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Configuring RAID for machine types 4266, 4269, 4271, and 4272
This section contains information about the required number of SATA or SAS hard
disk drives for the supported level of RAID and SATA or SAS RAID configuration
for machine types 4266, 4269, 4271, and 4272.
Note: Your computer must have either all SATA hard disk drives or all SAS hard
disk drives installed. However, be sure that you do not install both the
SATA and SAS hard disk drives into the same computer.
Installing SATA or SAS hard disk drives
Your computer must have the minimum number of SATA or SAS hard disk drives
installed for the supported level of RAID below:
v RAID Level 0 – Striped disk array
– Two hard disk drives minimum
– Better performance without fault tolerance
v RAID Level 1 – Mirrored disk array
– Two hard disk drives minimum
– Improved read performance and 100% redundancy
v RAID Level 5 – Block-level striped disk array with distributed parity
– Three hard disk drives minimum
– Data striped at the byte level
– Stripe error correction information
– Better performance and fault tolerance
To install a new SATA or SAS hard disk drive, see “Installing a new hard disk
drive” on page 24.
Entering the Marvell BIOS Setup to configure SATA or SAS
RAID
This section describes how to enter the Marvell BIOS Setup to configure a SATA or
SAS RAID.
1. Turn on the computer after you have installed the required number of SATA or
SAS hard disk drives.
2. Press Ctrl+M when prompted to enter the Marvell BIOS Setup to configure
SATA/SAS RAID.
Configuring the Marvell BIOS Setup to enable SATA/SAS RAID
0, 1, or 5 functionality
This section provides instructions on how to enable SATA/SAS RAID functionality.
To enable SATA/SAS RAID functionality, use the Marvell BIOS Setup configuration
utility as the SATA/SAS configuration utility. This utility assumes that the system
has the required number of hard disk drives installed.
1. Turn on your computer and press Ctrl+M when prompted to enter the
Marvell BIOS Setup.
2. On the Marvell BIOS Setup screen, use the arrow keys to select RAID and
press Enter. The RAID Config menu opens.
3. From the RAID Config menu, select Create array.
Chapter 5. Configuring RAID 59