RAID Question

kofi · 12-19-2004, 02:50 PM

Hello all,

I am curious, I have a box running RHEL 3.0 with one 160 gig IDE drive. Normally, i know to set up RAID, you need to do so before installing software.

My question is, now that I have the system already installed, can I buy another 160 Gig drive, plug it in and configure the system as RAID or do I have to reinstall all over.

It may be a dumb question but I am curious, so please dont kill me for asking.

Thanks.

pcunix · 12-19-2004, 03:00 PM

It's not a dumb question.

You can indeed add a RAID 1 mirror now.

See http://lists.us.dell.com/pipermail/l...ly/014331.html

http://www.macmegasite.com/node/1731

--
Tony Lawrence
http://aplawrence.com

Electro · 12-19-2004, 03:04 PM

You have to backup the data and make the RAID array to use two drives because it will trash all data on the 160 GB hard drive. Though I suggest using RAID level 1 not RAID level 0 because it is better for OS and for serving people when using IDE or SATA devices.

pcunix · 12-19-2004, 03:34 PM

Quote:

Originally posted by Electro
You have to backup the data and make the RAID array to use two drives because it will trash all data on the 160 GB hard drive. Though I suggest using RAID level 1 not RAID level 0 because it is better for OS and for serving people when using IDE or SATA devices.

Backing up data is never a bad idea, but the switch to software mirroring (RAID 1) can be done without destroying data.

http://lists.ssc.com/pipermail/linux...ry/004124.html
http://www.linuxjournal.com/article/5653
and section 4.14 of http://www.faqs.org/docs/Linux-HOWTO...AID-HOWTO.html

--
Tony Lawrence
http://aplawrence.com