I am really not that familiar with dedupe products yet and I guess there's a
lot of differences between them. At an Avamar presentation they claimed dedup
ratio in the houndreds for file data especially Office files and such since the
dedup algorithm was application sensitive. When I asked what to expect with
Oracle, I did not get a definitive answer more like "It may or may not work".
When marketing says this, my first thought is that Avamar/Oracle don't play
well together.
Hans Chr.
________________________________
Fra: ADSM: Dist Stor Manager på vegne av Henrik Vahlstedt
Sendt: to 17.04.2008 15:07
Til: ADSM-L AT VM.MARIST DOT EDU
Emne: What to dedup.. was "TSM being abandoned?"
Hi,
Isnt dedup most beneficial at deduplicating databses ex. Oracle and
Domino etc...? No pre-compression or encryption.
Even Data Domain dedup thoose types av data pretty well.
But I tend to agree with your opinion about performance.
//Henrik
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Hans Christian Riksheim
Sent: den 17 april 2008 14:32
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM being abandoned?
We look at dedup VTL as a possible target for active storage pools
containing ordinary file backup. This way we don't risk very much if the
VTL breaks or the VTL's dedup index goes corrupt. I am a little
sceptical about the robustness of these products so I will not let these
VTL's play a too significant role in our setup. My sceptisism may of
course be totally unfounded.
For TDP-data which are written and read in large sequential chunks, tape
is just fine performance and cost wise. From what I have heard, it can
be hard to obtain any decent dedup compression for Oracle with dedup
VTLs and the performance is questionable.
Best regards
Hans Chr.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Orin Rehorst
Sent: Wednesday, April 16, 2008 4:13 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: TSM being abandoned?
A VTL vendor said he is seeing a number of mid-sized businesses
migrating from TSM to NBU (Symantec). Do you think this is true? My
concern is that the pool of support techs will shrink and put us in a
bind.
Regards,
Orin
Orin Rehorst
Port of Houston
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