LinuxQuestions.org
Latest LQ Deal: Linux Power User Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 02-22-2012, 05:31 PM   #1
Thangapandi
LQ Newbie
 
Registered: Feb 2012
Posts: 3

Rep: Reputation: Disabled
Multiple HDD in a singlepartition without lvm


hi,

i had 10 seperate 2tb hdds.i want to make a partition of two 10tb ext4 partition without the lvm is there any possiblities.
 
Old 02-22-2012, 05:50 PM   #2
anomie
Senior Member
 
Registered: Nov 2004
Location: Texas
Distribution: RHEL, Scientific Linux, Debian, Fedora
Posts: 3,935
Blog Entries: 5

Rep: Reputation: Disabled
With ext4 and no LVM2? Not that I know of.

This should be possible with btrfs.
 
Old 02-22-2012, 06:00 PM   #3
whizje
Member
 
Registered: Sep 2008
Location: The Netherlands
Distribution: Slackware64 current
Posts: 592

Rep: Reputation: 140Reputation: 140
should be possible with md create a raid0 with 10 disk and format it with ext4
see as example my post on raid10
Code:
mdadm --create /dev/md0 --raid-devices=10 --level=0 --auto=yes --metadata=0.90 /dev/sd[abcdefgehi]
http://www.linuxquestions.org/questi...nit-rd-930753/
md should be compiled in thee kernel if you want a root on the device

Last edited by whizje; 02-22-2012 at 06:02 PM.
 
Old 02-22-2012, 10:58 PM   #4
suicidaleggroll
LQ Guru
 
Registered: Nov 2010
Location: Colorado
Distribution: OpenSUSE, CentOS
Posts: 5,258

Rep: Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947
That's what RAID is for, but beware that what you're asking for is VERY dangerous, especially with that many drives. You're talking about a striped RAID across 5 disks...I wouldn't expect that to last any longer than 1-2 years before a drive fails and the ENTIRE array is lost.

There are many types of RAID out there: 0, 1, 10, 5, 50, 6, 60 are the big ones. For your setup, I wouldn't hesitate to set up either two RAID5 arrays of 8TB each, or one RAID6 array that's 16TB. I would not consider a pair of RAID0 (striped) arrays as a realistic possibility for even a second, the risks are too great.

Last edited by suicidaleggroll; 02-22-2012 at 10:59 PM.
 
Old 02-22-2012, 11:14 PM   #5
jefro
Moderator
 
Registered: Mar 2008
Posts: 15,374

Rep: Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198Reputation: 2198
Debian with freebsd running zfs?
 
Old 02-23-2012, 05:32 PM   #6
Thangapandi
LQ Newbie
 
Registered: Feb 2012
Posts: 3

Original Poster
Rep: Reputation: Disabled
sorry guys

i dont need RAID partition also. i asking is there any possibility for configuring multiple hdd in single partition like a normal partition..
 
Old 02-23-2012, 06:09 PM   #7
suicidaleggroll
LQ Guru
 
Registered: Nov 2010
Location: Colorado
Distribution: OpenSUSE, CentOS
Posts: 5,258

Rep: Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947Reputation: 1947
That's exactly what RAID is. Multiple drives working together to present as a single partition/filesystem to the OS. What you're asking about is RAID0, even if you don't think you are. RAID0 is a striped RAID, meaning there is no redundancy. You get a single partition/filesystem who's size is the sum of all of the drives in the array (10TB if you're using 5 2TB drives). Anything that is written to the array (the single partition that the OS sees) is split among all of the drives (20% goes to drive A, 20% to drive B, 20% to drive C, etc). This makes RAID0 very fast, but also very unstable, because if any of the drives in the array decides to die, you lose everything on the entire array.

You might not think you're asking about RAID, but you are. I would highly recommend you go with a pair of RAID5 arrays instead. You'll lose the capacity of 1 drive per array (you'll get 8TB out of 5 2TB drives), but the array will be fully redundant. This means that if at any time any of the drives in your array decides to stop working, you lose nothing. All you have to do is replace the failed drive, the RAID will rebuild itself, and you'll have redundancy again within a day, without losing a single file. You'll also be able to use the system the entire time, both with the failed drive and while rebuilding.

Last edited by suicidaleggroll; 02-23-2012 at 06:11 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
12.1 LUKS and LVM install on system with multiple SATA and IDE HDD Z038 Slackware - Installation 10 02-03-2010 06:05 PM
Replacing HDD in an LVM without any ports left for new HDD, therefor using a USB dock boast Linux - General 0 01-12-2010 10:03 AM
LVM and multiple iSCSI disks performance of LVM xxx_anuj_xxx Linux - Server 4 05-01-2008 01:26 PM
HDD in LVM died. what now? jalla2000 Linux - Hardware 3 01-14-2008 07:38 AM
How to add new HDD to LVM fw12 Linux - General 12 08-18-2007 06:31 PM


All times are GMT -5. The time now is 04:36 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration