So here's an interesting issue I thought I'd run by the mailing list.

Master Server = Sun E250 (NBU 3.4_3)
Media Server = GS80 running Tru64 (NBU 3.4_3)
STK L80 with (8) DLT8000 direct SCSI attach (3 meter cables)

The media server is backing up raw devices to tape but I'm getting strange
performance numbers.  When I backup a brand new raw device without any data
on it (i.e., just added to the system) my throughput is great, around
12.5MB/sec to tape.  But once I actually use this device (pull it into a
disk group and plop a filesystem on it with data) my throughput for backing
up this raw device drops to around 5.5MB/sec to tape.  This is happening for
all the disks.

Maybe I'm missing something here but I thought a raw device was a raw device
regardless of the data on it?  Anyone seen this kind of behavior before?
Thanks.

-Dave