topic Re: Query: Increase Virtual volume size on 3PAR with Open VMS in HPE 3PAR StoreServ Storage

Increase Virtual volume size on 3PAR with Open VMS

AhmedWosaibai — Tue, 14 Dec 2021 04:50:02 GMT

Dears,

i would like to increase the siize of one of our virtual volumes in 3PAR. the host operating system is Open VMS. i would like to know how to scan the changes in OVMS and how safe is this operation.

Regards,

Query: Increase Virtual volume size on 3PAR with Open VMS

support_s — Mon, 13 Dec 2021 12:00:35 GMT

System recommended content:

1. HPE 3PAR VMware ESX/ESXi Implementation Guide

2. PowerShell Toolkit for HPE Primera and 3PAR 3.0 User Guide

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Re: Query: Increase Virtual volume size on 3PAR with Open VMS

Sheldon Smith — Mon, 13 Dec 2021 14:59:38 GMT

Wow, that takes me back a decade or two! OpenVMS added Dynamic Volume Expansion back during v7.3-x. The volume needed to be initialized for future expansion. See the System Manager’s Manual, Volume 1: Essentials.

A volume could be expanded up to a limit based on its internal bitmap size and its internal cluster size. Depending on how large you need to expand, you will probably need to create a second volume and copy everything over. Review the INITIALIZE options for any subsequent expansions while you're at it.

Check over at VMSsoftware.com for further information and help.