Lenovo ThinkServer RD330 MegaRAID SAS Software User Guide - Page 13
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MegaRAID SAS Software User Guide Chapter 1: Overview | SAS Technology Chapter 1 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. 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. Page 13