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MegaRAID SAS Software User Guide Chapter 1: Overview
| SAS Technology
Chapter 1
This guide describes how to use the MegaRAID® Storage Manager™ software,
WebBIOS™ configuration utility, and MegaRAID command line interface (CLI). This
chapter documents the SAS technology, Serial ATA (SATA) technology, CacheCade™ –
SSD Caching software, Dimmer Switch™, EUFI 2.0, configuration scenarios, and drive
types.
NOTE: This guide does not include the latest CacheCade software and Enterprise Key
Management System (EKMS) feature images.
1.1 SAS Technology The MegaRAID 6Gb/s SAS RAID controllers are high-performance intelligent PCI
Express-to-SCSI/Serial ATA II controllers with RAID control capabilities. MegaRAID 6Gb/s
SAS RAID controllers provide reliability, high performance, and fault-tolerant disk
subsystem management. They are an ideal RAID solution for the internal storage of
workgroup, departmental, and enterprise systems. MegaRAID 6Gb/s SAS RAID
controllers offer a cost-effective way to implement RAID in a server.
SAS technology brings a wealth of options and flexibility with the use of SAS devices,
Serial ATA (SATA) II devices, and CacheCade – SSD Caching software devices within the
same storage infrastructure. These devices bring individual characteristics that make
each of these more suitable choice depending on your storage needs. MegaRAID gives
you the flexibility to combine these two similar technologies on the same controller,
within the same enclosure, and in the same virtual drive.
NOTE: We recommend that you carefully assess any decision to combine SAS drives
and SATA drives within the same virtual drives. Although you can mix drives, we strongly
discourage this practice; this applies to both HDDs and CacheCade – SSD Caching
software.
Overview
This chapter provides an overview of this guide, which documents the utilities used to
configure, monitor, and maintain MegaRAID® Serial-attached SCSI (SAS) RAID
controllers with RAID control capabilities and the storage-related devices connected to
them.
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