User`s guide

Technical Specifications 3-9
Copyright © 2009 by LSI Corporation. All rights reserved.
3.3.2 Array Performance Features
Table 3. 5 shows the array performance features for the MegaRAID 6Gb/s
SAS RAID controllers.
Array interface to the
host
PCI Express Rev. 2.0
PCI Express bus
data transfer rate
• Up to 5 Gb/s per lane
• x8 lane width
Serial port 4-pin RS232-compatible connector (for manufacturing
use only)
SAS controller One LSISAS2108 Single SAS controller
SAS bus speed 6Gb/s
SAS ports SAS connectors with four SAS ports each
Cache configuration The RAID controllers support the following battery-backed
cache configuration:
• 512 MB – 72b arrangement (5) 64Mx16, Double Data
Rate II (DDR2) @ 800 MHz battery-backed module
Size of flash ROM
for firmware
8 Mbytes
Nonvolatile random
access memory
(NVRAM)
32 Kbytes for storing RAID configurations
Table 3.4 RAID Controller Specifications (Cont.)
Specification MegaRAID SAS 9260 and SAS 9280 RAID Controllers
Table 3.5 Array Performance Features
Specification
MegaRAID SAS 9260 and SAS 9280
RAID Controllers
PCI Express host data transfer rate 5Gb/s per lane
Drive data transfer rate 6Gb/s per lane
Maximum scatter/gather I/O 80 elements
Maximum size of I/O requests 6.4 Mbytes in 64-Kbyte stripes