On 12/3/2014 8:23 AM, Josh Fisher wrote:
> On 12/3/2014 8:12 AM, Daniel Pocock wrote:
>> 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)?

> ... The maximum write speed of LTO-6 is 400
> MB/s, but what is the average write speed after writing many blocks for
> a whole job? A single Lyndonville drive may suffice, or a RAID array of
> SAS drives.

Probably not so important in this case, but consider write wear on the 
SSD, too: they don't last quite so long under intensive write loads.

I sincerely doubt a tape drive can keep up with despooling off a 10Gb/s 
SAS drive, or even a 6Gb/s SATA one. (Should be a fair assessment as 
those numbers are as realistic as LTO-6's 400MB/s.)

Dima


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