3Ware 9550SXU16MLB10 User Guide - Page 83

Exporting JBOD Disks, 2TB Auto-Carving., BM Policy Screen

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Setting Policies for a Controller through 3BM manually. For staggering to work properly, the drives must support the selected method. „ 2TB Auto-Carving. When this feature is enabled, any unit that is over 2TB will be broken down into multiple volumes with 2TB each, plus a remainder volume. For example, if the unit is 2.5 TB then it will contain two volumes, with the first volume containing 2TB and the second volume containing 0.5 TB. If the unit is 5.0 TB then it will contain 3 volumes, with the first two volumes containing 2TB each and the last volume containing 1TB. This auto-carving feature is sometimes referred to as multi-LUN, where each volume that is created is referred to as a "LUN." All of these policies.can be set and changed on the 3BM Policy screen, shown in Figure 29. Figure 29. 3BM Policy Screen Exporting JBOD Disks By default, JBOD disks (unconfigured disks) connected to the 3ware RAID controller are not exported to the operating system. This means that any drives you leave unconfigured are not seen by the operating system, and cannot be used for storage. When Export JBOD Disks is set to No, you make individual disks available for use by configuring them as Single Disks. If you want unconfigured disks to be available on your computer, you can change this setting. www.3ware.com 77

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Setting Policies for a Controller through 3BM
www.3ware.com
77
manually. For staggering to work properly, the drives must support the
selected method.
2TB Auto-Carving.
When this feature is enabled, any unit that is over
2TB will be broken down into multiple volumes with 2TB each, plus a
remainder volume. For example, if the unit is 2.5 TB then it will contain
two volumes, with the first volume containing 2TB and the second
volume containing 0.5 TB.
If the unit is 5.0 TB then it will contain 3
volumes, with the first two volumes containing 2TB each and the last
volume containing 1TB.
This auto-carving feature is sometimes referred to as multi-LUN, where
each volume that is created is referred to as a “LUN.”
All of these policies.can be set and changed on the 3BM Policy screen, shown
in Figure 29.
Figure 29. 3BM Policy Screen
Exporting JBOD Disks
By default, JBOD disks (unconfigured disks) connected to the 3ware RAID
controller are not exported to the operating system. This means that any drives
you leave unconfigured are not seen by the operating system, and cannot be
used for storage. When Export JBOD Disks is set to No, you make individual
disks available for use by configuring them as Single Disks.
If you want unconfigured disks to be available on your computer, you can
change this setting.