Very slow restore from DAT12/24 using cpio

[sharper]

Hello,

I'm building a replacement server for an old machine. I have installed SCO 5.05 on a CPQ Proliant 5500 with a Smart 3200 RAID controller and a Compaq Fast SCSI-2 dual channel adapter. In the new server there is a Compaq SDT-9000 12/24 DAT drive. I wanted to restore the whole backup of the old server (CPQ Proliant 1600 /Smart 2DH/Archive Python 04106) into a temporary storage area on the new server and then move the data files I wanted to keep into the correct locations on the new server. The old server was backed up using CPIO.
I started the CPIO onto the new server and it still hasn't finished after about 20 hours (backup of old server total: 5.5GB and took about 2 hours).

what could be causing this?

any ideas would be appreciated.

sharper

 

[stanhubble]

The problem will most likely be different blocking factors between the two tape devices. It will depend on what the original cpio command was on the python drive.

 

[davehunter]

Put new tape drive in old server, or old tape drive in new server, I have had the same problem when transfering data off of old servers