Re: Clone tool
Date: Sat, 23 Apr 2016 16:27:32 -0600
Message-ID: <b2a80451-b585-9a29-ebc9-0b7ecf579344_at_evdbt.com>
To get closer to a useful answer, how about if instead we just discuss a specific scenario? Let's start with a scenario similar to that the original poster had posed?
Let's say someone has a 10 TB production database from which they want to create 10 non-production databases for development, testing, training, etc.
Here's the first question: how much storage must be provisioned to the non-production target server(s) to accommodate the 10 new databases?
Here are some answers that I can provide confidently...
- Using RMAN DUPLICATE TARGET DATABASE, they need 100 TB for the target server(s)
- Using Delphix, they need 10 TB for the Delphix appliance and 0 TB for the target server(s), totaling 10 TB
I'm not certain how much storage would be needed using solutions from CommVault, NetBackup, TSM, Actifio, Oracle Snapclone, Oracle12c PDB clone, Exadata, and other solutions, because I am not as familiar with them, so I'm hoping others will fill in?
On 4/23/16 10:56, Mladen Gogala wrote:
> On 04/23/2016 12:13 PM, Andrew Kerber wrote:
>> I don't have a dog in this fight, but frankly Commvault and Delphix
>> are two different solutions to two different problems. I know of
>> several places that use both. Commvault is a backup solution, Delphix
>> is a cloning and masking solution.
>
> Hi Andrew,
> Cloning is done by storage snapshots. I reacted because Commvault can
> do cloning and does it for supported storage for a long time. Data
> masking is something that Commvault doesn't do, that is true.
> In the modern world, the notion of what exactly is backup is blurred.
> I must say that Oracle has been very slow with adopting snapshots for
> backup purposes. IBM, for instance, has ACS (advanced copy services)
> which does support taking snapshots. RMAN doesn't support storage
> snapshots. So, "traditional" backup solutions like Commvault,
> NetBackup and TSM are all doing the same thing as Delphix and
> ActifIO, when it comes to using storage snapshots to clone a DB. Of
> course, as is the case with many modern trends in the IT, there is a
> flood of buzzwords: "virtualization", "data as a service" (my
> particular favorite) , "infrastructure as a service", "software as a
> service" and many more.
> Delphix positions itself as a new way of doing backup and has somewhat
> privileged position on this list. It is heavily promoted by what I
> consider a pure and unadulterated marketing. I didn't react until
> there was too much of "Delphix is web-scale" message for my taste on
> this group.
> Regards
>
>
> --
> Mladen Gogala
> Oracle DBA
> http://mgogala.freehostia.com
-- http://www.freelists.org/webpage/oracle-lReceived on Sun Apr 24 2016 - 00:27:32 CEST