Well I think an individule file needs to be contained with in an agragate.
Therefore the max size file TSM server could handel would be the max
addressable size of a single agragate. I am not certain what that size
limit is. However that does rase an interesting scenario. We know that
an agragate can not span across multipal physical volumes. So say you
have an 10 GB 4mm device, and the file you are backing up is 15GB. That
would make it impossable for that file to be backed up because the media
is unable to contain the whole agragated transfer. Of cource this is
shooting off the hip hypothisis, and I could be completly mistaken.
Keith Davey
On Wed, 20 Dec 2000, sekar n wrote:
> Hi KD ,
> thanks. It now looks that the maximum file size which
> tsm can could handle would be limited only by the
> individual volume size! . I believe it could be
> endlessly increased if the volume happens to be a disk
> under volume management of AIX or any such product.
>
> sekar narasimhan
>
> --- Keith Davey <kdavey AT GUS33.HOMEIP DOT NET> wrote:
> > To the best of my knowlege TSM does not have a 2GB
> > file size limit for
> > storing the file. The problem comes in at the OS
> > filesystemlevel.
> > Solaris UFS filesystems have this limitation, as did
> > AIX 4.1. 4.2 could
> > be set up to support large file sizes in SMIT, and I
> > beleve 4.3 supports
> > it nativly. Linux also has this problem.
> >
> > If the individual file exceeds the MAX file size
> > that can be sent to a
> > storage pool, it is automaticly sent directly to its
> > next storage pool
> > (usualy tape). If a client is backing up directly
> > to tape, and the end of
> > file mark is reached prior to the end of the
> > agragate transfer, then that
> > agragate is expired, and a new tape is mounted. AKA
> > an Agragate can not
> > be split between two volumes.
> >
> > Keith Davey
> > Tivoli Systems
> >
> >
> > On Wed, 20 Dec 2000, sekar n wrote:
> >
> > > Hi all,
> > > Iam aware of some limitations on AIX/solaris for
> > > individual filesize > 2 GB. What about TSM. Also
> > what
> > > happens when an individual file size exceeds the
> > > physcial limit of pool volume. Does any
> > fragmentation
> > > take place !!
> > >
> > > sekar narasimhan
> > > Chennai, India
> > > mail: nsekar99 AT yahoo DOT com
> > >
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