On Thu, 19 Jan 2023, Galen Seitz wrote:
Purely out of curiosity, what kind of tapes drives are you using,
and what type of interface is used to connect them?
We're using a mix of LTO-6 and LTO-7 tapes in a Quantum library
with four IBM Ultrium-TD7 drives. The drives are connected to the
backup server via an Emulex fibre channel HBA. Does that answer
your question?
Yes, thanks. I have old DLT IV drives here, and it was tricky to
keep them streaming. Getting an LTO-7 (300 MB/s raw, up to 750 MB/s
compressed) seems like quite the feat. Stage it all to an SSD?
We do spool to disk prior to writing to tape, but we use a ZFS-managed
array of spinning platters rather than SSDs. Backup work typically
involves a lot of sequential reading and writing, and traditional hard
drives handle that work load just fine for our purposes.
We do use SSDs to host the postgresql database Bacula uses to manage
its metadata.
--
Paul Heinlein
[email protected]
45°22'48" N, 122°35'36" W
