Re: image catalogs in library mode and HA

[DrFranken <midrange@xxxxxxxxxxxx>]

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