Robinson, Greg wrote: > UNCLASSIFIED > > Hello all, > > I am after some recommendations of volume sizes. I have set my own > limit for $work, but have been asked to justify the limit with > whitepapers etc. I cannot find any as the usual response is whatever > suits your organisation. > > What volume sizes do you run, and do you have any trouble meeting your > backup window? > > I have set our limit to 1TB in a single volume, and even that might be > too big. > > Thankx, > > > I don't think there's an easy, straight answer to this. It really depends on the size of the files, the rate of change, and even on the filesystem being used to some extent. We have 10TB volumes but the rate of change isn't all that high, and the file size (lately) is quite large, so it's relatively easy to keep all of these backed up. We also use zfs for continuous snapshots to another server. On the other hand, since we have 100s of millions of files, if we had to have a traditional backup that did a file system recursive based upon mtime, we'd be sunk. It would take probably days if all of the files were in one filesystem on one file server. We also have them distributed at this time.
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