Re: image catalogs in library mode and HA

You've got the pieces but some thoughts.

1) The image catalog object in QUSRSYS is redundant really in this setup.
The images as you know are in the IFS and the QIMGCLG file contains what's
in the image catalog. So if you have the entire directory and then do
CRTIMGCLG with IMPORT(*YES) the QUSRSYS object will be created instantly
and in it's entirety.

2) The virtual optical device (e.g. OPTVRT01) can't be saved and restored.
OK it restores, but the virtual device that supports it won't be there and
it won't vary on. So you need to use CRTDEVOPT on the HA system to create
it there.

So mostly that leaves you the images themselves. So depending on the
technology the replication software uses you need to assure that those
objects are replicated. Clearly these are the big bulk of the bytes anyway.

- Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com


On 9/19/2014 1:50 PM, Jim Franz wrote:

We use image catalogs in library mode (this is not ptfs or OS stuff, but

real images stored on disk) and virtual image devices for our
applications.
Now looking a cloud based HA (high availability) solution and they are
asking questions about the objects related to this.
Is anyone else doing HA and virtual images - need to verify I have all the
related components:

1. IMGCLG01 *IMGCLG QUSRSYS

2. Catalog . . : IMGCLG01 Status . . . : Ready
Type . . . . : Optical Device . . . : OPTVLB01
Directory . : /EKDVIRTUAL/IMGCLG01

3. OPTVLB01 632B Virtual Optical for IMGCLG01 Catalog


4. Directory . . . . : /ekdvirtual/IMGCLG01

Opt Object link
.
..
OAJ015 >>>>> we have 100 catalog entries per catalog (8
catalogs)
OAJ016
QIMGCLG

Object . . . . . . : /ekdvirtual/IMGCLG01/OAJ015

Type . . . . . . . . . . . . . . . . . : STMF

Owner . . . . . . . . . . . . . . . . : GR_WAFEKD
System object is on . . . . . . . . . : Local
Auxiliary storage pool . . . . . . . . : 1
Object overflowed . . . . . . . . . : No

Coded character set ID . . . . . . . . : 37
Hidden file . . . . . . . . . . . . . : No
PC system file . . . . . . . . . . . . : No
Read only . . . . . . . . . . . . . . : No

Need to archive (PC) . . . . . . . . . : Yes
Need to archive (System) . . . . . . . : Yes
Creation date/time . . . . . . . . . . : 06/04/14 07:06:56
Last access date/time . . . . . . . . : 09/19/14 01:13:33
Data change date/time . . . . . . . . : 09/19/14 01:13:33
Attribute change date/time . . . . . . : 09/19/14 01:13:33

Size of object data in bytes . . . . . : 2310567936
Allocated size of object . . . . . . . : 2311323648
File format . . . . . . . . . . . . . : *TYPE2
Size of extended attributes . . . . . : 0
Storage freed . . . . . . . . . . . . : No
Temporary object . . . . . . . . . . . : No
Disk storage option . . . . . . . . . : *DYNAMIC
Main storage option . . . . . . . . . : *DYNAMIC

Auditing value . . . . . . . . . . . . : *NOTAVL
Object domain . . . . . . . . . . . . : *SYSTEM

Number of hard links . . . . . . . . . : 1


Last used date . . . . . . . . . . . . : 09/19/14
Days used count . . . . . . . . . . . : 76


Allow write during save . . . . . . . : No
Can be saved . . . . . . . . . . . . . : No
System use . . . . . . . . . . . . . . : *VRTVOL


Jim Franz

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