LSI 25083 Manual De Usuario
3-16
MegaRAID SAS RAID Controller Characteristics
Copyright © 2009 by LSI Corporation. All rights reserved.
3.3.2
Array Performance Features
shows the array performance features for the MegaRAID 6Gb/s
SAS RAID controllers.
PCI Express bus
data transfer rate
data transfer rate
• Up to 5 Gb/s per lane
• x8 lane width
• x8 lane width
Serial port
4-pin RS232-compatible connector (for manufacturing
use only)
use only)
SAS controller
• LSISAS2108 Single SAS controller
• LSISAS2008 PCI Express-SAS/SATA I/O Processor
• LSISAS2008 PCI Express-SAS/SATA I/O Processor
chip
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
cache configuration:
• 512 MB – 72b arrangement (5) 64Mx16, Double Data
Rate II (DDR2) @ 800 MHz battery-backed module
Size of flash ROM
for firmware
for firmware
8 Mbytes
Nonvolatile random
access memory
(NVRAM)
access memory
(NVRAM)
32 Kbytes for storing RAID configurations
Table 3.7
RAID Controller Specifications (Cont.)
Specification
MegaRAID SAS 9240, SAS 9260, SAS 9261, and SAS
9280 RAID Controllers
9280 RAID Controllers
Table 3.8
Array Performance Features
Specification
MegaRAID SAS 9240, SAS 9260, SAS
9261, and SAS 9280 RAID Controllers
9261, 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