In the 7.3 client and above, you will find /usr/sbin/tape_perf_test
which is a tool to systematically try out different block sizes with
different types of data..
It takes a long time to run , but on my sol10/ultra10 test box it worked
out that 384k was the best all round for DLT8000... Roughly 11MB/sec,
which shows just how old DLT8000 is getting...
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT listserv.temple DOT edu]
On Behalf Of Evgeni Mironov
Sent: Saturday, 17 June 2006 1:17 AM
To: NETWORKER AT listserv.temple DOT edu
Subject: [Networker] Default for NSR_DEV_TAPE_FILE_SIZE parameter
Hi.
I have NW 7.2.1, Solaris 10 sparc64, Quantum DLT8000 drive.
Tape Block size is 128k.
How to obtain default value of NSR_DEV_TAPE_FILE_SIZE parameter?
I need to speedup backups and want to try different block sizes and
tape_file_size values.
Thanks...
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