Mounting new drives

[Drakkon]

I have a server setup with Ubuntu 7.04 and LAMP installed with webmin
This is my first attempt at it so far and I've gotten to where everything is working but i wanted to move my web directory and mysql db to a separate 500GB RAID array in the machine.

For some reason whenever i go to mount/fs the drives it shows up as the 4 drives instead of as the RAID array. i assumed since it was a hardware array on a Fastrack150 card everything would be cool (it seems to see the pci card and isntalled drives for it as the drives attached are appearing in devices). So question is why is my install seeing these as 4 250gb drives and how would i get them to a point where they could be mounted?

 

[Brazen]

The Fastrack 150 is a software raid card (fakeraid), not hardware raid. The Raid is actually implemented within the drivers that are available for Windows. On linux, you will use the mdraid built into the linux kernel (this is much better than what you would get if the raid was built into the fastrack drivers on linux).

You should go back into your Fastrack's firmware and disable the Raid functionality so it is just in ide mode or ata mode, or whatever Promise calls it. Then go to the hardware tab in webmin, choose "Partitions on Local Disks" and create a "Linux RAID" partition on each of the four disks. Then back on the hardware tab, go to "Linux RAID" and create a new raid device. You can then partition that raid device just like a physical drive - put LVM on it or just a regular partition or several partitions.

 

[Drakkon]

doh...thats what i get for assuming that fastrack card was a real RAID card

i get it now though. Thanks!

 

[Brazen]

meh, we use the best of LSI and Adaptec hardware raid cards here, and even though it's beneficial to offload the processing, nothing beats the features and flexibility of Linux RAID + LVM. And all the benchmarks I've seen or heard of show that linux raid has very little performance difference from true hardware raid and has better performance than the Windows driver-based software raid.