I'm not sure, but I suspect that IBM is more willing to use better special-bid
pricing to a customer who is using both TSM and ProtecTier. I.e., it's a
matter of negotiation, not rigid rules about how to measure occupancy. I don't
think there is anything in the occupancy calculation algorithm to compensate
for ProtecTier deduplication. Perhaps an IBMer or Business Partner who is
monitoring this list could chime in on this?
At 06:21 AM 7/26/2013, Steven Langdale wrote:
>Hello Stefan
>
>Have you got cases of this? I ask because I have been specifically told by
>our rep that any dedupe saving for capacity licensing is TSM dedupe only,
>regarless of the backend storage.
>
>
>
>On 26 July 2013 09:16, Stefan Folkerts <stefan.folkerts AT gmail DOT com>
>wrote:
>
>> No, this is correct, IBM does give Protectier (for example) customers an
>> advantage with deduplication and factor in the dedup for billing.
>>
>>
>> On Wed, Jul 24, 2013 at 10:18 PM, Colwell, William F.
>> <bcolwell AT draper DOT com>wrote:
>>
>> > Hi Norman,
>> >
>> > that is incorrect. IBM doesn't care what the hardware is when measuring
>> > used capacity
>> > in the Suite for Unified Recovery licensing model.
>> >
>> > A description of the measurement process and the sql to do it is at
>> > http://www-01.ibm.com/support/docview.wss?uid=swg21500482
>> >
>> > Thanks,
>> >
>> > Bill Colwell
>> > Draper Lab
>> >
>> > -----Original Message-----
>> > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
>> > Behalf Of
>> > Gee, Norman
>> > Sent: Wednesday, July 24, 2013 11:29 AM
>> > To: ADSM-L AT VM.MARIST DOT EDU
>> > Subject: Re: Deduplication/replication options
>> >
>> > This why IBM is pushing their VTL solution. IBM will only charge for the
>> > net amount using an all IBM solution. At least that is what I was told.
>> >
>> > -----Original Message-----
>> > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
>> > Behalf Of
>> > Loon, EJ van - SPLXM
>> > Sent: Tuesday, July 23, 2013 11:59 PM
>> > To: ADSM-L AT VM.MARIST DOT EDU
>> > Subject: Re: Deduplication/replication options
>> >
>> > Hi Sergio!
>> > Another thing to take into consideration: if you have switched from PVU
>> > licensing to sub-capacity licensing in the past: TSM sub-capacity
>> > licensing is based on the amount of data stored in your primary pool. If
>> > this data is stored on a de-duplicating storage device you will be
>> > charged for the gross amount of data. If you are using TSM
>> > de-duplication you will have to pay for the de-duplicated amount. This
>> > will probably save you a lot of money...
>> > Kind regards,
>> > Eric van Loon
>> > AF/KLM Storage Engineering
>> >
>> > -----Original Message-----
>> > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
>> > Behalf Of
>> > Sergio O. Fuentes
>> > Sent: dinsdag 23 juli 2013 19:20
>> > To: ADSM-L AT VM.MARIST DOT EDU
>> > Subject: Deduplication/replication options
>> >
>> > Hello all,
>> >
>> > We're currently faced with a decision go with a dedupe storage array or
>> > with TSM dedupe for our backup storage targets. There are some very
>> > critical pros and cons going with one or the other. For example, TSM
>> > dedupe will reduce overall network throughput both for backups and
>> > replication (source-side dedupe would be used). A dedupe storage array
>> > won't do that for backup, but it would be possible if we replicated to
>> > an identical array (but TSM replication would be bandwidth intensive).
>> > TSM dedupe might not scale as well and may neccessitate more TSM servers
>> > to distribute the load. Overall, though, I think the cost of additional
>> > servers is way less than what a native dedupe array would cost so I
>> > don't think that's a big hit.
>> >
>> > Replication is key. We have two datacenters where I would love it if TSM
>> > replication could be used in order to quickly (still manually, though)
>> > activate the replication server for production if necessary. Having a
>> > dedupe storage array kind of removes that option, unless we want to
>> > replicate the whole rehydrated backup data via TSM.
>> >
>> > I'm going on and on here, but has anybody had to make a decision to go
>> > one way or the other? Would it make sense to do a hybrid deployment
>> > (combination of TSM Dedupe and Array dedupe)? Any thoughts or tales of
>> > woes and forewarnings are appreciated.
>> >
>> > Thanks!
>> > Sergio
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--
Paul Zarnowski Ph: 607-255-4757
Manager of Storage Services Fx: 607-255-8521
IT at Cornell / Infrastructure Em: psz1 AT cornell DOT edu
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