LSI MegaRAID SCSI 320-2 RAID Controller Series 518 - Manual (Page 46)

4-2 Features
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
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SCSI data transfers up to 320 Mbytes/s
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Synchronous operation on a wide LVD SCSI bus
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Up to 15 LVD SCSI devices on each of the Wide buses
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Up to 256 Mbytes of 3.3 V PC100 (or faster) SDRAM cache memory
in one single-sided or double-sided DIMM socket (Cache memory is
used for read and write-back caching and for RAID 5 parity
generation.)
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Non-volatile random access memory (NVRAM) storage for RAID
configuration data
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Audible alarm
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Direct memory access (DMA) chaining support
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Separate DRAM bus
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Support for differential or single-ended SCSI with active termination
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Up to 12 MegaRAID 320-2 cards per system
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Support for up to 15 SCSI devices per channel
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Support for RAID levels 0, 1, 5, 10, and 50
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Support for scatter/gather and tagged command queuing
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Ability to multithread up to 256 commands simultaneously
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Support for multiple rebuilds and consistency checks with
transparent user-definable priority setting
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Support for variable stripe sizes for all logical drives
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Automatic detection of failed drives
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Automatic and transparent rebuild of hot spare drives
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Hot swap of new drives without taking the system down
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Optional battery backup for up to 72 hours of data retention
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Server clustering support
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Optional firmware provides multi-initiator support
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Server failover
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Software drivers for major operating systems