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Easy tier and Spectrum Protect don't mix.
Whatever you do, don't put the Spectrum Protect Server database on easy tier, and don't use container pools if you plan to put them on easy tier.
That leaves you with random pool, but not sure it's a good match for easy tier either.
The issue is that easy tier works well for an application that keeps adding new data, but rarely accesses old data. Spectrum Protect works in a random matter. New data is ingested daily, and old data is expired daily. So need to access both old and new on a constant basis. Easy tier just works against you with such an environment.
With easy tier, hard to tell. If you do sequential, that "may" work better. Old volumes will be tiered to slow disks, and hopefully new volumes will be created on fast disks for your backups to write to.OK, thanks marclant
So between random disk devclass and sequential file devclass, wich will be better for TDP for SAP HANA?
Best regards,
AjM
With easy tier, hard to tell. If you do sequential, that "may" work better. Old volumes will be tiered to slow disks, and hopefully new volumes will be created on fast disks for your backups to write to.
My recommendations is test both ways, both backups and restores for at least a few days.
OK, thanks marclant.There shouldn't be much difference either way. Random has less management. In either cases, following best practices will be what's going to affect the performance the most: https://www.ibm.com/support/knowledgecenter/SSEQVQ_8.1.8/perf/r_srv_hw_disks.html
If you are not using easy tier, then you could potentially use container pools, but if you do, make sure to follow the Blueprint: http://ibm.biz/IBMSpectrumProtectBlueprints
For storage pools that use DISK device classes, have you determined how many storage pool volumes to put on each file system?
Did you create your storage pools to distribute I/O across multiple file systems?