Intel RS25NB008 User Guide - Page 13

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 • In-band SES2. • Enclosure management support. • 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). Intel® RAID Controller RS25NB008 Hardware User's Guide 3