Table 3.7 | RAID Controller Specifications (Cont.) | |
|
|
|
|
| MegaRAID SAS 9240, SAS 9260, SAS 9261, and SAS |
Specification |
| 9280 RAID Controllers |
|
| |
PCI Express bus | • Up to 5 Gb/s per lane | |
data transfer rate | • x8 lane width | |
|
|
|
Serial port |
| |
|
| use only) |
|
| |
SAS controller | • LSISAS2108 Single SAS controller | |
|
| • LSISAS2008 PCI |
|
| chip |
|
| |
SAS bus speed | 6Gb/s | |
|
|
|
SAS ports |
| SAS connectors with four SAS ports each |
|
| |
Cache configuration | The RAID controllers support the following | |
|
| cache configuration: |
|
| • 512 MB – 72b arrangement (5) 64Mx16, Double Data |
|
| Rate II (DDR2) @ 800 MHz |
|
| |
Size of flash ROM | 8 Mbytes | |
for firmware |
|
|
|
| |
Nonvolatile random | 32 Kbytes for storing RAID configurations | |
access memory |
| |
(NVRAM) |
|
|
|
|
|
3.3.2Array Performance Features
Table 3.8 shows the array performance features for the MegaRAID 6Gb/s SAS RAID controllers.
Table 3.8 | Array Performance Features | |
|
|
|
|
| MegaRAID SAS 9240, SAS 9260, SAS |
Specification |
| 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 | |
|
|
|
MegaRAID SAS RAID Controller Characteristics | |
| Copyright © 2009 by LSI Corporation. All rights reserved. |