3Ware 9550SXU-16ML User Guide - Page 20

Chapter 1. Introducing the 3ware® 9000 Series Controller as spares for each other. The capacity used for each drive is rounded down to the nearest GB for drives under 45 GB (45,000,000,000), and rounded down to the nearest 5 GBytes for drives over 45 GB. For example, a 44.3 GB drive will be rounded down to 44 GBytes, and a 123 GB drives will be rounded. down to 120 GBytes. For more information, see the discussion of drive coercion under "Creating a Hot Spare" on page 135. Support for Over 2 Terabytes Windows 2000, Windows XP, Linux 2.4, and FreeBSD 4.x, do not currently recognize unit capacity in excess of 2 TB. If the combined capacity of the drives to be connected to a unit exceeds 2 Terabytes (TB), you can enable auto-carving when you configure your units. Auto-carving divides the available unit capacity into multiple chunks of 2 TB or smaller that can be addressed by the operating systems as separate volumes. The carve size is adjustable from 1024 to 2048 (default) through the CLI prior to unit creation. If a unit over 2 TB was created prior to enabling the auto-carve option, its capacity visible to the operating system will still be 2TB; no additional capacity will be registered. To change this, the unit has to be recreated. For more information, see "Multi LUN Support and Auto-Carving" on page 121. 3ware Tools for Configuration and Management 3ware software tools lets you easily configure the drives attached to your 3ware RAID controller, specifying which drives should be used together as a RAID unit and the type of RAID configuration you want, and designating hot spares for use if a drive degrades. 3ware provides several tools for use in configuring and managing units attached to the 3ware controller: „ 3BM (3ware BIOS Manager) „ 3DM 2 (3ware Disk Manager) „ 3ware CLI (Command Line Interface) 10 3ware 9550SX Serial ATA RAID Controller User Guide