Grass Valley PRS 250 RAID Storage System - Manual (Page 54)

Chapter 3 Servicing the System
3-8 RAID Instructions
modules being bound. Generally, binding takes about 30 minutes to initialize data
on 4-Gbyte modules.
As soon as the binding operation starts, it changes the unbound module symbol
(**) to logical unit number you specified for each module being bound.
While a unit is binding, you can proceed to bind another unit by repeating the
procedure. After you have selected the last LUN and started it binding you will get
an error message stating there are no more modules available to bind. This is
normal. Press ^ to get back to Grid Manager and view the binding progress. When
the binding is finished, the disk status changes from BIN to ENA.
IMPORTANT To determine the progress of the binding procedure, highlight
one of the group’s disk modules and press Enter. The Performance statistics
screen displays a percentage complete figure. For more information, see
Performance statistics screen later in this chapter.
9. Reboot the RAID Storage chassis.
Binding with Two SPs
If your RAID storage chassis is configured with two SPs, you should bind
approximately half of your disk modules with each SP. This will ensure maximum
transfer speeds to and from the RAID storage chassis.
For example, if you have ten disk modules, you should bind A0 through E0 into LUN
0 with SP A, and A1 though E1 into LUN 1 with SP B. If you have twenty disk
modules, you should bind LUN 0 and LUN 2 with SP A, and LUN 1 and LUN 3 with
SP B. If you have fifteen disk modules, bind ten with one SP, and five with the other.
There are two ways to bind disk modules with two SPs. The easiest is to use two
Profile system COM ports to communicate with the two SPs individually.
1. Connect one Profile system COM port (COM1, for example) to the first SP with a
serial cable.
2. Connect the second Profile system COM port (COM2, for example) to the second
SP.
3. Start two instances of DASSMGR, specifying a different COM port for each
instance.
4. Bind the appropirate disk modules in each instance of DASSMGR.
You can also use the same Profile system COM port to communicate with both SPs,
one after the other.
1. Make the serial connection from one of the Profile system’s RS 232 ports (COM2
for example) to the first SP.
2. Start DASSMGR on the appropirate COM port and perform the bindings for the
first SP.
3. Exit DASSMGR.
4. Change the serial connection to the other SP.
5. Start DASSMGR on the same COM port and perform the remaining bindings with
the second SP.