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Need guidance on how to protect stgpool to cloud

Posted by Michaud, Luc [Analyste principal - environnement AIX] 
Michaud, Luc [Analyste principal - environnement AIX]
Need guidance on how to protect stgpool to cloud
February 01, 2018 06:59AM
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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Harris, Steven
Re: Need guidance on how to protect stgpool to cloud
February 01, 2018 03:59PM
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@VM.MARIST.EDU] On Behalf Of Michaud, Luc [Analyste principal - environnement AIX]
Sent: Friday, 2 February 2018 1:27 AM
To: ADSM-L@VM.MARIST.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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Stefan Folkerts
Re: Need guidance on how to protect stgpool to cloud
February 02, 2018 03:59AM
I don't you can use cloud storage as a copypool so that would mean you are
placing your primarypool in the cloud and limiting (in an extreme way) your
restore performance.

It is fast enough for archival purposes (if you set it up correctly and
have enough of a local buffering pool and bandwith) and you can but backup
data in but getting backup data out fast enough to meet any serious SLA?
Hmm...I would look closely into that and start with a very small POC,
that's the thing with cloud storage, you can actually do that fairly easy.

I wouldn't use cloud based storage for TSM for anything other than a
replacement for archive like data with a low retrieve rate.

If you want to get rid of tape and not invest in setting up your own
offsite setup I'm sure there are plenty of electronic-vaulting solutions
like the ones we offer you can simply plug into. Just make sure your DR
plan is compatible with these solutions. It's can get complicated, it's all
connected.



On Thu, Feb 1, 2018 at 3:27 PM, Michaud, Luc [Analyste principal -
environnement AIX] <Luc.Michaud2@stm.info> wrote:

> 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
>
>
This message was imported via the External PhorumMail Module
Stefan Folkerts
Re: Need guidance on how to protect stgpool to cloud
February 02, 2018 11:59AM
>I don't you can use cloud storage as a copypool
That was supposed to be "I don't think you can use cloud storage as a
copypool..."


On Fri, Feb 2, 2018 at 12:40 PM, Stefan Folkerts <stefan.folkerts@gmail.com>
wrote:

>
> I don't you can use cloud storage as a copypool so that would mean you are
> placing your primarypool in the cloud and limiting (in an extreme way) your
> restore performance.
>
> It is fast enough for archival purposes (if you set it up correctly and
> have enough of a local buffering pool and bandwith) and you can but backup
> data in but getting backup data out fast enough to meet any serious SLA?
> Hmm...I would look closely into that and start with a very small POC,
> that's the thing with cloud storage, you can actually do that fairly easy..
>
> I wouldn't use cloud based storage for TSM for anything other than a
> replacement for archive like data with a low retrieve rate.
>
> If you want to get rid of tape and not invest in setting up your own
> offsite setup I'm sure there are plenty of electronic-vaulting solutions
> like the ones we offer you can simply plug into. Just make sure your DR
> plan is compatible with these solutions. It's can get complicated, it's all
> connected.
>
>
>
> On Thu, Feb 1, 2018 at 3:27 PM, Michaud, Luc [Analyste principal -
> environnement AIX] <Luc.Michaud2@stm.info> wrote:
>
>> 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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