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Appendix A: Subsystem Specifications
Specifications A-3
A.2. Controller Functional Specifications
Specification
RAID Levels
0, 1(0 + 1), 3, 5, 6, 10, 30, 50, 60, JBOD, and non-
RAID disk spanning
Host O/S
Compatibility
Host O/S independent; supports all major platforms
Host Interface Two 4Gbps Fibre channels via four SFP ports
Host Channels Two pre-configured 4Gbps host channels
Drive Interface
Supports up to 24 dedicated 3Gbps SATA-II
channels
Drive Channels
All drive channels are pre-configured, routed through
a back-end PCB and cannot be changed
Cache Mode Write-through and write-back
Cache Memory
Pre-installed 512MB DDR RAM DIMM, supports up
to 2GB DDR RAM with ECC, registered
Number of LUNs
Up to 32 per ID; up to a total of 1024, configurable
depending on the size of installed DDR memory
RCC channels
6 dedicated SATA channels for cross-controller
synchronized cache communications
Multiple Target
IDs/Host Channel
Yes
Aliases for Target
IDs
Yes
Firmware on
Flash Memory
Yes
Drive Hot-
swapping
Yes
Controller Hot-
swapping
Yes (redundant controller models only)
A.3. Drive Tray Specifications
Specification
Height 28mm (1.1inch)
Width 110mm (4.3 inches)
Depth 218.92mm (8.6 inches)
Bezel lock Yes