Consider the following information when using the RAID configuration programs to
configure and manage arrays:
v The integrated SATA controller (simple-swap SATA models) with integrated SATA
RAID (also known as HostRAID) supports RAID level-0 and level-1 when two
drives are installed. When the maximum four drives are installed, RAID level-10
is also supported.
Note: In addition, when the maximum four drives and the optional ServeRAID-8k
SAS Controller are installed in the simple-swap SATA models, the server
can also support RAID level-5. See the User’s Guide for details about
installing and cabling the ServeRAID-8k Controller to enable RAID level-5
support on simple-swap SATA 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-l
controller are installed. When four drives are installed, RAID level-10 is also
supported. When you upgrade to the maximum eight drives and the optional
ServeRAID-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 Controller
that supports RAID levels 0, 1, 5, 6, 10, 50, and 60. You can install the
ServeRAID-MR10is SAS/SATA controller only in server models with eight 3.5 inch
hot-swap hard disk drives installed. PCI slot 2 is the dedicated slot for the
ServeRAID-MR10is controller.
Note: Note: The onboard RAID controller will be disabled by BIOS when the
ServeRAID-MR10is SAS/SATA controller is installed in the server.
v Hard disk drive capacities affect how you create arrays. The drives in an array
can have different capacities, but the RAID controller treats them as if they all
have the capacity of the smallest hard disk drive.
v To help ensure signal quality, do not mix drives with different speeds and data
rates.
v To update the firmware and BIOS code for an optional ServeRAID controller, you
must use the IBM ServeRAID Support CD that comes with the ServeRAID
option.
v If you install a different type of RAID controller in the server, use the method that
is described in the instructions that come with the controller to view or change
settings for attached devices.
Configuring hot-swap SAS, hot-swap SATA, or simple-swap SATA
(some models) RAID
Note: RAID options are not supported on the SCO 6.0 and UnixWare 7.14
operating systems.
Use the IBM ServeRAID Configuration Utility program to configure and manage
redundant array of independent disks (RAID) on the following server models:
v Hot-swap SAS
v Hot-swap SATA
v Simple-swap SATA models with the optional ServeRAID-8k Controller installed
This
utility is part of the BIOS code. The IBM ServeRAID Configuration Utility
program adds RAID functionality to the onboard SAS/SATA controller. The onboard
SAS/SATA controller comes enabled by default.
Chapter 4. Configuring the server 47
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