>> On Thu, 10 Sep 2009 16:35:07 +0200, Remco Post <[email protected]> said:
> On 10 sep 2009, at 15:48, Gennadiy Khramov wrote: >> Hi, may someone tells - is any differences between TSM HSM (for >> Windows) and TSM for Space Management (for Unix) in work with >> files/filesystems? > From the perspective of the filesystem, and the user there is very > little difference. Oddly, from the perspective of TSm there is a > huge difference. Where HSM for Unix uses the HSM interface to TSM, > all windows HSM clients use TSM archiving. Search the archives for my rants on this. I think the Windows HSM product is misnamed and horrible. You'll back up new versions of your files every time a file is retrieved. You'll re-archive files every time a file is "migrated to tape". You'll re-backup files every time a file is migrated to tape: this means that your active backup copy is the stub, not the full file. Consequently, if you fotch your archive settings, the backup is no good: you'd have a backup of a stub which could have itself fallen off the end of archive retention. Way to silently lose all your data. - Allen S. Rout
