[vox-tech] RAID systems

[Jan W]

Hi all:

I just finished setting up 3 tb raid systems, and I have some general
questions about raid:

1.  What are the best methods to get benchmarks for speed/timing?

2.  What are the best recovery tools in case of failure?

3.  What filesystem/raid options work best for lots of small files
being written often?

Here is the setup I have now:

2.6 kernel (fedora core)
mdadm for managing metadevice
raid 5 -- default 64k chunk size
SATA for all raid drives
ext3 fs with -- extra inodes for lotsa little files and -- 4k block
size with a stride of 16 so that it matches the raid chunk size

Any and all comments are welcome, I just need to get a better idea of
what people are using for their production systems (and how the tools
are used).  I don't need anything special, just a rock-solid file
server used by everyday production systems.

I feel pretty good about what I've done already, but TBs of data makes
me wince, especially if the data is expensive and/or irreplacable. 
Dealing with that sorta stuff makes me want to make extra-specially
doubly sure that all my duckies are in rows...

--thanks much

jan

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