User guide

LSI Corporation
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6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2012
Chapter 1: Overview
Overview
1.1.2 MegaRAID SATA+SAS Controllers with Support for Battery Backup Units and CacheVault
Modules
Some MegaRAID SATA+SAS RAID controllers can use optional cache products, which include a battery backup
unit (iBBU) or a CacheVault™ Flash Module (CVFM), to protect cached data even during the most catastrophic
system failures.
The following MegaRAID SATA+SAS RAID controllers can use a CacheVault Flash Module (CVFM) with a CacheVault
Power Module (CVPM) to protect cached data in case of a power failure or outage:
 MegaRAID SAS 9260CV-4i RAID controller
 MegaRAID SAS 9260CV-8i RAID controller
 MegaRAID SAS 9265CV-8i RAID controller
 MegaRAID SAS 9266-4i RAID controller
 MegaRAID SAS 9266-8i RAID controller
 MegaRAID SAS 9271-4i RAID controller
 MegaRAID SAS 9271-8i RAID controller
 MegaRAID SAS 9271-8iCC RAID controller
 MegaRAID SAS 9285CV-8i RAID controller
 MegaRAID SAS 9286-8e RAID controller
 MegaRAID SAS 9286CV-8e RAID controller
 MegaRAID SAS 9286CV-8eCC RAID controller
Refer to the Cache Backup Products for MegaRAID SAS RAID Controllers User Guide, the MegaRAID CacheVault Power
Module 02 Quick Installation Guide, the battery backup unit quick installation guides, and the RAID controller quick
installation guides on the MegaRAID Universal Software Suite CD for more information about the battery backup units
and the CacheVault modules.
1.1.3 SAS/SATA Standards and Communication Protocols
MegaRAID SATA+SAS controllers support the ANSI Serial Attached SCSI standard, version 2.0. In addition, the controller
supports the SATA III protocol defined by the Serial ATA specification, version 3.0. Supporting both the SAS interface
and the SATA interface, the SAS controller is a versatile controller that provides the backbone of both server and high-
end workstation environments.
Each port on your MegaRAID SAS RAID controller supports SAS devices, SATA devices, or both, by using the
following protocols:
 SAS Serial SCSI Protocol (SSP), which enables communication with other SAS devices
 SATA, which enables communication with other SATA devices
 Serial Management Protocol (SMP), which communicates topology management information directly with an
attached SAS expander device
 Serial Tunneling Protocol (STP), which enables communication with SATA devices through an attached expander