[POLL] Singleinstancestore

[Bill Earle]

Jeremy,

Sorry it took so long for me to respond.


On Wed, 21 Jan 2004, Jeremy Rumpf wrote:

[snip...]

> From the TMS docs:

Thanks! I asked out TSM folks here too, they came by with the manual. :)

Slight difference, we use the backup / restore portion of TSM on
our mail servers. It has the same paragraphs as the archive. :)


[snip...]

> So if you are using SSI, it seems that TSM will work the hard link magic for
> you. And if it can't, it'll put down individual non-linked copies of the
> files. This still could also lead to the situation where a selective restore
> could end up utilizing more disk than the original files/links, but it looks
> as if TSM tries harder than most to resolve things.

Yes, it sounds like TSM will do the right thing.


> Out of curiosity, how long does TSM take to run vs. the amount of mail data
> you have? I've used TSM before, just not in this arena.

We have a total of 12 spools on 4 different backend servers. The backups
of the spools run concurrently, 3 per server, and TSM takes approx.
1 hour to backup the spools.

Here is a sample report of 1 spool.

  Reporting imap.spool.07.log
  01/22/04 23:02:38
  01/22/04 23:02:38 Total number of objects inspected: 1,099,339
  01/22/04 23:02:38 Total number of objects backed up:   25,000
  01/22/04 23:02:38 Total number of objects updated:          0
  01/22/04 23:02:38 Total number of objects rebound:          0
  01/22/04 23:02:38 Total number of objects deleted:          0
  01/22/04 23:02:38 Total number of objects expired:     15,234
  01/22/04 23:02:38 Total number of objects failed:           8
  01/22/04 23:02:38 Total number of bytes transferred: 1,014.87 MB
  01/22/04 23:02:38 Data transfer time:                  138.83 sec
  01/22/04 23:02:38 Network data transfer rate:        7,485.20 KB/sec
  01/22/04 23:02:38 Aggregate data transfer rate:        276.65 KB/sec
  01/22/04 23:02:38 Objects compressed by:                    0%
  01/22/04 23:02:38 Elapsed processing time:           01:02:36
  01/22/04:23:02:38 Dump of /ssa/imap/spool/07 completed.


- Bill