Hi Tuncel,
Here are a few options for you:
- Use in-guest backups in conjunction with the VMSKIPMAXVMDKS
- Use FCM for VMware exclusively for these large VMDKs
- Allocate 2 TB disks (or less)
As for helping us gauge interest in this...
Instead of creating a new RFE, there are a few of them out there
that you can go out and vote for to increase the priority.
https://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=45460
Del
----------------------------------------------------
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 11/13/2014
11:25:36 AM:
> From: Tuncel Mutlu (BT İşletim ve Teknik Destek Bölümü)
> <Tuncel.Mutlu AT AKBANK DOT COM>
> To: ADSM-L AT VM.MARIST DOT EDU
> Date: 11/13/2014 11:30 AM
> Subject: Re: VMWARE VMDK size limit
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> After comminicating with local and remote IBM teams, that's what I
learnt:
> - TSMVE doesn't support VMDK disks larger than 2 TB (and therefore
> cannot backup them), although VMWARE VMDK file size limit is now 64
> TB (and we already have some larger than 2 TB VMDK files). It have
> to something with snapshots.
> - There is no info or roadmap about when will this limitation be lifted
> - But if you want IBM to do it (their advise), you can open RFE
> procedure to ask for a design change http://www.ibm.com/
> developerworks/rfe/?BRAND_ID=90
>
> Before doing #3 I want to know what do you think about this.
>
> Regards,
>
> Tuncel
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf Of Tuncel Mutlu (BT Isletim ve Teknik Destek Bölümü)
> Sent: Friday, October 10, 2014 1:43 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: VMWARE VMDK size limit
>
> Hi,
>
> If I understand correctly, as of VCenter v5.5 VMWARE VMDK files size
> limit grow to 64 TB, but TDP for VMWARE has a 2 TB limit. Do you
> know when TDP for VMWARE will support bigger than 2 TB VMDK file
> size ? Because as of now we have several. I asked VMWARE admins if
> they can give less than 2 TB VMDK files and later concatenate them
> as a Dynamic disks inside the Windows, they say more VMDK files will
> increase hypervisor load, is it true ?
>
> Restriction:
>
>
> Each individual VMDK involved in a backup operation
> cannot exceed 2 TB. If a VMDK exceeds 2 TB, the backup
> operation fails. To prevent a failure, you can skip
> processing the VMDK by specifying the vmskipmaxvmdks yes
> in the Tivoli Storage Manager backup-archive client
> options file or during the dsmc invocation.
>
> So the workaround for this would be setting the option VMSKIPMAXVMDKS to
YES.
>
> Caution must be used with this option.
> With this option set, the client will not fail the backup of any
> virtual machine that has disk greater than 2TB, but will continue
> the backup, skipping the disk that is over the Tivoli Storage
> Manager supported maximum size of 2TB.
>
> See the APAR IC99953: BACKUP VM MESSAGE ANS2687W (RC6707) ON
> AUTOMATICALLY EXCLUDED INDEPENDENT OR PRDM DISKS
>
> http://www-01.ibm.com/support/docview.wss?uid=swg1IC99953
>
> Regards,
>
> Tuncel
>
>
>
>
>
>
>
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