> I have been doing backups to external USB 2 disks for about a year or so
> (storage server is a Linux box). It works well enough most of the time,
> but those disks are very slow (it can manage about 20 MB/sec with a
> trailing wind) and have a tendency to fragility. I also use spooling, with
> the spool on SCSI drives; one of the situations where the combination of
> spooling and backup to disk seems to make sense. I'm planning on replacing
> the USB disks (there are seven of them, 1 TB each) with a SATA shelf with
> RAID 5 or 6. I would suggest avoiding USB.
>

You might want to just open the removable usb cases and use the SATA
drives in a software linux raid 5 or 6 and just put them in a desktop
machine that has plenty of motherboard SATA ports. At work I build
such a machine for less than $900US minus the hard drives for 5 TB
servers.

John

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