Optimum DLT/vdump blocksize parameter

From: Neil R. Smith <neils_at_csrp.tamu.edu>
Date: Fri, 27 Jun 1997 14:50:03 -0500

DEC Alpha 3000/600
DU 3.0
ADVFS file systems
vdump command

What is the optimum blocksize parameter, -b, to use with the
vdump command when writing to a DLT 2000 tape drive (15GB native)
and onboard data compression when
   a. file system is on same box as tape drive
   b. tape drive is on a remote box and vdump is
      piped to the (rsh)dd command on the tape drive box?

I pose the two different cases because perhaps the network
route (b.) imposes a bottleneck relative to the DLT streaming
tape speeds and then the block size optimization follows a different
logic.

Thanks,
-Neil

-- 
Neil R. Smith, Res. Assoc./Sys. Admin.      neils_at_csrp.tamu.edu
Dept. Meteorology, Texas A&M Univ.          409/862-4342

Received on Fri Jun 27 1997 - 22:03:51 NZST