3Ware 9550SXU-16ML User Guide - Page 98
Unit Information, The type of unit or subunit. RAID 0, RAID 1, RAID
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Chapter 6. 3ware Disk Manager (3DM 2) details of a unit. To return to the list of units, click Unit Information in the menu bar. The Unit Details page shows details about a particular unit. The specific information shown depends on what type of unit it is. For example, details about a RAID 5 unit made up of three subunits, each of which contains one drive, will include details about the unit and each subunit, as shown in Figure 37. However, if the unit is a Single Disk, only information about one disk will be shown. Details on this page may include all or some of the following information described below. To see details about a particular drive, click the Port #. You'll see a list of all drives, with the drive you selected highlighted. Status. The operational status of the unit or subunit: OK, Rebuilding, Migrating, Initializing, Verifying, Degraded, or Inoperable (missing drives). When a unit is Rebuilding, Initializing, or Verifying, the percentage (%) complete is also shown. Capacity. The total capacity of the unit (capacities of subunits are not shown). Type. The type of unit or subunit. RAID 0, RAID 1, RAID 5, RAID 10, RAID 50, Single Disk, Spare, JBOD, or Disk Volumes. Displays the number of volumes in a unit. This is usually 1. If you have a unit with more than 2TB and you have enabled the auto-carving policy, you will see the number of volumes into which the unit has been divided. For more information, see "Multi LUN Support and Auto-Carving" on page 121. Stripe. The stripe size of the unit, if applicable. Subunits. If the unit has subunits, details of the subunits are shown. Note: If an asterisk (*) appears next to the status of a subunit, there is an error on one of the drives in the subunit. This feature provides a diagnostic capability for potential problem drives. The error may not be a repeated error, and may be caused by an ECC error, SMART failure, or a device error. Rescanning the controller will clear the drive error status if the condition no longer exists. Port #. If the Type is Disk, Single Disk, JBOD, or Spare, the port to which the drive is connected is shown. For multiple drive units, the port numbers are shown in the subunits section. The port number is a link to the Drive Information page. 88 3ware 9550SX Serial ATA RAID Controller User Guide