Todd Cary todd@aristesoftware.com wrote:
Byron - Thank you for taking the time to explain my onboard RAID configuration. I use RAID 1 (mirrored) on my home office server(s).
I use RAID-1 and RAID-10, and RAID-5 on occassion. I use $125 3Ware Escalade 7006-2 (ATA) and 8006-2 (SATA) cards for 2-channel RAID-1, and various 8506-4/8/12 cards for RAID-10 and, limitedly, RAID-5.
I've even found pulls for under $50-75 at times.
For background information, my job over the years is creating DB programs using Delphi for my client and some PHP Web sites.
Given the critical nature of your data, I would recommend expending the small amount of money for 3Ware solutions.
My client does the administration of about 75% of class action lawsuites. As such, my experience is limited at the OS level; I just install it and then use the LAMP features as well as FTP. This results in my feeling like I am driving a one ton pickup alongside an 18 wheeler!
The great thing about 3Ware is that *0* additional configuration is required. At most you need to update your firmare to the latest for the 7000/8000 series if it's not already so. The newer 9000 series even includes firmware as part of the driver.
Here is a link to HighPoints Web site and the support for my BE7-RAID board: http://www.highpoint-tech.com/USA/bios_rr133.htm
Yep, there they are.
I see 2 sets of drivers:
- Binary-only, kernel-specific versions. These are older versions, let alone not updated for the latest kernels for each. I.e., they are largely installer driver disks, and you'll have to do the next (source code) anytime you update the kernel.
- Source code, there is 2 parts. Part 1 is the "raw" ATA channel/disk support available in source code form. Part 2 is the "FRAID" logic and _binary_ only. Part 2 might not link against various kernel versions (let alone probably not kernel 2.6, which CentOS 4.x is).
Is there a way to install Centos 4.1 and bypass the RAID features of the motherboard; avoid getting the Panic?
The panic is caused by your kernel not understanding the disk organization. You have to _break_ the RAID organization (typically done in the FRAID BIOS) _before_ installing.
But then you're no longer running redundant. You can attempt to get into the whole MD (any kernel) support, but it's really a PITA IMHO.
For CentOS 4.1, you could leave the FRAID organization intact and use the newer LVM2-MD FRAID meta-data support, but that's also a PITA to setup.
Or you could save yourself a crapload of headaches and get a 3Ware card for $125 -- Escalade 7006-2 for ATA, 8006-2 for SATA. They are well worth the cost -- Windows or Linux.