Re: [Bacula-users] Bacula LTO-5
2017-06-02 07:25:49
I don't seem to have the original post of Richard Fox, so could you
please specify what "this directive" is in the sentence:
Otherwise, this advice is a little contradictory to the documentation which states
"On most modern tape drives, you will not need to specify this directive.
Best regards,
Kern
On 06/01/2017 02:51 PM, Cejka Rudolf wrote:
Richard Fox wrote (2017/06/01):
Otherwise, this advice is a little contradictory to the documentation which states
"On most modern tape drives, you will not need to specify this directive.".
Given that Linux with LTO-X tape drive is probably a majority system here (not
counting
configurations without tape drives), the statement is slightly misleading. I'm
convinced
that it is really not needed because of tape drive, server nor HBA, but it
seems that it
is really needed because of Linux. However it is not a real problem, because
Linux allows
to increase the block size "naturally", with the exception that you have
limiting HBA.
More importantly however, the documentation (for Bacula 7.2 anyways) says: "The
maximum size-in-bytes possible is 2,000,000." which contradicts the assertion that
these can be specified as 2MB which is not the same thing. Is the documentation
inaccurate on this subject?
I wrote 2 MB as a general recommendation over various manufacturers and software
developers, with non-written suggested value 256 KB or 512 KB as max., so please
take my 2 MB limit just loosely :o)
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