Can I pull a RAID drive as a backup image?
Posted on 2005-03-05
Both of my servers have hotswappable RAID 1 arrays. One has SCSI drives and the other has In addition to my daily file backup, I like to make frequent images of my server drives for disaster recovery. My servers don't have to run at night, so it's not that big a deal to take the servers down and then image the drives. But I'd prefer something simpler, and here's what I had in mind:
1. Shut down the server to ensure all files are closed properly and are in a static state.
2. Pull one of the drives from each array and set them aside as a backup.
3. Bring the server back up.
4. Stick another drive into the array and rebuild onto that drive.
If the server becomes unbootable, then put my backup drive back in by itself, then bring the server up and rebuild onto another drive.
Here are my questions:
1. Is it really that simple?
2. Does the RAID controller have to support hotspares to do this?
3. Can I rebuild from both source to spare and vice versa?
4. Will a drive that was in an array be readable on another system that doesn’t have a RAID controller?
Please address my questions and critique my plan.
Thanks in advance.