Operating System - OpenVMS
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Mirroring the System Drive

Jorge Cocomess
Super Advisor

Mirroring the System Drive


I just realized that my system drive (sysdisk) is a JBAUD device. Is there a way to mirror this drive after the fact or I have to recreate the mirror from the getgo? My openVMS version is currently at 7.3-2 - I have multiple controllers setup to talk to this server, which they are HSG70 & HSG80.

Please provide your advice.

Thank you in advance.


sho dev /full $10$DKA600:

Disk $10$DKA600: (Bears), device type DEC RZ1DF-CB, is online, mounted, file-
oriented device, shareable, available to cluster, error logging is enabled.

Error count 0 Operations completed 18476655
Owner process "" Owner UIC [SYSTEM]
Owner process ID 00000000 Dev Prot S:RWPL,O:RWPL,G:R,W
Reference count 868 Default buffer size 512
Current preferred CPU Id 3 Fastpath 1
Total blocks 17773524 Sectors per track 168
Total cylinders 5290 Tracks per cylinder 20
Logical Volume Size 17769177 Expansion Size Limit 18505728
Allocation class 10

Volume label "SYSDISK" Relative volume number 0
Cluster size 18 Transaction count 616
Free blocks 6986700 Maximum files allowed 467698
Extend quantity 5 Mount count 1
Mount status System Cache name "_$10$DKA600:XQPCACHE"
Extent cache size 64 Maximum blocks in extent cache 698670
File ID cache size 64 Blocks in extent cache 38502
Quota cache size 0 Maximum buffers in FCP cache 4270
Volume owner UIC [1,1] Vol Prot S:RWCD,O:RWCD,G:RWCD,W:RWCD

Volume Status: ODS-5, subject to mount verification, protected subsystems
enabled, write-through caching enabled.