Chapter 1. Introducing the 3ware® 9000 Series Controller10 3ware 9550SX Serial ATA RAID Controller User Guideas spares for each other. The capacity used for each drive is rounded down tothe nearest GB for drives under 45 GB (45,000,000,000), and rounded downto the nearest 5 GBytes for drives over 45 GB. For example, a 44.3 GB drivewill 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 drivecoercion under “Creating a Hot Spare” on page 135.Support for Over 2 TerabytesWindows 2000, Windows XP, Linux 2.4, and FreeBSD 4.x, do not currentlyrecognize unit capacity in excess of 2 TB.If the combined capacity of the drives to be connected to a unit exceeds 2Terabytes (TB), you can enable auto-carving when you configure your units.Auto-carving divides the available unit capacity into multiple chunks of 2 TBor smaller that can be addressed by the operating systems as separatevolumes. The carve size is adjustable from 1024 to 2048 (default) through theCLI prior to unit creation.If a unit over 2 TB was created prior to enabling the auto-carve option, itscapacity visible to the operating system will still be 2TB; no additionalcapacity will be registered. To change this, the unit has to be recreated.For more information, see “Multi LUN Support and Auto-Carving” onpage 121.3ware Tools for Configuration andManagement3ware software tools lets you easily configure the drives attached to your3ware RAID controller, specifying which drives should be used together as aRAID unit and the type of RAID configuration you want, and designating hotspares for use if a drive degrades.3ware provides several tools for use in configuring and managing unitsattached to the 3ware controller: 3BM (3ware BIOS Manager) 3DM 2 (3ware Disk Manager) 3ware CLI (Command Line Interface)
