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Chapter 8. Installing hard disk drives and conguring RAID
(types: 4155, 4158, 4218)
This chapter contains information about installing hard disk drives and conguring Redundant Array of
Independent Disks (RAID) for this product.
Note: The information about conguring RAID in this chapter only applies for a Windows environment. For
information about conguring RAID in a Linux environment, contact your Linux software provider.
Installing SATA or SAS hard disk drives and conguring RAID
This section contains information about the required number of SATA or SAS hard disk drives for the
supported level of RAID conguration.
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:
• RAID Level 0 – Striped disk array
– Two hard disk drives minimum
– Better performance without fault tolerance
• RAID Level 1 – Mirrored disk array
– Two hard disk drives minimum
– Improved read performance and 100% redundancy
• 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
• RAID Level 10 – Combining features of RAID 0 and RAID 1
– Four hard disk drives minimum
– Very high reliability combined with high performance
– Fault tolerance
To install a new SATA or 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 congure SATA or SAS RAID
This section describes how to enter the Marvell BIOS Setup to congure 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 congure SATA/SAS RAID.
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