Intel SRCSASLS4I - RAID Controller, Hardware User'S Manual

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Intel® RAID Controller SRCSASLS4I Hardware User’s Guide 3
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Advanced Array configuration and Management Utilities provides:
— Online Capacity Expansion (OCE) adds space to existing drive or new drive.
See Appendix A 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.
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Upgradeable Flash ROM interface.
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Allows for staggered spin up, hot-plug, and lower power consumption.
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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.
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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
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In-band and out-of-band SES2.
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Enclosure management support.
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Fault indicators per drive.
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Drive coercion (auto-resizing to match existing disks).
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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.
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Auto-resume on reboot of initialization or rebuild (must be enabled before virtual
disk creation).
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Smart initialization automatically checks consistency of virtual disks if there are five
or more disks in a RAID 5 array, which optimizes performance by enabling read-
modify-write mode. RAID 5 arrays of only three or four drives use Peer Read mode.
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Dirty cache LED plus error reporting for cache write to disk.
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Smart Technology predicts failures of drives and electronic components.
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Patrol Read checks drives and maps bad sectors.
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Commands are retried at least four times.
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Firmware provides best effort to recognize an error and recover if possible.
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Failures are logged from controller and drive firmware, and SMART monitor.
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Failures are logged in NVRAM, viewable from OS Event Log, Intel
®
RAID Web
Console 2; CIM, LEDs, and via alarm.