Intel® RAID Controller RS25DB080 Hardware User’s Guide 3
Usability
• The card ships with both a standard and a low-profile bracket.
• The card ships with a 1GB memory board which is already installed onto the RAID
controller baseboard as the RAID cache.
• Small, thin cabling with serial point-to-point 6.0 Gbps data transfer rates.
• Support for non-disk devices and mixed capacity drives.
• Support for intelligent XOR RAID levels 0, 1, 5, 6, 10, 50, and 60.
• Dedicated or global hot spare with auto rebuild if an array drive fails.
• User defined stripe size per drive: 8, 16, 32, 64, 128, 256, 512, or 1024 KB.
• Advanced array configuration and management utilities provide:
— Online Capacity Expansion (OCE) adds space to existing drive or new drive.
See
Appendix A: Drive Roaming and Drive Migration Install for limitations on
OCE and RAID migration.
— Online RAID level migration (upgrade of RAID mode may require OCE)
— Drive migration
— Drive roaming
— No reboot necessary after expansion
— Load Balancing
• Upgradeable Flash ROM interface.
• Allows for staggered spin-up, hot-plug, and lower power consumption.
• User specified rebuild rate (percent of system resources to use from 0-100%).
Caution: Exceeding 50% rate may cause operating system errors due to waiting for
controller access.
• Background operating mode can be set for Rebuilds, Consistency Checks,
Initialization (auto restarting Consistency Check on redundant volumes), Migration,
OCE, and Patrol Read.
Redundancy and Error Handling
• SES2 enclosure management support
• SGPIO enclosure management support
• Fault indicators per drive.
• Drive coercion (auto-resizing to match existing disks).
• Auto-detection of failed drives with transparent rebuild. There must be disk activity
(I/O to the drive) for a missing drive to be marked as failed.
• Auto-resume of initialization or rebuild on reboot (the Auto Rebuild feature must be
enabled before virtual disk creation).
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