It has no idea of the physical disks behind the card. It only knows what the raid card presents to the OS. So to answer your question if the raid card fails then ya the server is going down with it. Its very rare for a raid card to fail though.
If you really require that level of availability then I suggest you look into a Stratus technologies ftServer, You can use most any OS and you don't have to change a thing in your application.
I worked on internal storage there almost 10 years ago. We can surprise remove any device literally assert pci reset whenever , detect the fault and failover to the secondary with zero interruption of service. It achieves this by using lockstep technology. However, it is expensive, but not outrageous; x the cost of a equivalent server. The people who usually buy these measure their downtime in tens of thousands of dollars per second or life is at stake.
Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. If a RAID controller fails, does it disrupt service until it's replaced?
Ask Question. Asked 4 years, 2 months ago. Active 4 years, 2 months ago. Viewed 4k times. Improve this question. Winker Winker 97 1 1 silver badge 6 6 bronze badges. A fully redundant server would have multiple disks, on a dual port backplane and two controllers that can talk to a disk via either connection. Post thread. CPUs and Overclocking. Graphics Cards. AnandTech is part of Future plc, an international media group and leading digital publisher.
Visit our corporate site. All rights reserved. England and Wales company registration number Top Bottom. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By continuing to use this site, you are consenting to our use of cookies. Accept Learn more…. Sep 18, Apr 19, Apr 8, Dec 16, Start with 0, 1, 2, and so on. Backup all the RAID drives. This is critical!
Try this if the RAID controller stores metadata on the disks. Otherwise, it could trash your RAID drives and make data recovery impossible. Follow this step at your own risk and only if you have cloned or created an image of your RAID disks. NOTE: This method may not be feasible for many.
Do not change the sequence in BIOS. It should be same as earlier. You may need to use a linux boot disk. In theory yes you could just drop the old drives in the new server and magic will happen, but there is the likely chance that one of the drives could have failed thus killing the raid. Also you may need to do some configuration on the new controller. The box is serviced by our PBX vendor I hope. Unfortunately, I haven't been servicing this location long enough to know what info they are backing up.
If that's working you should be able to find out more about what's going on If you can't, your "bad controller" theory's given a lot of creedence. I've never had luck transferring array drives to other controllers without having to do a restore. When this has happened to me in the past we typically put one of the RAID 1 drives into a server.
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