Keeping Archlogs in Sync HLA

Jorg Lueke

Keeping Archlogs in Sync HLA
Our DB2 is replicated near real time to the disaster site. Disk copies are
very nearly real time while tape can lag up to fifteen minutes. This means
that is either of the archlogs are on tape they may actually not get to the
disaster which could cause a problem. So we are doing archlog1 on disk, but
even then if we don't do archlog2 on disk we get a single point of failure.

My thinking is that after the initial archlogs are on disk and replicated
they can migrate to tape or any other storage but short term they should
both be on disk to maintain the redundancy in recoverability.

______________________________________________________________________

* IDUG 2009 Denver, CO, USA * May 11-15, 2009 * http://IDUG.ORG/lsNA *
______________________________________________________________________



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Bob Hale

Re: Keeping Archlogs in Sync HLA
(in response to Jorg Lueke)
We put both Archlogs to disk and then let HSM migrate them to tape.

Bob

-----Original Message-----
From: DB2 Data Base Discussion List [mailto:[login to unmask email] On Behalf Of Jorg Lueke
Sent: Friday, December 19, 2008 1:33 PM
To: [login to unmask email]
Subject: [DB2-L] Keeping Archlogs in Sync HLA

Our DB2 is replicated near real time to the disaster site. Disk copies are
very nearly real time while tape can lag up to fifteen minutes. This means
that is either of the archlogs are on tape they may actually not get to the
disaster which could cause a problem. So we are doing archlog1 on disk, but
even then if we don't do archlog2 on disk we get a single point of failure.

My thinking is that after the initial archlogs are on disk and replicated
they can migrate to tape or any other storage but short term they should
both be on disk to maintain the redundancy in recoverability.

______________________________________________________________________

* IDUG 2009 Denver, CO, USA * May 11-15, 2009 * http://IDUG.ORG/lsNA *
______________________________________________________________________



The IDUG DB2-L Listserv is only part of your membership in IDUG. The DB2-L list archives, FAQ, and delivery preferences are at http://www.idug.org/lsidug under the Listserv tab. While at the site, you can also access the IDUG Online Learning Center, Tech Library and Code Place, see the latest IDUG conference information and much more. If you have not yet signed up for Basic Membership in IDUG, available at no cost, click on Member Services at http://www.idug.org/lsms

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______________________________________________________________________



The IDUG DB2-L Listserv is only part of your membership in IDUG. The DB2-L list archives, FAQ, and delivery preferences are at http://www.idug.org/lsidug under the Listserv tab. While at the site, you can also access the IDUG Online Learning Center, Tech Library and Code Place, see the latest IDUG conference information and much more. If you have not yet signed up for Basic Membership in IDUG, available at no cost, click on Member Services at http://www.idug.org/lsms