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3-6 MegaRAID 8480 Storage Adapter Characteristics
Copyright © 2006-2007 by LSI Corporation. All rights reserved.
3.3.2 Array Performance Features
Tabl e 3.4 shows the MegaRAID 8480 Storage Adapter array performance
features.
3.3.3 Fault Tolerance
Tabl e 3.5 shows the fault tolerance features of the Megaraid 8480
Storage Adapter.
Table 3.4 Array Performance Features
Specification MegaRAID 8480 RAID Controller
PCI Express Host Data Transfer
Rate
2.5 Gbits/s per lane
Drive Data Transfer Rate 3.0 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, 16, 32, 64, or 128 Kbyte
Maximum Number of Concurrent
Commands
255
Support for Multiple Initiators Ye s
Table 3.5 Fault Tolerance Features
Specification MegaRAID 8480 RAID Controller
Support for SMART
1
1. The Self Monitoring Analysis and Reporting Technology (SMART) detects
up to 70 percent of all predictable disk drive failures. In addition, SMART
monitors the internal performance of all motors, heads, and drive
electronics.
Ye s
Optional Battery Backup for
Cache Memory
LSIiTBBU02 battery backup. 4.8V/880mAH
battery pack; up to 72 hours of data retention
for 256 Mbytes
Drive Failure Detection Automatic
Drive Rebuild Using Hot Spares Automatic
Parity Generation and Checking Yes