08-17-2009
RAID 0 is not mirroring. If you are using RAID 0, I'd back that up fast, and switch to RAID 1, which IS mirroring. If you break the RAID you will lose your data.
What you CAN do, to accomplish what you want is this.
using the mdadm command mark 1 drive as failed and remove it from the array. Then, you can format the drive and use it for data. If at any other point, and I'd suggest you do this, you wish to use a third drive or a portion of a third drive to mirror again, you can use that partition and rejoin it to your array.
9 More Discussions You Might Find Interesting
1. AIX
Hi
Can I add disks on the fly to extend the capacity of an existing RAID 5 volume?
It's created on a 4P Advanced SSA Raid Adapter.
I need to extend a volume group, so I figured it would be easiest to extend the "physical disk" which is a RAID5 volume.
Thanks. (1 Reply)
Discussion started by: osee
1 Replies
2. Solaris
Hi there
the Sunfire X4100 has a great tool that you can get to from BIOS called the configuration utility which allows you to set up Disk mirroring (RAID 1) before the OS sees it, which is great and it works a treat, however, we have a large datacentre across multiuple sites and I need to find... (1 Reply)
Discussion started by: hcclnoodles
1 Replies
3. Solaris
New to the boards here so please bear with me!
I have a T2000 server with Solaris 10 installed on it. Disk 0 is the only disk currently being used, as I do NOT have a RAID set up. Disk 1 is just sitting there looking pretty.
I'd like to set up a mirrored RAID in order to fully utilize both... (5 Replies)
Discussion started by: phi148
5 Replies
4. Solaris
Hi everyone
I've just purchased a Sun T5120 server with 2 internal disks. I've configured hardware RAID (mirror) and as a result the device tree in Solaris only contains 1 hard drive.
My question is, how would I know when one of the drives become faulty?
Thanks (2 Replies)
Discussion started by: soliberus
2 Replies
5. AIX
Hello,
I have a scsi pci x raid controller card on which I had created a disk array of 3 disks
when I type lspv ; I used to see 3 physical disks ( two local disks and one raid 5 disk )
suddenly the raid 5 disk array disappeared ; so the hardware engineer thought the problem was with SCSI... (0 Replies)
Discussion started by: filosophizer
0 Replies
6. UNIX for Dummies Questions & Answers
Hello folks;
I'm trying to install Solaris 10 x86 on SUN X4150 box with 6 disks in it, the question is how can i create a Virtual disk like RAID 0 before i install Solaris.
When i boot up i don't see any option to go and create my raid before the installation begin.
Thanks in advance for any... (2 Replies)
Discussion started by: Katkota
2 Replies
7. Solaris
Server Model: T5120 with 146G x4 disks.
OS: Solaris 10 - installed on c1t0d0.
Plan to use software raid (veritas volume mgr) on c1t2d0 disk.
After format and label the disk, still not able to detect using vxdiskadm.
Question:
Should I remove the hardware raid on c1t2d0 first?
My... (4 Replies)
Discussion started by: KhawHL
4 Replies
8. Solaris
Hi All, I'm new to this site. I have a few question since I'm in the process how to to repair my raid on Sun V240 Server.
1. How can we create RAID in Sun Sparc v240?
2. What utility can help people create RAID in Sun Sparc v240?
3. Do we need any special software to create the... (12 Replies)
Discussion started by: angkor
12 Replies
9. Red Hat
Hello,
I want to delete a RAID configuration an old server has.
Since i haven't the chance to work with the specific raid controller in the past can you please help me how to perform the configuraiton?
I downloaded IBM ServeRAID Support CD but i wasn't able to configure the video card so i... (0 Replies)
Discussion started by: @dagio
0 Replies
LEARN ABOUT NETBSD
arcmsr
ARCMSR(4) BSD Kernel Interfaces Manual ARCMSR(4)
NAME
arcmsr -- Areca Technology Corporation SATA/SAS RAID controller
SYNOPSIS
arcmsr* at pci? dev ? function ?
DESCRIPTION
The arcmsr driver provides support for the PCI-X and PCI Express RAID controllers from Areca Technology Corporation:
- ARC-1110 PCI-X 4 Port SATA RAID Controller
- ARC-1110ML PCI-X 4 Port SATA RAID Controller
- ARC-1120 PCI-X 8 Port SATA RAID Controller
- ARC-1120ML PCI-X 8 Port SATA RAID Controller
- ARC-1130 PCI-X 12 Port SATA RAID Controller
- ARC-1130ML PCI-X 12 Port SATA RAID Controller
- ARC-1160 PCI-X 16 Port SATA RAID Controller
- ARC-1160ML PCI-X 16 Port SATA RAID Controller
- ARC-1170 PCI-X 24 Port SATA RAID Controller
- ARC-1200 Rev A PCI Express 2 Port SATA RAID Controller
- ARC-1202 PCI Express 2 Port SATA RAID Controller
- ARC-1210 PCI Express 4 Port SATA RAID Controller
- ARC-1220 PCI Express 8 Port SATA RAID Controller
- ARC-1230 PCI Express 12 Port SATA RAID Controller
- ARC-1230ML PCI Express 12 Port SATA RAID Controller
- ARC-1231ML PCI Express 12 Port SATA RAID Controller
- ARC-1260 PCI Express 16 Port SATA RAID Controller
- ARC-1260ML PCI Express 16 Port SATA RAID Controller
- ARC-1261ML PCI Express 16 Port SATA RAID Controller
- ARC-1280 PCI Express 24 Port SATA RAID Controller
- ARC-1280ML PCI Express 24 Port SATA RAID Controller
- ARC-1680 PCI Express 8 Port SAS RAID Controller
- ARC-1680LP PCI Express 8 Port SAS RAID Controller
- ARC-1680i PCI Express 8 Port SAS RAID Controller
- ARC-1680x PCI Express 8 Port SAS RAID Controller
- ARC-1681 PCI-X 8 Port SAS RAID Controller
These controllers support RAID levels 0, 1, 1E, 3, 5, 6, and JBOD using either SAS or SATA II drives.
arcmsr supports management and monitoring of the controller through the bioctl(8) and envstat(8) commands.
Please note, however, that to use some features that require special privileges, such as creating/removing hot-spares, pass-through disks or
RAID volumes will require to have the password disabled in the firmware; otherwise a Permission denied error will be reported by bioctl(8).
When a RAID 1 or 1+0 volume is created, either through the bioctl(8) command or controller's firmware, the volume won't be accessible until
the initialization is done. A way to get access to the sd(4) device that corresponds to that volume without rebooting, is to issue the fol-
lowing command (once the initialization is finished):
$ scsictl scsibus0 scan any any
The arcmsr driver will also report to the kernel log buffer any error that might appear when handling firmware commands, such as used by the
bioctl(8) command.
EVENTS
The arcmsr driver is able to send events to powerd(8) if a volume or any drive connected to the volume is not online. The state-changed
event will be sent to the /etc/powerd/scripts/sensor_drive script when such condition happens.
SEE ALSO
intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8), scsictl(8)
HISTORY
The arcmsr driver first appeared in NetBSD 5.0.
AUTHORS
The arcmsr driver was originally written for OpenBSD by David Gwynne. It was ported to NetBSD and extended by Juan Romero Pardines.
BSD
March 3, 2008 BSD