Can anybody make any practical comments on how to choose a suitable
spool disk (both speed, size and whether to make an array of disks for
spooling)?

It would be useful to see some examples of spooling for LTO-3 up to
LTO-6 and also any comments about things to avoid

For example, if somebody uses LTO-3 (400GB, supporting 60 - 80MB/sec)
will a single SSD sustain the necessary speed de-spooling to tape or
should multiple SSDs be used in RAID0 or RAID1?  Is it feasible for
clients to be spooling more jobs to the same disk simultaneously while
the tape drive is reading from it?


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