Hardware User's Guide

Intel® RAID Controller RS2WC040 Hardware User’s Guide 15
Fault Tolerance
Table 4. Fault Tolerance Features
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
Strip sizes 8, 16, 32, or 64 KB
Maximum concurrent
commands
1024-16
Support for multiple initiators Ye s
Performance Native command queuing
Flexibility • Drive migration
• RAID level migration
• Drive Roaming
• Online Capacity Expansion - without reboot
Background services • Rebuild
• Consistency Check
• Migration
• OCE
• Patrol Read
Cache options • Write-through
• Normal Read
• Direct I/O
Specification Intel
®
RAID Controller RS2WC040
Specification Intel
®
RAID Controller RS2WC040
Self Monitoring Analysis and
Reporting Technology (SMART)
support
• Detects up to 70% of predictable disk drive failures
• Monitors the internal performance of all motors,
heads, and drive electronics.
Drive Replacement • Auto detection of failure
• Hot plug
• Hot swap
Drive Rebuild Using Hot Spares • Automatic at fail
• Dedicated per array
• Global for any array
• Auto-resume of initialization or rebuild on reboot