RE: [Veritas-bu] Tuning Netbackup

[Ambrose, Monte]

Nouresh   Without analyzing output for buffer waits from your bptm log - I have found that more buffers generally works better than bigger buffers.  Try increasing the number of buffers and decrease the size a little.   Perhaps   SIZE=65536 NUM=64   Or   SIZE=131072   NUM=32   You will notice that they all add up to the same total but it can make a big difference.   I believe that the first option above also matches the LTO3 hardware buffer size.   Monte From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of nouresh LEGACY Sent: Thursday, April 27, 2006 10:46 PM To: veritas-bu Subject: [Veritas-bu] Tuning Netbackup   What major changes I'll have to do incase the OS is Linux. The data transfer (throughput) rate is 14mb/sec. cd /usr/openv/netbackup/logs/bptm grep -i "KBytes/sec" log.* transfer rate is 18632.911 Kbytes/sec Let me explain u abt my setup: NBU 5.1 MP3 HP StorageWorks MSL 6000 HP Ultrium LTO 3 cartridges Changes made, but still struggling to get the speed. /usr/openv/netbackup/db/config/SIZE_DATA_BUFFERS = 256kb /usr/openv/netbackup/db/config/NUMBER_DATA_BUFFERS = 16 After creating these files, backup was fired at the speed of 18mb/sec. Do i have to change any directives in /etc/sysctl.conf Cheers, Nouresh