ADSM-L

Re: Is data still readable from a disk storage pool volume after expiration?

2003-03-28 13:26:34
Subject: Re: Is data still readable from a disk storage pool volume after expiration?
From: Alex Paschal <AlexPaschal AT FREIGHTLINER DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 28 Mar 2003 10:26:23 -0800
The data is only expired, not erased, until it's overwritten.

You can demonstrate this on your test server by

Back Something up to diskpool
Run DbBackup
Delete the Node
Expire Inv
Check to make sure diskpool shows 0% util
restore db
audit diskpool volumes
data is OK

Alex Paschal
Freightliner, LLC
(503) 745-6850 phone/vmail


-----Original Message-----
From: Orville Lantto [mailto:orville.lantto AT DATATREND DOT COM]
Sent: Friday, March 28, 2003 10:05 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Is data still readable from a disk storage pool volume after
expiration?


A client has asked if data on a disk storage pool is actually erased from
a storage pool when expiration occurs.  My intuition is that the space the
file occupies is only marked as available for writing, but I would like to
provide the client a more certain answer.  Does anybody  have a more
definitive answer?

Orville L. Lantto
Datatrend Technologies, Inc.  (http://www.datatrend.com)
IBM Premier Business Partner
121 Cheshire Lane, Suite 700
Minnetonka, MN 55305
Email: Orville.Lantto AT datatrend DOT com

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