Lenovo 4264, 4272, 4265, 4263 manual Configuring RAID for machine types 4266, 4269, 4271, and

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:

vRAID Level 0 – Striped disk array

–Two hard disk drives minimum

–Better performance without fault tolerance

vRAID Level 1 – Mirrored disk array

–Two hard disk drives minimum

–Improved read performance and 100% redundancy

vRAID 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