Re: Volume shadow copy v17
On Oct 10, 2018, at 1:48 PM, Chuck Miller wrote:
> Has anyone implemented this feature and tested to make sure it works as
> advertised.
Hi Chuck,
I’ve got it implemented on one v17 application. Easy to setup. Just launch 4D
Server as Administrator and 4D creates a Windows Service called “VSS {database
name}. From then on it’s all low level, hidden magic to me.
I don’t know how you would easily test it to prove it works. A test would be
rather complicated to even set up.
I guess you would have rig up some kind of environment where 4D Server was
doing a giant cache flush that took many seconds, and just as that is happening
you force the VM to take a snapshot. Then maybe you crash 4D Server?
Then you would have to restore the snapshot and do some kind of datafile audit
to see if any data was lost and also do an MSC to ensure no data file damage.
Just guessing.
Seems like conducting a test of this super low level feature that also
integrates with the VM snapshot feature would be super hard to setup and then
prove that it worked.
You might have to just depend on 4D doing it right and that does work. That’s
what I’m doing. But maybe I’m a little too trusting. :)
Tim
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Tim Nevels
Innovative Solutions
785-749-3444
timnev...@mac.com
*
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Volume shadow copy v17
Hi All, Has anyone implemented this feature and tested to make sure it works as advertised. Thanks and regards Chuck Chuck Miller Voice: (617) 739-0306 Informed Solutions, Inc. Fax: (617) 232-1064 mailto:cjmillerinformed-solutions.com Brookline, MA 02446 USA Registered 4D Developer Providers of 4D and Sybase connectivity http://www.informed-solutions.com This message and any attached documents contain information which may be confidential, subject to privilege or exempt from disclosure under applicable law. These materials are intended only for the use of the intended recipient. If you are not the intended recipient of this transmission, you are hereby notified that any distribution, disclosure, printing, copying, storage, modification or the taking of any action in reliance upon this transmission is strictly prohibited. Delivery of this message to any person other than the intended recipient shall not compromise or waive such confidentiality, privilege or exemption from disclosure as to this communication. ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
