Grass Valley PRS 250 RAID Storage System - Manual (Page 55)

Changing Physical Disk Configurations
RAID Instructions 3-9
Unbinding a Physical Disk Unit
You use DASSMGR to unbind a physical disk unit. Unlike binding, unbinding takes
only a few moments.
CAUTION: Unbinding a physical disk unit effectively erases all information on the
physical disk unit. You cannot use any unbound module until you bind it into a
logical unit again, make the unit available to the operating system, and create a
volume on the unit. Additionally, all information in the Profile partition is lost. The
only time one would unbind is in the case of a double faulted LUN.
To unbind a physical disk unit:
1. From the GridMgr Main Menu, choose the Unbind Logical Units option.
2. After reading the advisory screen that appears, press Enter.
The grid appears with all disk modules of the first-bound logical unit (unit 0)
highlighted. The figure that follows shows a sample grid.
Sample grid for unbinding a logical unit
3. Use the direction arrows to highlight the physical disk unit you want to unbind.
GRIDMGR highlights all modules in the logical unit when you select one of the
modules.
4. Press the Enter key to select the highlighted physical disk unit for unbinding.
A screen appears warning you that unbinding destroys all data on the physical disk
unit, and then asks if you want to unbind this physical disk unit.
5. If you want to unbind the physical disk unit, type Y and press Enter; otherwise,
cancel the unbind operation by typing N.
The SP unbinds the physical disk. For each module, the status changes from ENA
or RDY to UNB and the unit number changes to the unbound module symbol (**).
If you want to unbind another physical disk, repeat the procedure.
SP A
SP SCSI ID 0 Unbind Logical Units
1 ENA ENA ENA ENA ENA
1 1 1 1 1
3 UNB UNB UNB UNB UNB
** ** ** ** **
2 UNB UNB UNB UNB UNB
** ** ** ** **
A B C D E
0 ENA ENA ENA ENA ENA
0 0 0 0 0
A B C D E