VTrak M-Class Product Manual
7.From the Assigned Channel List, click on Channel 1 or 2.
The Channel ID number appears under LUN Assignment Worksheet.
8.From the Target ID dropdown menu, select a Target ID number. Target IDs range from 0 to 15.
9.From the LUN dropdown menu, select a LUN.
LUNs range from 0 to 63. The number of available LUNs may be less, depending on the capability of your SCSI HBA card.
You must enter different LUN numbers for each logical drive.
10.Click the Assign button.
11.Click the Submit button.
LUN Mapping Parameters
•Channel ID – The VTrak controller SCSI ID number, 1 or 2
•Target ID – Active Target ID on this logical drive for the selected port.
•LUN – Logical Unit Number on this logical drive for the selected port.
Spare Drives
The Spare
When a physical drive in a disk array fails and a spare drive of adequate capacity is available, the disk array will begin to rebuild automatically using the spare drive. See “Critical & Offline Disk Arrays” on page 286.
You must assign an unconfigured physical drive in order for it to function as a spare drive. See “Create Spare Drive” on page 151.
To access the Spare
1.Click the Subsystem 
icon in Tree View.
2.Click on the Spare Drives 
icon.
The Spare
•ID – The unique ID number assigned to the spare drive.
•Operational Status – OK is normal. Can also show Rebuilding, Transition Running, PDM Running or Offline.
•Capacity – The data storage capacity of this spare drive.
•Revertible – Yes or No. A revertible spare drive automatically returns to its spare drive assignment after the failed physical drive in the disk array is replaced.
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