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MicroVAX Volume Shadowing

 
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MicroVAX Volume Shadowing

Hi, I am trying to add a disk to a shadow volume but I get an invalid device name.

What is likely to be the cause, details below ( the sho dev d was run before the mount) ?

VAX/VMS V5.5-2H4

FINE_ARTS2>mount/system DSA0: /shadow = (DKA300:,DKA0:) VAXVMS2H4055
%MOUNT-I-SHDWMEMSUCC, _SYBIL$DKA300: is now a valid member of the shadow set
%MOUNT-I-SHDWMEMFAIL, DKA0: failed as a member of the shadow set
-SYSTEM-F-IVDEVNAM, invalid device name

FINE_ARTS2>sho dev d

Device        Device      Error Volume          Free  Trans Mnt
Name          Status      Count Label          Blocks Count Cnt
DSA0:         Mounted         0 VAXVMS2H4055  3280230   226 1
SYBIL$DKA0:   Online          0
SYBIL$DKA100: Mounted         0 MORE_APPS       69165     4 1
SYBIL$DKA200: Mounted         0 SYBIL_APPS     318066     1 1
SYBIL$DKA300: ShadowSetMember 0 (member of DSA0:)
SYBIL$DKA400: Mounted         0 APPS_4        1001226     9 1
SYBIL$DKA500: Mounted         0 APPS_5         707772     1 1

Thanks

Stephen

1 REPLY 1
Volker Halle
Honored Contributor
Solution

Re: MicroVAX Volume Shadowing

Stephen,

when using shadowing of local disk devices, you need to use a non-zero disk allocation class, so disks are called $n$DKAx: instead of nodename$DKAx:

Set the system parameter ALLOCLASS to a non-zero value (e.g. 1) and reboot the system. Then you can form shadowsets from local disks.

Volker.