Optiplex 755

NS1 has been upgraded to an Optiplex 755 Core2-Duo 3GHz.
It has 5x SATA ports on the motherboard, but does not support Port Multipliers properly.
It sees the drives, but there are hangs, lags, etc all the time. 6MB/sec aggregate isn’t okay.

I didn’t want to use my PCI-32 SIL-3124, mostly for performance reasons.
I have a 1x SIL3132, and found the drive enclosure works fine on port 0, but LILO gives L 01 01 01 01 01 etc if I use port 1.
This is pulling 102MB/sec sequential from a 5-way mirror, and 124MB/sec from a 5-way RAID6.
Compare to the 3124 which topped out about 50MB/sec regardless of which slice I abused.

In theory I could just cable all of the drives up to individual ports, and the performance would likely be slightly better.
Unfortunately, I’d need to pull the optical drive, and install a 2-3 bay converter.
I didn’t want to spend MORE money, because if I did, I’d probably just start buying 2.5″ drives, or other things I didn’t need.
[http://www.newegg.com/Product/Product.aspx?Item=N82E16816124064 1] [http://www.newegg.com/Product/Product.aspx?Item=N82E16816124062 2] [http://www.newegg.com/Product/Product.aspx?Item=N82E16816133030 3] [http://www.newegg.com/Product/Product.aspx?Item=N82E16817998144 4] [http://www.newegg.com/Product/Product.aspx?Item=N82E16817994028 5] [http://www.newegg.com/Product/Product.aspx?Item=N82E16822236348 6]
[http://www.newegg.com/Product/Product.aspx?Item=N82E16822145848 7] [http://www.newegg.com/Product/Product.aspx?Item=N82E16817998144 8] (plus cables, brackets, etc)

Anyway, I’ve bumped up to a 64-bit kernel, and may be swinging to a 64-bit OS if I feel particularly frisky.
http://www.v13.gr/blog/?p=11 – http://wiki.debian.org/Migrate32To64Bit

My goal would be to install SDFS (open dedupe), mhVTL (Linux VTL, now with iSCSI support) and see how they’re doing vs 2007.
http://code.google.com/p/opendedup/ – http://opendedup.org/
https://sites.google.com/site/linuxvtl2/ – http://stgt.sourceforge.net/

Comments are closed.