I'm dumping much larger DLEs (routinely 300-600GB, some in the direction of 1TB), but I'm doing it
to LTO-7 and LTO-6 with holding "disks" that are paired server grade SSDs at 4TB (two for the LTO-7)
and 1TB (two for the LTO-6).
I wouldn't do direct to tape, because that basically blocks the parallel processing of dumping and
taping that is enabled by having sizeable holding disk space. Dump to tape does have more issues,
because the tar is piped to gzip (if you are using software compression) which is piped to the tape.
If you use a holding disk, the Amanda uses dd to copy data directly from holding disk to tape.
On 6/12/19 4:20 PM, ghe wrote:
Is there some kind of size limit to DLEs?
I've been trying to back up some 150+G DLEs. They're being dumped to
tape (LTO-5). In the middle of the backup, amanda says (I don't have the
exact error notice anymore) that it can't continue and terminates the
backup.
When I ask tar to write the dir to tape, it does so with no trouble.
When I changed the the disklist from dump-to-tape (nohold?) to high-tar
(1T holding disk), it did the backup without trouble.
Or is dump-to-tape bent somehow?
--
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Chris Hoogendyk
-
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geosciences Departments
(*) \(*) -- 315 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<[email protected]>
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Erdös 4
