> Would it be possible to give main advantages and disadvantages for two 
> different ways of backup/restore for VMs:
> 1)     TSM + VCB based on "dsmc backup vm";
> 2)     TSM + TBMR on each VM with direct backups to TSM Server.





> 1) using VCB you take off the load from the ESX server (VCB proxy sends the 
> data to TSM, ESX just creates the snapshot)



I am sorry, but I do not understand, how it is possible take off load from ESX 
server. After creating snapshot you still need to read full image or some files 
and send to proxy.  Almost the same is with normal TSM backups excluding load, 
created by TSM Client. Maybe I am wrong, but I really do not understand why?



> 2) Using TMBR in each VM - question is why to do that. In virtualized 
> environments you do not need to think about dissimilar HW so TSM based image 
> backups can help you with DR (speaking of Windows world).

> Running all VM backups concurrently can be very stressful to the ESX host.



It depends on nature of applications (24/7 or just working hours) and it is a 
matter of correct scheduling to avoid overlapped backups for VMs.





Grigori G. Solonovitch



Senior Technical Architect



Information Technology  Ahli United Bank Kuwait http://www.ahliunited.com.kw



Phone: (+965) 2231-2274  Mobile: (+965) 99798073  E-Mail: Grigori.Solonovitch 
AT ahliunited DOT com



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