Ezro Posted August 7, 2019 Share Posted August 7, 2019 Hi everyone, Last week my server shut down unexpectedly and I've been working on fixing it; after bringing it back up I'm seeing all of the disks as missing except for the boot device. I have a feeling it may be something with the SAS HBA, but it's been a while since I've done any work on this server. If anyone has any ideas / tips to try to get the OS to recognize the drives again it'd be greatly appreciated. Attached is the diagnostics. Regards, Ezro tower-diagnostics-20190806-1738.zip Quote Link to comment
JorgeB Posted August 7, 2019 Share Posted August 7, 2019 5 hours ago, Ezro said: I have a feeling it may be something with the SAS HBA It does look like that is the problem, are the disks detected by the HBA bios during boot? Quote Link to comment
Ezro Posted August 8, 2019 Author Share Posted August 8, 2019 18 hours ago, johnnie.black said: It does look like that is the problem, are the disks detected by the HBA bios during boot? It doesn't look like it. I tried switching the port that the HBA card is plugged into and that also didn't work. I'm not sure if the power outage possibly fried the card itself or if it's my motherboard's ports. It'd be weird if an unused port was fried out, though, so I'm more inclined to believe that it's the HBA card. Do you know if there's possibly a bios property that could have been switched if the bios reset? Quote Link to comment
JorgeB Posted August 8, 2019 Share Posted August 8, 2019 (edited) If the disks aren't detected by the HBA bios the HBA is likely the problem, assuming they work on a different controller. Edited August 8, 2019 by johnnie.black Quote Link to comment
Ezro Posted September 30, 2021 Author Share Posted September 30, 2021 @JorgeB I still have this issue pretty much every time I restart the server and it usually takes a bunch of reboots in order for everything to start working again. Last year I ordered an LSI SAS 9210-8i and swapped it out, but that didn't resolve the issue. I currently have a Supermicro 846E1-R900B server and am not sure how to diagnose if it's something with the SAS backplane or if I happened to receive another dud HBA card. Do you have any advice / steps on how I can diagnose this and hopefully fix it? Quote Link to comment
JorgeB Posted September 30, 2021 Share Posted September 30, 2021 Unlikely to be the HBA if the same happens with another one, you can try connecting up to 8 disks directly to the HBA, even if it doesn't allow array start, you can see if the connected disks are detected and if yes it suggests the problem is the backplane. Quote Link to comment
Ezro Posted September 30, 2021 Author Share Posted September 30, 2021 A bit of a newbie question, but is there an easy way to detect how many / which drives are being detected? (Preferably by serial number) Quote Link to comment
JorgeB Posted October 1, 2021 Share Posted October 1, 2021 Just boot Unraid and look at the main GUI page. Quote Link to comment
Ezro Posted October 6, 2021 Author Share Posted October 6, 2021 @JorgeBI ordered a replacement extender backplane (https://www.ebay.com/itm/274829421125) which is the same model as the one I replaced. After swapping it out, I've been testing it and seeing the same issue(s). Sometimes I'll restart it and no SCSI devices appear in the Tools->System Devices->SCSI Devices. Sometimes a few drives appear. Sometimes almost all (but one) drive appears. I haven't yet had the new backplane show all drives in the SCSI Devices pane. Do you know how I can determine if maybe I'm not powering all of the drives well? Or maybe it's the cables I'm using? I'm not sure how to diagnose what's going wrong but I'm going to switch back to the original backplane to try to get all SCSI devices recognized. Quote Link to comment
JorgeB Posted October 7, 2021 Share Posted October 7, 2021 Did you do this? On 9/30/2021 at 6:49 PM, JorgeB said: you can try connecting up to 8 disks directly to the HBA, even if it doesn't allow array start, you can see if the connected disks are detected and if yes it suggests the problem is the backplane. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.