LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Hardware Manual page 46

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