Raid Controller Features - Silicon Graphics InfiniteStorage 350 Quick Start Manual

1: SGI InfiniteStorage 350 Quick Start Instructions

RAID Controller Features

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The RAID controllers in the InfiniteStorage 350 have the following features:
• 48-drive maximum configuration
• Five RAID levels (0, 0+1, 1, 3, and 5)
• 4 Gbit/s front end (FE) and 4 Gbit/s back end (BE)
Note: The back end can also support 2 Gbit/s, the setting of whether to use 2 or 4 is based on
the selector switch located on the front of the controller and expansion enclosures.
• Switched connection to disk (SBOD)
• Immediate LUN availability (ILA)
• Transparent disk drive rebuilds
• Variable stripe size per controller (16K, 32K, 64K, 128K, 256K and 512K)
• Mirrored cache
• Drive roaming during power off
• Cache coherency
• Transparent failover and failback
• Automatic error recovery
• Write through, write back, or read ahead support
• Automatic detection of failed drives
• Automatic drive rebuilds, using a "hot spare" drive
• Hot-swappable drives
• SAN mapping server to LUN mapping
• Automatic firmware flashing: In a dual controller configuration, the firmware of the
replacement controller is automatically flashed to match the firmware of the surviving
controller.
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