Ok, I got what you said about file level and volume copy, so both type of restores (fast restore / instant restore) can happen in just a minute or two? and only difference about it is the calls? Fast restore uses S.O system call and instant restore uses Flashcopy?
Atenciosamente, Vinicius do Valle Fraga Engenheiro de Sistemas VANguard - Value Added Network guardians http://www.vanguard-it.com.br Fone: 55 11 5103-0941 -----Mensagem original----- De: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] Em nome de Del Hoobler Enviada em: Monday, September 17, 2007 3:34 PM Para: [email protected] Assunto: Re: [ADSM-L] TSM for Copy Services Vinicius, For "VSS Fast Restore", TSM will restore the Exchange database and log files by copying them from the local VSS shadow copy using operating system "file-level copy" system calls. For "VSS Instant Restore", TSM will use "volume-level copy" to restore the Exchange database and log files. In the TSM case, it uses IBM "FlashCopy". These types of restores can happen in just a minute or two, even for hundreds of Gigabytes of data. That is because once the Flashcopy is established, the Exchange Server can start using the volumes almost immediately. You are correct that the "VSS Instant Restore" is only currently available for SVC, DS6000, and DS8000. That is because Microsoft does not offer a generic way to perform a "volume-level copy" within the VSS infrastructure, therefore, the TSM code talks directly to the hardware to perform the volume-level copy (FlashCopy). I hope this helps. Thanks, Del ---------------------------------------------------- "ADSM: Dist Stor Manager" <[email protected]> wrote on 09/17/2007 02:09:37 PM: > Hi guys, > > > > Tomorrow I have one presentation to do in a client about TSM for Copy > Services, and I really need some help to say the difference about the > "instant restore using replication" and the "Fast Restore via Filecopy". > > > > The option of instant restore is only available for IBM (SVC, DS6000 and > DS8000), so what is the competitive advantage? On the power point that I > have it's only saying that it's not part of MS Exchange backup > interface.
