IBM ServeRAID M5025, User Manual

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Technical Specifications 3-5
3.3.2 Array Performance Features
Table 3.4 shows the array performance features for the ServeRAID
M5025 SAS/SATA controller.
3.3.3 Fault Tolerance
Table 3.5 shows the fault tolerance features of the ServeRAID M5025
SAS/SATA controller.
SAS Bus Speed 6 Gbits/s
SAS Ports Two SAS connectors with four SAS ports each
Cache Configuration Integrated 512 Mbyte Double Data Rate II (DDR2) ECC
800 MHz SDRAM
Size of Flash ROM
for Firmware
8 Mbytes
Nonvolatile Random
Access Memory
(NVRAM)
32 Kbytes for storing RAID configuration
Table 3.3 ServeRAID M5025 SAS/SATA Controller Specifications
Specification ServeRAID M5025 SAS/SATA Controller
Table 3.4 Array Performance Features
Specification ServeRAID M5025 SAS/SATA Controller
PCI Express Host Data Transfer
Rate
5 Gbits/s per lane
Drive Data Transfer Rate 6.0 Gbits/s per lane
Maximum Scatter/Gathers 26 elements
Maximum Size of I/O Requests 6.4 Mbytes in 64 Kbyte stripes
Maximum Queue Tags per Drive As many as the drive can accept
Stripe Sizes 8 Kbytes, 16 Kbytes, 32 Kbytes, 64 Kbytes,
128 Kbytes, 256 Kbytes, 512 Kbytes, or
1 Mbyte
Maximum Number of Concurrent
Commands
255
Support for Multiple Initiators Yes