According to this:
http://www-01.ibm.com/support/docview.wss?uid=swg21641914&myns=swgtiv&mynp=OCSS8TDQ&mync=E
TSM4VE backs up the whole disk. And that's been my experience.
Steve
STEPHEN STACKWICK | Senior Consultant | 301.518.6352 (m) | Stephen.Stackwick AT
icfi DOT com | icfi.com
ICF INTERNATIONAL | 410 E. Pratt Street Suite 2214, Baltimore, MD 21202 |
410.539.1135 (o)
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Robert Ouzen
> Sent: Monday, July 08, 2013 8:58 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] FW: [ADSM-L] Should CBT be enabled before using TSM for
> VE to save space?
>
> Hi Wanda
>
> No quite sure at least in Vsphere 5 (maybe Vsphere 5.1) , I always check
> with the
> command: dsmc show VM all and the parameter : changeTracking: Off
>
> About the first backup will take only the USED space , at least in my
> environment
> some machines works fine but some others backup the ALL space !!!
>
> Best Regards
>
> Robert
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Prather, Wanda
> Sent: Monday, July 08, 2013 3:47 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Should CBT be enabled before using TSM for VE to save
> space?
>
> If your VM's were created in VSphere 5, CBT will be on by default.
>
> My understanding is that either way (starting with CBT on or off), you should
> only get USED space on the first backup.
>
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Michael Roesch
> Sent: Monday, July 08, 2013 4:29 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] Should CBT be enabled before using TSM for VE to save
> space?
>
> Hi there,
>
> I've read here http://www-01.ibm.com/support/docview.wss?uid=swg21608413
> that TSM for VE is using "content-aware" backup, if CBT is enabled. It also
> says
> that TSM for VE will enable CBT after the first backup.
>
> So I'm wondering if enabling CBT before performing the first backup would
> make TSM for VE backup only the used blocks (i.e. used space) and hence would
> save space on the storage pool?
>
> Or would TSM for VE still backup the full VMDK, including possible lots of
> unused
> space inside it on the first backup?
>
> Regards,
> Michael
|