Mimic TSM4VE’s snapshotting in VMware (snapshot quiescing troubleshooting)


Sometimes you might run into a failing TSM4VE backup. In this case, when the creation of a snapshot is not possible. A good place to start is to use VMware’s vSphere software to try to manually create the snapshot.

A common misunderstanding is that sometimes this “direct” VMware snapshot performs just fine and someone thinks that TSM4VE must be the problem. To correctly mimic TSM4VE’s snapshot behavior on the VMware level you need to select the correct options.

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TSM and the bit bucket (/dev/null)


In the past I’ve seen that people are asking for a TSM backup to /dev/null. It’s also a request on the ADSM.ORG forum and the ADSM-L mailing list. A TSM backup to /dev/null appears to be a myth. Or is it?

This procedure used to be available for customers through the TSM support site. However, it looks like this procedure is not published anymore. There is no mention of it at all in the Administrator’s Guide or Administrator’s Reference. So, this must be considered as undocumented, but it is possible – and although not common knowledge, it might be very interesting for TSM administrators for testing and troubleshooting purposes. I mean, even if you don’t have the storage, you now can emulate DBB’s, clients backups, backup stgpools, etc. All the processing from a TSM client/server perspective still happens, but the actual data is not stored.

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New Redbook published: IBM ProtecTIER Implementation and Best Practices Guide


This newest ProtecTIER related Redbook is currently in draft (planned for 28 March 2014), but again full of good information:

IBM ProtecTIER Implementation and Best Practices Guide

From the IBM Redbooks website:

“This IBM® Redbooks® publication provides best practice guidance for planning, installing, and configuring the IBM TS7600 ProtecTIER® family of products. This guide provides all the latest best practices for using ProtecTIER Software Version PGA 3.3.x and the revolutionary and patented IBM HyperFactor® deduplication engine, along with other data storage efficiency techniques, such as compression and defragmentation.”

Also, there are 2 references to previous TSMBlog.org articles in this Redbook.
For more information on IBM ProtecTIER single-stream performance, refer to the following:
http://www.tsmblog.org/ibm-protectier-single-stream-performance

For information on Tweaking TSM for Virtual Environments and IBM ProtecTIER
single-stream backup performance refer to:
http://www.tsmblog.org/tweak-tsm-for-virtual-environments-and-ibm-protectier
-single-stream-backup-performance

—- Tommy Hueber

New Redbook published: Harnessing the Power of ProtecTIER and Tivoli Storage Manager


This newest TSM related Redbook is currently in draft (planned for 31 March 2014), but loaded with tons of good information:

Harnessing the Power of ProtecTIER and Tivoli Storage Manager

From the IBM Redbooks website:

“This book discusses implementation of the data protection solution of IBM ProtecTIER running in a Tivoli Storage Manager environment. It walks readers through the process of planning, setting up, and configuring Tivoli Storage Manager in a ProtecTIER environment. We provide guidance, hints and tips, and trouble shooting for implementing Tivoli Storage Manager with ProtecTIER, backup and restore scenarios, and explain the differences in replication and deduplication in ProtecTIER versus Tivoli Storage Manager implementations. Also provided are disaster recovery approaches which focus on the ProtecTIER Virtual Tape Library (VTL) interface, with some discussion as a File System Interface (FSI).”