Hi,
I have 4 x 500GB PATA Harddisk and I like to have them striped and mirrored. What is the best practise? Raid 0+1 or 1+0.. And how do i go about it?
Thanks
On Sunday 27 May 2007, CentOS List wrote:
Hi,
I have 4 x 500GB PATA Harddisk and I like to have them striped and mirrored. What is the best practise? Raid 0+1 or 1+0.. And how do i go about it?
Raid 1 and then Raid 0
http://en.wikipedia.org/wiki/RAID
Read the sectioon on RAID 1+0
Given: sda sdb sdc sdd
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
Of course given the chance a hardware raid is better. :)
Shawn
Raid 1 and then Raid 0
http://en.wikipedia.org/wiki/RAID
Read the sectioon on RAID 1+0
Given: sda sdb sdc sdd
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
regards
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Shawn
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
----- "CentOS List" centoslist@gmail.com escreveu:
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
As far as I know, the CentOS installer didn't allow a RAID 1+0 during install! But, I think you can setup this using RAID1 + LVM : - Setup md0 (Raid1) (sda,sdb) - Setup md1 (Raid1) (sdc,sdd) - Setup LVM (md0+md1)
Or you can try install CentOS on another drive, and the setup the RAID1+0 and migrate the install to it.
Best Regards Nicholas ----- Original Message ----- From: "Antonio da Silva Martins Junior" asmartins@uem.br To: "CentOS mailing list" centos@centos.org Sent: Wednesday, May 30, 2007 12:58 AM Subject: Re: [CentOS] raid
----- "CentOS List" centoslist@gmail.com escreveu:
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
As far as I know, the CentOS installer didn't allow a RAID 1+0 during install! But, I think you can setup this using RAID1 + LVM : - Setup md0 (Raid1) (sda,sdb) - Setup md1 (Raid1) (sdc,sdd) - Setup LVM (md0+md1)
But i am stuck during the setup of md0 as it requires me to specified a mount point.
----- "CentOS List" centoslist@gmail.com escreveu:
----- Original Message ----- ----- "CentOS List" centoslist@gmail.com escreveu:
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
As far as I know, the CentOS installer didn't allow a RAID 1+0 during install! But, I think you can setup this using RAID1 + LVM :
- Setup md0 (Raid1) (sda,sdb)
- Setup md1 (Raid1) (sdc,sdd)
- Setup LVM (md0+md1)
But i am stuck during the setup of md0 as it requires me to specified a mount point.
Well, select the partition type as LVM not ext2/3 and it will not ask for a mount point :)
Antonio.
----- Original Message ----- ----- "CentOS List" centoslist@gmail.com escreveu:
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
As far as I know, the CentOS installer didn't allow a RAID 1+0 during install! But, I think you can setup this using RAID1 + LVM :
- Setup md0 (Raid1) (sda,sdb)
- Setup md1 (Raid1) (sdc,sdd)
- Setup LVM (md0+md1)
But i am stuck during the setup of md0 as it requires me to specified a mount point.
Well, select the partition type as LVM not ext2/3 and it will not ask for a mount point :)
So where do i mount /boot / and swap?
CentOS List wrote:
----- Original Message ----- ----- "CentOS List" centoslist@gmail.com escreveu:
Set up md0 (Raid1) (sda,sdb) Set up md1 (Raid1) (sdc,sdd)
Set up md2 (Raid0) (md0,md1)
ok. That sounds easy.. I tried to do md0. It ask for me a mount point. What should I mount it on?
The only thing you mount at the end of the day is md2
Are you trying to set this up in the installer or somewhere else?
Yes. During the installing of CentOS 5. I had specified hda and hba as raid and when i wanted to create md0, it want me to supply a mount point. So i am stuck there.
As far as I know, the CentOS installer didn't allow a RAID 1+0 during install! But, I think you can setup this using RAID1 + LVM :
- Setup md0 (Raid1) (sda,sdb)
- Setup md1 (Raid1) (sdc,sdd)
- Setup LVM (md0+md1)
But i am stuck during the setup of md0 as it requires me to specified a mount point.
Well, select the partition type as LVM not ext2/3 and it will not ask for a mount point :)
So where do i mount /boot / and swap?
You can put / and swap on the LVM. /boot needs to be separate.
-
Antonio da Silva Martins Junior -
CentOS List -
Feizhou -
Shawn Everett