On 4/08/10 09:24 PM, Iain Sear wrote:
Hello,
We would like more access to the back end of the NAS as well. We bought
2 7110s on the basis of thier performance was very poor only to find as
soon as you attempt lots of small file actions e.g. we need to copy a
Oracle eBusiness suite code set of 500,000 very small files very
quickly.
Copyng large files resulted in excellent performance but lots of small
files resulted in very poor performance. Our Sun client manager
investigated but believes the performance we were getting was actually
slightly better than on his interal test systems. Large files => 1Gb
per sec ish Small files => 1.5Mb per sec ish.
We tested lots of different NFS mount options and different NAS raid
configurations but performance as always bad. Doing the same copy on a
SAN took a few minutes.
We therefore need a way to bypass the NFS protocol for this copy, NDMP
was just as slow in tests, SFTP only works for single files.
This leaves us with the option of Telnet + SSL with the mget command
but we havent been able to get this to work so far.
Will this NAS ever support scp or rsync? This would solve our problems,
or access to the shell without invalidating our warrenty so we could
create an OS level pipe and get a single file using sftp would also
work.
As it is we are wishing we have bought a T5220 and put disks in it so
we would have had the option for fast local access for backup and
cloning.
Iain, you bought an appliance. That means you only
get to see the front of it, not the back.
If you have issues with the performance then you should
log a support call to get these issues resolved.
James C. McPherson
--
Oracle
http://www.jmcp.homeunix.com/blog
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