LSI 25083 User Manual
1-10
Overview
Copyright © 2009 by LSI Corporation. All rights reserved.
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Two internal connectors for the SAS 9240-8i, SAS 9260-8i, SAS
9261-8i, and SAS 9260DE-8i RAID controllers
9261-8i, and SAS 9260DE-8i RAID controllers
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One external connector for the SAS 9280-4i/4e RAID controller
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Two external connectors for the SAS 9280-8e RAID controller and
the SAS 9280DE-8e RAID controller
the SAS 9280DE-8e RAID controller
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Support for RAID levels 0, 1, 5, 6, 00, 10, 50, and 60
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Advanced array configuration and management utilities
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Support for global hot spares and dedicated hot spares
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Support for user-defined stripe sizes: 8, 16, 32, 64, 128, 256, 512,
or 1024 KB
or 1024 KB
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Advanced array configuration and management utilities offer:
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Online capacity expansion to add space to an existing drive or
new drive
new drive
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Online RAID level migration
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Drive migration
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Drive roaming
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No reboot necessary after expansion
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Load balancing
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Media scan
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User-specified rebuild rate (specifying the percentage of system
resources to use from 0%-100%)
resources to use from 0%-100%)
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32-Kbyte nonvolatile random access memory (NVRAM) for storing
RAID system configuration information; the MegaRAID SAS firmware
is stored in flash ROM for easy upgrade.
RAID system configuration information; the MegaRAID SAS firmware
is stored in flash ROM for easy upgrade.
1.6.1
SAS Features
The following list describes the SAS features of the RAID controllers:
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Provides four fully independent PHYs or eight fully independent
PHYs, depending on the controller
PHYs, depending on the controller
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Supports 6Gb/s and 3Gb/s SAS data transfers per PHY
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Supports SMP to communicate topology management information
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Supports SSP to enable communication with other SAS devices