Appendix A: Specifications
Compatibility
Host Interface
SAS
Host Channels
Eight SSP PHYs configured as two SCSI-like
channels
Drive Interface
SAS or SATA-II
Drive Channels
4 through expanders to disk drives and
expansion points
Caching Mode
Write-through or write-back
Cache Memory
Default 512MB, up to 2GB DDR RAM DIMM
modules with ECC
Number of LUNs
Up to 64 LUNs
Multiple Target
IDs/Host Channel
No
Aliases for Target
IDs
No
Firmware on Flash
Memory
Yes
Drive Hot-swap
Yes; with transparent reset of non-responsive
drives
Controller Hot-
swap
Yes for S12S-R1032
Architectural Specifications
CPU
PowerPC GL series RISC processor
DIMM Slot
One 184-pin DDR DIMM socket
ASIC
Infortrend 64-bit chipset (ASIC400)
Flash ROM
64Mbit (8MB)
NVRAM
128KB with RTC (with embedded RAIDWatch
utility)
Hardware XOR
Yes
Real-time Clock
For event messages with time record and task
scheduling
A.3 Power
Supply
Specifications
Specifications
Nominal Power
530W with active PFC
DC Output
12.0V: 43A (Max.)
5.0V: 25A (Max.)
Input Frequency
47 to 63Hz
Input Voltage
100-240VAC @ 10-5A with PFC
Power Factor
Correction
Yes
Hold-up Time
At least 20ms at 115/230VAC full load after a loss
Power Supply
Specifications
A-3