Megaraid SAS Software User's Guide
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MegaRaid® SAS Software User Guide 80-00156-01 Rev. I June 2010 80- 00156- 01I Revision History Version and Date Description of Changes 80-00156-01 Rev. I, June 2010 Updated the document with changes to the software utilities. Added Chapter 11 for the MegaRAID Advanced Software features. 80-00156-01 Rev. H, July 2009 Documented the Full Disk Encryption (FDE) feature. 80-00156-01 Rev. G, June 2009 Updated the MegaRAID Storage Manager chapters. 80-00156-01 Rev. F, March 2009 Updated the WebBIOS Configuration Utility, MegaRAID Storage Manager, and MegaCLI chapters. 80-00156-01 Rev. E, December 2008 Added the overview chapter. Updated the WebBIOS Configuration Utility, MegaRAID Storage Manager, and MegaCLI chapters. 80-00156-01 Rev. D, April 2008 Updated the RAID overview section. Updated the WebBIOS Configuration Utility and the MegaRAID Storage Manager. Updated the MegaCLI commands. 80-00156-01 Rev. C, July 2007 Updated operating system support for MegaCLI. Version 2. 80-00156-01 Rev. B, June 2007 Updated the WebBIOS Configuration Utility and the MegaRAID Storage Manager. Updated the MegaCLI commands. Added the RAID Version 2.0 introduction chapter. 80-00156-01 Rev. A, August 2006 Corrected the procedure for creating RAID 10 and RAID 50 drive groups in the WebBIOS Configuration Utility. Version 1.1 DB15-000339-00, December 2005 Initial release of this document. Version 1.0 LSI and the LSI logo are trademarks or registered trademarks of LSI Corporation or its subsidiaries. All other brand and product names may be trademarks of their respective companies. This preliminary document describes a preproduction product and contains information that may change substantially for any final commercial release of the product. LSI Corporation makes no express or implied representation or warranty as to the accuracy, quality, or completeness of information contained in this document, and neither the release of this document nor any information included in it obligates LSI Corporation to make a commercial release of the product. LSI Corporation reserves the right to make changes to the product(s) or information disclosed herein at any time without notice. LSI Corporation does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by LSI Corporation; nor does the purchase, lease, or use of a product or service from LSI Corporation convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of LSI Corporation or of third parties. This document contains proprietary information of LSI Corporation. The information contained herein is not to be used by or disclosed to third parties without the express written permission of LSI Corporation. This document contains proprietary information of LSI Corporation. The information contained herein is not to be used by or disclosed to third parties without the express written permission of LSI Corporation. Corporate Headquarters Email Website Milpitas, CA [email protected] www.lsi.com 800-372-2447 Document Number: 80-00156-01 Rev. I Copyright © 2010 LSI Corporation All Rights Reserved MegaRaid SAS Software User Guide Table of Contents Table of Contents Chapter 1: Overview . .11 1.1 SAS Technology . .11 1.2 Serial-attached SCSI Device Interface . .12 1.3 Serial ATA II Features . .12 1.4 Solid State Drive Features . .13 1.4.1 Solid State Drive Guard . .13 1.5 Dimmer Switch Feature . .13 1.6 UEFI 2.0 Support . .14 1.7 Configuration Scenarios . .14 1.7.1 Valid Drive Mix Configurations with HDDs and SSDs . .15 1.8 Technical Support . .16 Chapter 2: Introduction to RAID . .17 2.1 RAID Description . .17 2.2 RAID Benefits . .17 2.3 RAID Functions . .17 2.4 Components and Features . .17 2.4.1 Drive Group . .18 2.4.2 Virtual Drive . .18 2.4.3 Fault Tolerance . .18 2.4.4 Consistency Check . .19 2.4.5 Copyback . .19 2.4.6 Background Initialization . .20 2.4.7 Patrol Read . .21 2.4.8 Disk Striping . .21 2.4.9 Disk Mirroring . .21 2.4.10 Parity . .22 2.4.11 Disk Spanning . .23 2.4.12 Hot Spares . .24 2.4.13 Disk Rebuilds . .25 2.4.14 Rebuild Rate . ..