On 9/17/2019 2:08 PM, Phil Stracchino wrote:
... Oh, and also,
anything USB need not apply. Too slow. I do have a perfectly good SAS
controller available.
I suspect you have used USB drives in the past and found them far too
slow, but I suggest you revisit that. Newer USB drives are not fast, but
they are faster than they once were. I see around 120 MB/s write speeds.
For my purposes, they are good enough for my off-site backups.
There are some advantages with USB as a medium for off-site backups:
- They do NOT require a good SAS controller and can be used on
pretty much anything that can run Bacula
- They are cheap
- Unlike SATA/SAS HDs, they are designed for portability,
shock-resistance, etc., making them suitable for transport
- With vchanger, they can be used in parallel and size can be
scaled very easily
- USB maintains backward-compatibility for many years
Also, when USB 3.2 SSD is cheap enough, the change of medium requires
zero changes to my setup. Current USB 3.1 SSD drives have > 200 MB/s
write speeds and > 500 MB/s read, so I expect my off-site backup speeds
to at least double in the next couple of years.
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