Array Performance Features - LSI MegaRAID SAS 9240-4i User Manual

3.3.2

Array Performance Features

3-16
Table 3.7 RAID Controller Specifications (Cont.)
Specification
PCI Express bus
data transfer rate
Serial port
SAS controller
SAS bus speed
SAS ports
Cache configuration The RAID controllers support the following battery-backed
Size of flash ROM
for firmware
Nonvolatile random
access memory
(NVRAM)
Table 3.8 shows the array performance features for the MegaRAID 6Gb/s
SAS RAID controllers.
Table 3.8 Array Performance Features
Specification
PCI Express host data transfer rate 5Gb/s per lane
Drive data transfer rate
Maximum scatter/gather I/O
Maximum size of I/O requests
MegaRAID SAS RAID Controller Characteristics
Copyright © 2009 by LSI Corporation. All rights reserved.
MegaRAID SAS 9240, SAS 9260, SAS 9261, and SAS
9280 RAID Controllers
• Up to 5 Gb/s per lane
• x8 lane width
4-pin RS232-compatible connector (for manufacturing
use only)
• LSISAS2108 Single SAS controller
• LSISAS2008 PCI Express-SAS/SATA I/O Processor
chip
6Gb/s
SAS connectors with four SAS ports each
cache configuration:
• 512 MB – 72b arrangement (5) 64Mx16, Double Data
Rate II (DDR2) @ 800 MHz battery-backed module
8 Mbytes
32 Kbytes for storing RAID configurations
MegaRAID SAS 9240, SAS 9260, SAS
9261, and SAS 9280 RAID Controllers
6Gb/s per lane
80 elements
6.4 Mbytes in 64-Kbyte stripes