Installing Sas Hard Disk Drives And Configuring Raid; Installing Sas Hard Disk Drives; Entering The Marvell Bios Setup To Configure Sas Raid; Configuring The Marvell Bios Setup To Enable Sas Raid 0, 1, Or 5 Functionality - Lenovo 415711U - THINKSTATION S20 TWR W3520 2.8G User Manual

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Installing SAS hard disk drives and configuring RAID

This section contains information about the required number of SAS hard disk
drives for the supported level of RAID and SAS RAID configuration.

Installing SAS hard disk drives

Your computer must have the minimum number of SAS hard disk drives installed
for the supported level of RAID below:
v RAID Level 0 – Striped disk array
v RAID Level 1 – Mirrored disk array
v RAID Level 5 – Block-level striped disk array with distributed parity
To install a new SAS hard disk drive, refer to the installation procedure in
"Replacing a hard disk drive" in the ThinkStation Hardware Installation and
Replacement Guide.

Entering the Marvell BIOS Setup to configure SAS RAID

This section describes how to enter the Marvell BIOS Setup to configure SAS
RAID.
1. Your computer must have a Marvell SAS adapter card (Marvell SAS controller)
2. Turn on the computer after you have installed the required number of SAS
3. Press Ctrl+M when prompted to enter the Marvell BIOS Setup to configure SAS
Configuring the Marvell BIOS Setup to enable SAS RAID 0, 1,
or 5 functionality
To enable SAS RAID 0, 1, or 5 functionality, use the Marvell BIOS Setup
configuration utility as the SAS configuration utility. This utility assumes that the
system has the required number of hard disk drives.
– Two hard disk drives minimum
– Better performance without fault tolerance
– Two hard disk drives minimum
– Improved read performance and 100% redundancy
– Three hard disk drives minimum
– Data striped at the byte level
– Stripe error correction information
– Better performance and fault tolerance
installed to configure SAS RAID. For installing or replacing a Marvell SAS
adapter card, refer to "Replacing an adapter card" in the ThinkStation Hardware
Installation and Replacement Guide.
hard disk drives and the Marvell SAS adapter card.
RAID.
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 Config
and press Enter. The RAID Config menu opens.
3. From the RAID Config menu, select Create array.
4. Use the arrow keys and the Enter key to select each free hard disk drive that
you want to include in the array.
5. Select Next and press Enter.
Chapter 6. Installing hard disk drives and configuring RAID
27

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