Re: Slow writing speed on LTO4 SAS tape

On Wed, 24 Feb 2010 10:33 +0100, [email protected] wrote:
> Just a thought:
> 
> How fast can you read from the source ?

Fast, it's a RAID with 6 disks.

> > tar --create --file /dev/st0
> > cat file > /dev/st0
> > dd if=file of=/dev/st0 bs=1M
> >
> > The best speed is with dd, around 27 MBytes/s

I also got around 26 MBytes/s with
tar --blocking-factor=2048

Still way bellow the specifications of the tape drives.

I have two drives in the tape library, I can write to one or both in
parallel. In either case, the maximum I can get is 26 MB/s
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