HP XP P9500 Storage - Manual (Page 187)

For an OpenVMS server host, you can enter a UUID composed of a Prefix and an Initial
Number. The Prefix may include up to 5 digits, from 1 to 32767, and the Initial Number may
include up to 5 digits, from 0 to 32767.
For a server host other than OpenVMS, you can enter a UUID composed of a Prefix and an
Initial Number. The Prefix may include up to 64 ASCII characters (letters, numerals and symbols)
and the Initial Number may include up to 9 digits.
When changing the server host OS from HP-UX to Open VMS, or from Open VMS to HP-UX,
the same UUID cannot be used continuously. Clear the UUID setting (see
“Clearing a UUID
setting” (page 189) ), and then set the proper UUID for a server host.
8. To sequentially number the UUIDs, type the first digit in the Initial Number box. The following
rules apply to the Initial Number:
1: Up to 9 numbers are added (1, 2, 3, ... 9).
08: Up to 92 numbers are added (08, 09, 10, ... 99).
If the host mode is set to OpenVMS, the numbers are as follows:
8, 9, 10, ... 99
23: Up to 77 numbers are added (23, 24, 25, ... 99).
9. Click Finish.
10. In the Confirm window, confirm the settings, in Task Name type a unique name for this task
or accept the default, and then click Apply.
If Go to tasks window for status is checked, the Tasks window opens.
Correspondence table for defining devices
When configuring the storage system, you will need definition information about devices set by
LUN Manager, for example, LUs, LDKC:CU:LDEV, or UUID. A correspondence table similar to the
example below is useful and recommended when collecting this information.
OpenVMS device file
name UUID LDKC:CU:LDEV LU Port
$1$dga148 148 00:00:30 0000 BR
$1$dga149 149 00:00:31 0001 BR
. . . . .
. . . . .
. . . . .
Defining alternate LU paths
You may want to define alternate LU paths so that if one LU path fails, you will be able to switch
to its alternate path.
To create an alternate LU path, copy the original LU path from one port to another. For example,
if you want to define an alternate for the LU path from the CL1-A port to logical volume 00:00:01,
copy the LU path from the CL1-A port to another port.
Use one of these methods to copy LU paths:
•
Copy all the LU paths defined in a host group
•
Copy one or more (but not all) LU paths defined in a host group
Before taking the following steps:
•
See “LUN Manager rules, restrictions, and guidelines” (page 172) for important information.
•
To define alternate paths when LUN security is disabled, you must redefine the LU path.
Configuring LU paths 187