Hi,
maybe a year ago I asked the same question and of of TSM programmers responded
that this vere not a complicated technical issue but the developers would need
an official requirement for it in order to do it.
I was too lazy and / or busy to open an official requirement.
best regards
Juraj Salak
> -----Ursprüngliche Nachricht-----
> Von: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] Im
> Auftrag von Rushforth, Tim
> Gesendet: Montag, 20. Dezember 2004 18:24
> An: ADSM-L AT VM.MARIST DOT EDU
> Betreff: Sub-File Backup - 2 GB Limit
>
> Hi:
>
>
>
> Just curious if anyone knows if this limit has changed or
> will change in the future?
>
> We have some users asking about it.
>
>
>
> Thanks,
>
>
>
> Tim Rushforth
>
> City of Winnipeg
>
>
>
>
>
> Forum: ADSM.ORG - ADSM / TSM Mailing List Archive
> Date: 2003, Jan 06
> From: Jim Smith <nobody at nowhere.com
> <mailto:nobody%20at%20nowhere.com> >
>
> Tim,
>
> Actually, two different behaviors based on two-different problems.
> Files
> that start less then 2 GB but grow > 2 GB will continue to
> use subfile backup as long as the other requirements for the
> base file (i.e., the file on the client cache) is still
> valid. The limiting factor here is that there is only 32-bit
> support in the differencing subsystem that we are using. We
> chose 2 GB on the onset (instead of 4 GB) as the limit to
> avoid any possible boundary problems near the 32-bit
> addressing limit and also because this technology was aimed
> at the mobile market (read: who is going to have files on
> their laptops > 2 GB). I understand that there are several
> shops that use this technology beyond the laptop environment.
> Ultimately, the solution is to have a 64-bit subsystem in
> place so that we can go beyond 4 GB. I suggest a requirement
> to Tivoli if this is important to your shop.
>
> The low-end limit (1024 bytes) was due to some strange
> behavior with really small files, e.g., if a file started out
> at 5 k and then was truncated to 8 bytes. The solution was
> to just send the entire file if the file fell below the 1k
> threshold. We can get away with resending these small files
> because ... they are small files! It is probably a wash to
> resend or to try to correctly send a delta file in this case.
>
> Hope this helps.
>
> - Jim
>
> J.P. (Jim) Smith
> TSM Client Development
> smithjp AT us.ibm DOT com <mailto:smithjp%20AT%20us.ibm%20DOT%20com>
>
>
>
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