fault-tolerant integrity of the logical drive. Self-contained, hardware-based RAID logical drives provide maximum performance in compact external enclosures.
Key components are implemented with a redundant configuration, so that the storage system can remain operational in the unlikely event that a component should fail. Adding and replacing components, along with firmware upgrades, can be conducted while the storage system is active.
Block configuration
A block-level storage provides the ability to access and provision raw storage volumes using protocols such as Fibre Channel and iSCSI.
A block configuration consists of the following:
- Two controllers
- One or more drive trays
- One 1U block service processor server (SVP)
Unified configuration
A unified configuration includes NAS modules that support file system protocols such as CIFS and NFS operate across a block-level setup using iSCSI or FC connections.
- Two controllers
- Two NAS modules for file operations and storage
- One or more drive trays for block-level storage
- One 1U block service processor server (SVP)
VSP G800 model
The VSP G800 is a highly reliable storage system that offers high storage capacity with full redundancy to better protect data and manage storage operations.
The storage system consists of a 4U enclosure that includes two controllers, two optional NAS modules, but no disk drives. Drives are supported using drive trays connected to the controllers. The CBLH can be expanded by mounting a host port expansion chassis.
The storage system supports 512 GB of high-speed memory cache, arranged as 256 GB per controller. Storage system interfaces are listed in the following table. The maximum number of ports can be increased by connecting a host port expansion chassis.
|
Front end module |
Without host port expansion chassis | With host port expansion chassis | ||
| With HDD | Without HDD | With HDD | Without HDD | |
| 10-Gbps iSCSI ports per system | 24 | 32 | 32 | 40 |
| 8-Gbps Fibre Channel (4-port) per system | 48 | 64 | 64 | 80 |
| 16-Gbps Fibre Channel (2-port) per system | 24 | 32 | 32 | 40 |
| 32/16-Gbps Fibre Channel (4-port) per system | 48 | 64 | 64 | 80 |
|
Controller |
Controller chassis |
Controller model |
Height |
Number of drives supported |
Supported drive type |
| CBLH | DW800-CBL | DW-F800-CTLH | 4U (175.0 mm) | N/A | N/A |
|
Controller |
Model number |
Description |
|
NAS |
DW-F800-NAS |
Optional component for block and file storage configuration |
|
Drive tray |
Drive tray model name |
Support drive type |
Numbers of drives supported |
Height |
| DBS |
|
2.5-inch SFF | 24 | 2U (86.2 mm) |
| DBL |
|
3.5-inch LFF | 12 | 2U (86.2 mm) |
| DBF |
|
5.25-inch FMD | 12 | 2U (86.2 mm) |
| DBF |
|
5.25-inch FMD | 40 + 2 spares | 2U (86.2 mm) |
| DB60 |
|
3.5-inch LFF | 60 | 4U (174.3 mm) |
Features
The features described in the table are included with VSP G800
|
Feature |
Value |
|
Maximum cache memory supported |
512 GB |
|
Maximum number of spare drives |
64 |
|
Maximum number of RAID groups |
480 |
|
Maximum volume size |
3 TB (4 TB when using the LDEVs of other Storage Systems) |
|
Maximum number of volumes per host groups |
2,048 |
|
Maximum number of volumes per RAID group |
2,048 |
|
Maximum number of DP pool volumes |
4,096 |
|
Maximum number of DP pools |
64 |
|
Maximum number of iSCSI hosts connected through a network switch |
255 |
|
Maximum number of Fibre Channel devices connected through a Fibre Channel switch |
255 |
Scalability
All storage systems offer pay-as-you-grow scalability by allowing you to hot-add drives as you need them.
Examples of supported VSP G800 configurations
|
Drive tray |
Maximum number of drive trays supported |
Maximum number of drives supported |
| SFF drive tray | 48 | 1152 HDDs or SSDs |
| LFF drive tray | 48 | 576 HDDs or SSDs |
| FMD drive tray | 48 | 576 HAF flash module drives |
| Dense intermix drive tray | 24 | 1440 drives |
Maximum number of mounted drive trays
The following table lists the maximum number of mountable drive trays and mountable drives for each drive type.
|
VSP G800 Controller |
Drive trays |
Maximum number of trays |
Maximum number of drives |
|
CBLH |
SFF |
48 |
1152 HDDs or SSDs |
|
LFF |
48 |
576 HDDs or SSDs |
|
|
FMD |
48 |
576 FMDs (HAF) |
|
|
FMD |
4 |
40 FMDs + 2 spares (DC2) |
|
|
48 FMDs |
|||
|
Dense intermix drive tray |
24 |
1440 HDDs or SSDs |