Pathetic SATA Raid performance

[Bill Buchanan]

You should check each drive with Iometer. It’s very likely one or more of the drives in your array is excessively slow, and that will gum up the works, which includes getting inconsistent speed readings. Had a similar problem, and that’s what it turned out to be. Replaced the slow drives; problem cured.

Bill Buchanan
Buchanan Film Co.

[Terry Raby]

Make sure disk speed is installed on the raid you are testing

[Matthew Beall]

I don’t know how the internal bios of your adapter is made of, but check if cache memory for read and write of the hard drive (and may be the adapter) are not turned off. Sometimes with factory settings it could be, to prevent data lost in case of power failure.

Bingo!

I talked to tech support and they stepped me through checking the settings for each drive.. Everything was deactivated and in a default state.. Activating Read/Write cache for each drive now gives me 250Mb/s read and write!

Excellent!

Thank you all so much for your help, good to know others are out there to listen..

-Matthew

[Bob Zelin]

I never would have guessed that in a million years ! As this thread progressed, I was thinking too that one of the drives was bad. I guess the moral of the story is – when you get unexpected performance from your Highpoint product – call tech support right away.

Thanks for reporting this.

Bob Zelin