Serveraid-M Software User Guide

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® ServeRAID-M Software User Guide June 2014 Part Number: 00AH215 ServeRAID M Software User Guide June 2014 Eleventh Edition (June 2014) © Copyright IBM Corporation 2007, 2013. US Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. ServeRAID M Software User Guide Table of Contents June 2014 Table of Contents Chapter 1: Overview . 14 1.1 SAS Technology. .14 1.2 Serial-attached SCSI Device Interface . .14 1.3 Serial ATA Features. .15 1.4 Solid State Drive Features . .15 1.5 Solid State Drive Guard. .16 1.6 Integrated MegaRAID Mode and MegaRAID Mode . .16 1.7 Feature on Demand (FoD) Upgrades. .17 1.8 Feature on Demand: iMR RAID 5 + SafeStore Disk Encryption . .17 1.8.1 Feature on Demand: ServeRAID RAID 6/60 Upgrade . 18 1.9 Feature on Demand: FastPath Upgrade . .19 1.10 Feature on Demand: CacheCade 2 Upgrade. .19 1.11 UEFI 2.0 Support . .20 1.12 Configuration Scenarios. .20 1.12.1 Valid Drive Mix Configurations . 21 Chapter 2: Introduction to RAID. 22 2.1 RAID Description . .22 2.2 RAID Benefits . .22 2.3 RAID Functions. .22 2.4 Components and Features . .22 2.5 Physical Array . .23 2.6 Virtual Drive . .23 2.7 RAID Drive Group . .23 2.8 Fault Tolerance . .23 2.8.1 Multipathing . 24 2.8.2 Consistency Check. 24 2.8.3 Copyback . 24 2.8.4 Background Initialization . 25 2.8.5 Patrol Read . 25 2.8.6 Disk Striping. 25 2.8.7 Disk Mirroring . 26 2.8.8 Parity. 27 2.8.9 Disk Spanning . ..

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