Raid help

mobassir · 08-07-2003, 05:24 AM

hello
every one

i want to install adaptec 1200A raid with 2 seagate 40GB IDE drives ad Mirror set. both hard drives have data and formated as NTFS , what are the proper steps in linux for configure mirror set.
in my views.
1-i will have to move all data to and other hdd ?
2-then reconfigure morror from raid card bios software ?
3- in linux i have to mount that mirror hard disk ?
4- and then move all data on mirror hard disk will autometic mirror
on second mirror hdd.

or and other proper way or further steps ?

thank you

Mobassir Sattar khan

consta · 08-07-2003, 06:49 AM

Here is some basic information about mirroring.
http://www.linuxgazette.com/issue45/nielsen.html

mobassir · 08-07-2003, 07:47 AM

i want to configure raid though raid bios

mobassir · 08-09-2003, 02:03 AM

Still waiting for positive reply

malcidragon · 08-09-2003, 09:57 AM

Guess work here...
linux will only see the raid device as a single disc (which it really is)
If you have 2 discs mirrored, really you only have 1 disc.

mobassir · 08-11-2003, 08:16 AM

yes i know i mirror only one drive will be shown
i want to ask in which file sytem i should format drives

some one tell me that in NTFS is dangrous to write in linux.
or should i format drives as fat 32, or linux will autometic detect and format drives in Ext3 , then how i could access my raid hdd

consta · 08-14-2003, 03:35 AM

I would not prefer to NTFS, you should try ext3 or reiserFS.

jonas_larson · 08-14-2003, 09:14 AM

Hi Mobassir Sattar khan,

Your step by step looks accurate. But NTFS isn't the best filesystem to use on a linux box. (all though it will work, but NTFS is still labled as experimental...)

If you are storing data and are going to export that data to windows machines I would format the filesystem as a EXT3 or ReiserFS. If you are going to use the data on your Linux box only I still would format the disk as EXT3 or ReiserFS... ;o)

Good luck

Jonas

mobassir · 08-15-2003, 06:53 AM

thank you for reply
But tell how i can impelement Raid 1, in running redhat 9, i dont want to reinstallation.
i installed raid card and boths hdd and raid 1 is define in card bios. in harsware browser i can see both hdd like this.
/dev/hde
hde1 1 7297 57239 ntfs

/dev/hdg
hdg1 1 7297 57239 ntfs

and i also tried to mount hde1 , it work sucessfully. but i dont know raid is working or not . i want to reconfigure it but i dont know how i can do it in running envoierment