RAID specifications
Item
Specification
RAID level
*
SAS/SAS7.2K/Flash drive mounted: 1/5/6
RAID configuration
RAID1: 2D+2D, 4D+4D
RAID5: 3D+1P, 4D+1P, 6D+1P, 7D+1P
RAID6: 6D+2P, 12D+2P, 14D+2P
Maximum number of parity groups
480
Maximum volume size
3 TB (when using the LDEVs of other
Storage Systems: 4TB)
Maximum volumes/host groups and iSCSI
targets
2048
Maximum volumes/parity groups
2048
*
A storage system configured with RAID6, RAID 5, or RAID 1 provides redundancy and
enhances data reliability. However, there is still a possibility of losing data caused by
unforeseeable hardware or software failure. Users should always follow recommended
best practices and back up all data.
Internal logic specifications (CBL)
Item
Specification
Control memory
Flash memory: 32 MB
L3 cache memory: 4 MB
SDRAM: 1 GB
Data assurance method
Data bus: Parity
Cache memory: ECC (1 bit correction, 2 bit
detection)
Drive: Data assurance code
VSP G900 mechanical specifications
Appendix B: System specifications
Hitachi Virtual Storage Platform G900 Hardware Reference Guide
72