increase disk size - online

[Jiri Koutnik]

Hi,
I have got DSA1: with 2 members. Need to increase size from 10 to 20GB.
Disk is mounted /system.
disk are built on EVA5000.
Does anybody know the best way to do it ?
I mean without Dismount :-)
running VMS 7.3-2

thanx Jiri

[Ian Miller.]

is the expansion size limit (in SHOW DEV/FULL) larger than or equal to 20Gb?

[Ian Miller.]

See also
http://h71000.www7.hp.com/doc/732FINAL/aa-pvxmj-te/00/00/15-con.html#dynamicvolumeexpansion

[Ian Miller.]

and
http://h71000.www7.hp.com/doc/732FINAL/aa-pv5mh-tk/00/00/89-con.html

[Jan van den Ende]

Jiri,

depends on HOW it was INITed.
INIT since some time supports the /LIMIT qualifier (max value 125G * clustersize, absolute max 1T ) which defines how big your "disk" can grow. Introduced because "disks" on SAN are just "a chunk of diskspace presented to the OS", and can grow. And it is quite nice that it also applies to shadow sets: together with allowing dissimilar members, it provides for "rolling" growth of those.

But, regrettably, the bottom line is that at one time, an INIT/LIMIT must be (have been) done.

hth

Proost.

Have one on me.

jpe

[Robert Gezelter]

Jiri,

I am in the middle of multiple client emergencies, but I covered some of the issues you are interested in in my presentation "Migrating OpenVMS Storage Environments without Interruption or Disruption" at the 2005 HP Technology Symposium. The slides from this talk are available at http://www.rlgsc.com/hptechnologyforum/2005/1146.html

- Bob Gezelter, http://www.rlgsc.com

[Ian Miller.]

Instead of INIT/LIMIT you can do
$ SET VOLUME/LIMIT
but the disk must be mounted privately when you do this.