beautypg.com

2 setting the device unit number – Compaq AA-RHGWB-TE User Manual

Page 150

background image

that at this point, even though the table is filled in, we do not yet know
the device names or dskn numbers.

Table 6–2: Converting Storageset Unit Numbers to Disk Names

File System
or Disk

HSG80
Unit

Worldwide Name

User
Define
Identifier
(UDID)

Device Name

dsk

n

Member 1 boot
disk

D131

6000-1FE1-0000-0D60-
0009-8080-0434-002F

131

dga131.1001.0.1.0 dsk17

Member2 boot
disk

D132

6000-1FE1-0000-0D60-
0009-8080-0434-0030

132

dga132.1001.0.1.0 dsk16

Tru64 UNIX
disk

D133

6000-1FE1-0000-0D60-
0009-8080-0434-002E

133

dga133.1001.0.1.0 dsk15

Quorum disk

D141

6000-1FE1-0000-0D60-
0009-8080-0434-0029

141

N/A

a

dsk21

Cluster root (/) D142

6000-1FE1-0000-0D60-
0009-8080-0434-002A

142

N/A

a

dsk20

/usr

D143

6000-1FE1-0000-0D60-
0009-8080-0434-002B

143

N/A

a

dsk19

/var

D144

6000-1FE1-0000-0D60-
0009-8080-0434-0028

144

N/A

a

dsk18

a These units are not assigned an alias for the device unit number by the WWID manager command, therefore, they do not
get a device name and will not show up in a console show dev display.

6.6.2 Setting the Device Unit Number

Set the device unit number for the Fibre Channel disks to be used as the
Tru64 UNIX Version 5.0A installation disk and cluster member boot disks.
Setting the device unit number allows the installation scripts to recognize
a Fibre Channel disk. You have to set the device unit number because the
64-bit worldwide name is too large to be used as the device unit number.
When you set the device unit number, you set an alias for the device
worldwide name.

You use the WWID manager (wwidmgr) to define a device unit number that
is an alias for Fibre Channel devices. For instance, if DKA0 or DKA100 are
part of the device name seen in a show dev display, 0 or 100 is the device
unit number.

To set the device unit number for a Fibre Channel device, follow these steps:

1.

Obtain the user define identifier (UDID) for the HSG80 storageset to
be used as the Tru64 UNIX Version 5.0A installation disk or cluster
member system boot disks. In the example in Table 6–2 the Tru64 UNIX

6–40 Using Fibre Channel Storage