On Wed, 13 Sep 2006 15:04:35 -0500, Glenn Miller <[EMAIL PROTECTED]> 
wrote:

>Hi Dave,
>
>We use the EMC Timefinder/SNAP and EMC/SRDF.  I believe we have experienced
>the 'issue' you have
>described based on a couple of assumptions.  I am assuming that when you
>say: "SRDF comes along

Yes, I believe that is correct. I don't manage the SRDF part and I'm
not real familiar with the details of the process. It is as you've
outlined the target volumes are in HELD status and a CONFIG RELEASE(YES)
must be issued to allow the SRDF process to execute a consistent split.


>We have had dialogs with EMC regarding this issue because the RELEASE
>requirement was not documented

Another one of my complaints. We did have some useful conversations
with one of the EMC techs though, so we might get some action out of
it. I'll let you know if I hear anything good.


>
>Our solution to the problem was to issue the Timefinder/SNAP CONFIG RELEASE
>command via our D/R replication
>software we wrote in-house to support the SRDF & Timefinder/MIRROR ( the
>BCV's on the D/R DASD unit ).
>

So you track which volumes you've SNAP'd to ??? You only execute this as
one large process ??? And release everything at the end ???

We're using the dataset SNAP daily for non-DR purposes. The target
volumes change. They're in a pool that might be the target of multiple
SNAPs that occur in parallel. Our needs are to release volumes that
were the target of a SNAP as long as there are no other SNAP processes
running that also target that volume. And probably iteratively preform
that type of release as SNAP processes end. We need the HOLDs to assure
consistent and usable DR data.

Another disappointment concerns the latest software release from EMC.
When we first experienced this problem, EMC pulled a MicroSoft on me
and said I had to upgrade the software (I hadn't upgraded in a while
in anticipation of a possible platform change decision). I upgraded
everything. Had a nightmare dealing with their website downloading
software. Finally got everything downloaded, installed and implemented.
The last time we had a problem, I ran the RELEASE command and it failed.
We're now at TimeFinder 5.4.0 and TimeFinder SNAP 5.6.0. At least the
previous version let me manually release the volumes after ensuring
no SNAPs were running. Now we have to have the EMC hardware team dial
in to the array and do it for us.

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