IBM x3400 - System - 7975 User Manual

Contents

v Monitor operation of the RAID controllerv Configure a redundant array of independent disks (RAID) arrayv View or change the RAID configuration and associated devicesConsider the following information when using the RAID configuration programs toconfigure and manage arrays:v The integrated SATA controller (simple-swap SATA models) with integrated SATARAID (also known as HostRAID) supports RAID level-0 and level-1 when twodrives are installed. When the maximum four drives are installed, RAID level-10is also supported.Note: In addition, when the maximum four drives and the optional ServeRAID-8kController are installed in the simple-swap models, the server can also supportRAID level-5. See “Installing the ServeRAID-8k adapter” on page 57 for detailsabout installing and cabling the ServeRAID-8k Controller to enable RAID level-5support on simple-swap models.v The onboard SAS/SATA controller (hot-swap SAS and hot-swap SATA models)supports RAID level-0 and level-1 when two drives and the ServeRAID 8k-lcontroller are installed. When four drives are installed, RAID level-10 is alsosupported. When you upgrade to the maximum eight drives and the optionalServeRAID-8k controller is installed, RAID levels 1e, 5, and 6 also are supported.v You can order an optional IBM ServeRAID-MR10is VAULT SAS/SATA Controllerthat supports RAID levels 0, 1, 5, 6, 10, 50, and 60. You can install theServeRAID-MR10is SAS/SATA controller only in server models with eight 3.5 inchhot-swap hard disk drives installed. For instructions on how to install theServeRAID-MR10is SAS/SATA controller, see “Installing the optional IBMServeRAID-MR10is VAULT SAS/SATA Controller” on page 60 for instructions onhow to install this adapter.Note: Note: The onboard RAID controller will be disabled by BIOS when theServeRAID-MR10is SAS/SATA controller is installed in the server.v Hard disk drive capacities affect how you create arrays. The drives in an arraycan have different capacities, but the RAID controller treats them as if they allhave the capacity of the smallest hard disk drive.v To help ensure signal quality, do not mix drives with different speeds and datarates.v To update the firmware and BIOS code for an optional ServeRAID controller, youmust use the IBM ServeRAID Support CD that comes with the ServeRAIDoption.v If you install a different type of RAID controller in the server, use the method thatis described in the instructions that come with the controller to view or changesettings for attached devices.Configuring hot-swap SAS, hot-swap SATA, or Simple-swap SATA(some models) RAIDNote: RAID options are not supported on the SCO 6.0 and UnixWare 7.14operating systems.Use the IBM ServeRAID Configuration Utility program to configure and manageredundant array of independent disks (RAID) on the following server models:v Hot-swap SASv Hot-swap SATAChapter 3. Configuring the server 85