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ddavis

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Kerio mail sever has been a stable, well behaved product for us but seems to suffer still from speed of use. It is installed on an HP DL380 G5 with the OS mirrored on one set of drives and the mail store in raid 5 on another, all on SAS drives. It is defragged with diskeeper twice a day. There is something like 200 users hitting the server during the day and maybe 80 at night. I'd say it runs ok, but I'm always looking for better performance.
I've come across a product called RamDisk Plus, which lets you create a ram dive with your physical memory.
I wonder if there would any performance gain in reinstalling Kerio mail server on a "ram drive"?

I feel the need for speed.......
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hvdholst

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I had a similar setup and had speed issues. I moved the mail store to a raid 1+0 set and that improved write speed almost 10 times. I understand that the write speed is the most important factor for the speed of Kerio Mailserver.
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ddavis

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After mirroring the OS and having an online spare I have four 72 gig SAS drives left.. 1 for parity, leaving just about 200g of formated space for the mail store/backups. I wish I'd have gone raid 10. Did that for our Terminial Server... having two sets of three stripped drives and mirroring them, then hot spare and offline spare...
Kerio only seems slow to login, but once in it seems fine.
Just looking for that magic bullet.
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elias

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Which Smart Array controller are you using? I'm guessing you're using a P400, and if so, did you buy the battery-backed write cache module? If you didn't, that's an option that could make a significant difference, especially with RAID 5.

If you already have that and you're sure its enabled, then there's probably no magic bullet outside of rebuilding with RAID 10.

-Elias
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