Hello...

  I have a new Dell ML6000 / ADIC Scalar i500 with a LTO-4 tape drive.  I am 
running  amanda 2.5.2p1 on RHEL5 x86_64.  It works great except for one thing.  
I am only getting 1/10 the possible write speed.  I get about 40G per hour, or 
about 11-12 MB/sec ( measured by doing the math and running iostat while 
flushing).

shell> iostat -m 10 /dev/sdaa
Device:            tps    MB_read/s    MB_wrtn/s    MB_read    MB_wrtn
sdaa             96.40        11.56         0.00        115          0
sdaa             97.21        11.51         0.00        115          0

>From the tape specs, I should be able to get 120MB/sec.


After searching the archives, I added "--with-maxtapeblocksize=4096" to the 
config args, but amanda cannot read/write any tapes at all then.  What is the 
correct value to pass?  With X? With Xkb?  --with-maxtapeblocksize=4096 ? 
--with-maxtapeblocksize=1024kb?  --with-maxtapeblocksize=other ?

thanks



-- 
Christopher McCrory
 "The guy that keeps the servers running"

To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is twice as big as it needs to be.