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Raid 1 degraded dell

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In general, when a RAID component fails the whole disk where that component is located should be replaced. If the problem persists the faulty disk must be replaced and the full sequence followed. After the SMART test finish, examine the log Show Status and near the end under "SMART Self-test log" watch the last test result, which is 1; it should be "Completed without error", which is OK, or "Completed: read failure", which means that the next instructions will not succeed and you will not be able to fix the degraded RAID array and might even lose data -- backup it now.

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If it suceeds you should perform next a long test, which tests all disk and takes hours to complete; again examine the log when it finishes. The SMART test is particularly important if both disks are from the same model and manufacturer and you bought both of them at the same time on the same store, so they are probably from the same manufacturing batch and as such the probably of a double failure increases, and it might fail shortly after the first one.

There, under "Components", you should see two disk partitions, e. If you only see components in back, not in red, then that component refers to the good disk, and the failed disk is the other. A RAID component is a disk partition, and from the failed component name you can infer which disk should be replaced, just remove the number from the end of the component name and you will get the disk device name. C: remove the failed disk from the box You can now either: 1.

If you get any error popup, you have to orderly power-off the box. D: insert a new disk with identical or bigger capacity than the failed one Now you need to plug in a new disk to replace the failed disk. Assuming that the disks have not changed names, continuing with the example above sdb will be the new disk name and sda the old good disk name. The new disk can have the same or a bigger capacity than the failed disk, but not a smaller capacity.

If the new disk is of a greater capacity than the failed one, only part of the disk will be used to rebuild the RAID and you can later use the unused part to to create a "standard" filesystem and use it. Read the popup message carefully, to be sure that you are not copying in the wrong direction!!!

This will copy the partition table of the good old disk to the new disk and is a fast operation. After it finishes, if you select either the sda or sdb disk on the upper section you should see a similar output in the lower section; if the new disk is of a greater capacity you will see some free space on the new disk that you can later use for other filesystems.

This is the key factor and is all that is needed to rebuild the degraded RAID array. Use either set of instruction bellow, depending on the Alt-F version you are using. For previous Alt-F versions you have to resort to the command line or upgrade Alt-F to the last version. Notice first in the Disk Partitioner:. The rebuild should start immediately and might take up to 15 hours to complete. You can watch the progress on the Status page. You can start using the RAID immediately.

Please read this twice, understanding everything that is being done, and if any information does not seems to fit, please ask. Help Create Join Login. Operations Management. IT Management. Project Management. Services Business VoIP.

Resources Blog Articles Deals. Menu Help Create Join Login.Installed and ran Crashplan to external backup drive before proceeding with dealing with the internal drive issue. Seemed to run fine. Left it to backup over night. Next morning things were worse. Desktop covered with files that had recently been cleaned up and copied to the HD. There was no Crashplan backup.

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The computer now barely runs. All resources seem to be taken up doing something. I have run it in Safe Mode with no problems but can not run a virus scan in that mode. Logged back on, as painfully slow as it was and began a full virus scan- Symantec Endpoint Protection. Before the virus scan I logged on on Safe Mode and manually backed up all of the data so I am good with a backup. My questions- what could be going on and what are my next steps?

I left it running SEP. What is my approach? It run it in Safe Mode Command Line all the time. The drawback is that it can take up to 24 hours to complete a scan on a large drive with lots of files. If you don't have a backup, backup ASAP. I guess my concern is this- is the bad behavior of the computer due to the bad drive or could there be another issue going on? It was almost as if the Crashplan installation blew it up.

Understanding Dell PowerEdge RAID Controllers Part 1

It was not behaving "that" badly before that. Sounds more like malware to me. You did not have a degraded array before he took it? Why did he take it? I've worked on Dell's machines with degraded arrays and you can't tell the difference performance wise.

You mentioned you backed up all the data. Do you have all the software as well? I'm just thinking it sounds pretty messed up and you might just as well reload the OS and start fresh. I believe it is the built-in raid controller. Unfortunately I did not set the machine up. Just working on it now.Unfortunately, I had a small accident tonight while I was working on that machine. While attempting to clean up a cable mess, I accidentally yanked on the wrong cable and unplugged the power for the server.

By entering the S configuration, it tells me that drive 0 is degraded, and the other one is fine.

The server boots just fine. I opened the OpenManage utility which displays the status of the virtual disk to be degraded as well. However, despite displaying the status as being degraded, absolutely nowhere does it list any option to rebuild the array.

raid 1 degraded dell

I can't even check for the consistency. Under the drop-down list for "tasks," the only available options are:. That's all. Obviously, I don't want to do any of those. The configuration utility in the BIOS also seems useless. Although it lists the specific physical disk that is degraded, I cannot see any option for rebuilding the array consistency. Since the physical disk has not failed and is not actually damaged, I don't need or want to replace it.

So, why isn't any rebuild option listed, and how can I rebuild this array without deleting the entire volume and restoring from a backup? Go to Solution. I tried swapping the cables, and while it was smart enough to still realize the disk was just moved, it did not affect the degraded disk. I decided to go for broke and just take the degraded disk out and "clean" it using DiskPart. That worked fine, and Windows 7 displayed the disk as "not initialized.

I continued booting into Windows Server to verify that I haven't screwed anything else up to put my nerves at ease. Windows booted, so I went into the virtual disks section of OpenManage and saw that the "new" rather, old disk was displayed there. So, I selected "delete" from the list of available tasks. It deleted successfully, disappearing from the list of virtual disks. At this point, I figured I could go right ahead and assign a dedicated hot spare to the degraded array from the available tasks.

No disks available. Freaking out now, I went under the "physical disks" section of OpenManage, and there it was with its state as "ready" opposed to "online". Under its available tasks, it had "assign global hot spare.

I'll update on the status when it completes. EDIT: Everything worked successfully. The rebuilding completed after a few hours and the RAID volume is reading as healthy again.

View solution in original post. The only way to get the drive back into the array is select assign hot spare, if this screen lists the disk you disconnected then set it as hot spare and reboot. It will start to rebuild from the other disk.

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Thanks for your suggestion, and sorry for the late response. Unfortunately, when I go to assign a hot spare to the array, OpenManage says, "There are currently no disks that are available, large enough, or of the correct type to be used as a hot spare for this virtual disk.

The degraded drive is still in the system, and it's visible under the "physical disks" menu. Is there any other way to restore redundancy? I'm shocked at how complicated this is for a server. Sounds like you will have to offline the disk, then online it then set it as hot spare.

raid 1 degraded dell

In open manage, go to physical view and select disk 0. In 'available tasks' select offline and apply.This server has 2 x1 TB Sata drives configured as a virtual raid 1. I see the degraded message during boot but windows does load and runs, though it is slow and momentarily freezes for seconds every once and awhile. If you mouse over the triangle it says - non-critical. I was expecting to drill down further and see the physical drives with one showing an error, but it does not let you any further than seeing the single virtual drive.

Does this indicate that drive 1 is bad and should be replaced? If so, should I replace the drive and let it rebuild on its own or do I need to first undo the raid, replace the drive, then recreate the mirror? Or is there something else I need to be looking at? I appreciate any help on this issue. What makes you think drive 1 and not drive 2 or 0?

Thanks for the information. Looking at the raid from bios it shows it is booting from drive 0, so that is why I am assuming drive 1 may be bad. You'll want to make sure you have a good backup.

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If the virtual disk is showing an error, but not on either drive, then it is likely the array is corrupt. I used ctrl-c to go into raid bios but didn't see the virtual or physical drives, maybe I missed the menu option?

You spoke of a virtual drive I believe I saw the virtual drive in open manage, but I wasn't able to see physical drives there. What I saw when I went in via ctrl-C was a pull down that offered changing the boot drive to either 0 or 1. If there were more options, I didn't see how to get to them but I may not have spent enough time looking. I'd like to go back onsite this week with a new drive and hopefully figure out the right remedy. Is there another bios option I should try, like ctrl-r?

I took a closer look at the server. There are 2 connectors. Under connector 0, it shows one physical disk Under connector 1, there are no physical disks. Under virtual disks, it shows virtual disk 0 Raid 1, and there is an error triangle next to it.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Server Fault is a question and answer site for system and network administrators.

It only takes a minute to sign up. If it were one of the disks in the data-housing RAID-5, I would quite happily wander into the server room, take the drive out and replace it with a new one, and wait for it to rebuild. However, I'm getting a bit jumpy with the idea of pulling one of the OS disks and for some reason, the fact that it's 'Disk 0' adds to that, even though I know it makes no difference if it's Disk 0 or Disk Is there anything I should be aware of, or is it simply a case of pulling the disk out and replacing it while the server's running?

I presume the OS won't be writing to that disk since it's failed?

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You can replace the disk without incident in a hardware RAID scenario like this. The drives are meant to be hot-swappable and the process simplified to this level.

I just replaced a disk in a similar setup on a PE Mine was a RAID5 and not 1 though but should make no difference. IF the hot swap doesn't work, here are some other things you may need to try:. Pull the disk out and put the new one in. When I popped mine in it did not actually start to rebuild the array at all. I had to add the disk back to the VD. It took a while to rebuild. I also got a Foreign Disk message on the drive I inserted. Also, if you plan to add additional disks to the array I would recommend waiting to add them until the array is completely rebuilt.

Since it was a production and necessary server I could not take it offline and had to do the rebuild during office hours. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 6 years, 11 months ago. Active 6 years, 11 months ago. Viewed 8k times. I'm sure I probably know the answer to this question, and am just looking for some reassurance! Any advice would be appreciated!The physical drives have the following status:.

You need to look at the virtual disk details to view the member disks. It looks like PD 1 fell out of the array somehow. A ready state means the disk is ready to be used, it is not currently being used for anything. Thank you for the quick reply. Is this the correct action? Yes, if you assign it as a hot spare that should initiate a rebuild.

You may want to run diagnostics on the drives first. Also, you should review any available hardware logs to see what may have caused the problem. The general rule of thumb is if your controller has write cache it has a log, the logs are stored in the cache. If you are unable to properly review the log you can post a URL to it and I will review it.

Either upload the text file or use a text sharing site like pastebin and provide a URL. Browse Community. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Next Step Consu 1 Copper. The physical drives have the following status: DriveOnline, capacity Thanks, Nate. All forum topics Previous Topic Next Topic.

raid 1 degraded dell

Hello You need to look at the virtual disk details to view the member disks. Hi Daniel, Thank you for the quick reply. Dell Support Resources. Related Topics. One of the six disks is "Ready". I want to replace it.Go to Solution. If you make it to the screen which allows you to use the last known GOOD configuration choose that and allow windows to start otherwise, choose safe mode to get to the matrix console.

There in advanced mode you will see that status of your array. Click the drive that says something like missing drive or non-raid disk and initialize it so it can be recognized.

I rebooted and it brought me to a screen that asked me if i wanted to rebuild the new drive and I selected YES. Seems like it would have done this automatically but I don't know.

View solution in original post. Then it will re-build the disk array. Oh Holy smokes! I went in powered down and opend the box to look at the drive and identify sata1 sata0 but it didn't correspond to port 0 or port Following my manual i identify SATA1 as being the secondary drive and disconnected it and pulled it out to look at it.

Ok, so I think you know which drive is the bad one. Browse Community. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for. Search instead for. Did you mean:. I have an XPS So I go out and buy a replacement. WHat's next? All forum topics Previous Topic Next Topic.

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Accepted Solutions. Replace the affected drive. I chose rebuild to that disk but nothing happened The status will show rebuilding and you can breath easier. Turned the computer back on BSOD Will only boot up in safe mode Dell Support Resources.

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