Re: [ADSM-L] Need guidance on how to protect stgpool to cloud
2018-02-01 18:00:48
Hello Luc.
I'm not sure that Glacier is a good fit for most TSM data.
TSM has a lot of churn. Data expires and then you are left with a choice of
reclamation or storing excess data. Glacier retrieval is slow, so you would
have to mark volumes as offsite to allow reclamation from the primary copy.
(that’s something that we need BTW if anyone from development is reading this,
the ability to mark a copypool as offsite so that the offsite reclamation
strategy is always used). Glacier storage is cheap but there are access and
retrieval costs, and there is a charge for keeping less than 90 days.
What it would be good for is storing exports or backupsets of data that needs
to be kept for long periods for regulatory purposes, as once written that never
changes.
If it were me I'd go with standard S3 until I understood my data access pattern
and move to Glacier once I was convinced that was a good deal.
I did once set up a system that lived entirely on AWS. Two TSM Servers in
different zones, that replicated to one another. We used S3 there, but I was
not further involved after set up. The TSM Servers were, of course, the
biggest and most expensive resource consumers in the whole fleet.
It would be great if you could report here what you eventually decide
Cheers
Steve
Steven Harris
TSM Admin/Consultant
Canberra Australia
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Michaud, Luc [Analyste principal - environnement AIX]
Sent: Friday, 2 February 2018 1:27 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Need guidance on how to protect stgpool to cloud
Greetings to you all,
We've setup a blueprint replicated environment with directory container pools
on both sides.
We protect the primary node stgpools to tape as well, with offsite movements.
Now we want to get rid of the tapes, most likely by leveraging AWS Glacier.
We have been exposed to a limitation of containers only being able to have 1
container protection and 1 tape protection.
How have you guys done it ? Any trick or caveat that we should be aware of ?
Regards,
Luc Michaud
Société de Transport de Montréal
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