Interesting you mention the raid.reconstruct.perf_impact setting - I was a little confused about its real meaning...

I thought (as you mentioned) that setting it to 'high' would increase the reconstruct speed. I then used the filerview web interface to go in and change the raid reconstruct speed to 'high' and it actually set this value to 'low' - the web tool seems to set it to the inverse of what you'd expect. (setting 'low' on the web interface sets this option to 'high' etc.)

So I was a little curious as to if the setting had a different meaning than the one you (and I) initially thought it meant. (eg: perhaps it's meaning impact on reconstruct speed rather than system performance, so 'low' means the least affect on reconstruct speed and therefore the most impact on system performance) I left it at 'low' since I figured the web interface probably knew the meaning of the option a little more than I did...

Simon.

-----Original Message----- From: Hill, Aaron [mailto:aaron.hill@cba.com.au] Sent: Friday, September 10, 2004 1:53 AM To: Simon Ferrett; toasters@mathworks.com Subject: RE: New Simplified Monitoring Tool

Simon, I don't know if you can directly increase the no. of simultaneous reconstructs. However, you may be able to improve the speed marginally by using the raid.reconstruct.perf_impact option and setting to high. However, if your cpu's are already maxxed it probably won't make a lick of difference.

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