On 5/17/23 14:14, Phil Stracchino wrote:
On 5/17/23 12:52, Marco Gaiarin wrote:
I've LTO tape that work in very dusty environment by at least 6 years.
Istead of dust, i've found that setting properly spooling and buffers
prevent the spinup/spindown effect, that effectively can be very
stressful...
Yes, I went to great lengths to try to keep mine streaming and avoid
shoe-shining, but with only moderate success.
I have had many fewer problems, as well as much better performance,
since I abandoned tape and went to disk-to-disk-to-removable-disk
(with both of the destination disk stages being RAID). Full backup
cycles that used to take 18 hours and two or three media changes, with
about a 10% failure rate due to media errors, now take 3 or 4 hours
with no media changes and nearly 100% success.
However, we are getting further and further off the subject of
compression.
That approach actually affects both tape and disk. Software compression
happens on the client, so performance greatly depends on the type of
clients being backed up. For example, there may be NAS boxes with low
power processors, Software compression will definitely slow the backup
of such clients.
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