January 28, 20188 yr Good day alltogether! I'm currently starting to panic a bit, as im afraid I might have lost some data... My parity disk appears to be faulty. and multiple hdd's have bad smart reports, while other who have good smart reports show no data on them... as I wanted to check if the parity disk is defect or if it work i had hooked it up to my mac and accidently formatted it, so I guess the parity ist not valid anymore, so no data reconstruction possible. in the dashboard.tiff pic you can see the faulty parity disc, as well as disc 3, 5 and 7 showing bad smart reports. in the Main screen.tiff pic you can see the data usage on disc 2 and in disk2.tiff pic there is no data visible. the smart says its OK and a self test shows its ok too... I added a diagnostics file too, for you pro's to check that out. now I am completely lost and have no idea what to do and hope you can guide me through this wich as low losses as possible... thank you all in advance and best regards. tower-diagnostics-20180128-0320.zip
January 28, 20188 yr Parity disk looks OK but since you destroyed parity it doesn't help. Why didn't you ask before you made this critical mistake? Disk5 needs to be replaced but without parity we will have to see if it can be read. The only thing that comes to mind is filesystem checks on all disks. Wait and see if someone else has another idea.
January 28, 20188 yr Do you have backups of any critical and irreplaceable files? If not that would be the first thing to take care of.
January 28, 20188 yr First thing you need to do is to get rid of the port multiplier (or controller with a built in port multiplier) you're using, these are known problem and you're getting errors on multiple disks, likely also why disk2 appears empty, after replacing it grab and post new diags.
January 28, 20188 yr Author 7 hours ago, johnnie.black said: First thing you need to do is to get rid of the port multiplier (or controller with a built in port multiplier) you're using, these are known problem and you're getting errors on multiple disks, likely also why disk2 appears empty, after replacing it grab and post new diags. how can I do that if its not the controller? how can I find out what it is? do you have a recommendation for a controller? I need at least 4 sata ports. 7 hours ago, trurl said: Parity disk looks OK but since you destroyed parity it doesn't help. Why didn't you ask before you made this critical mistake? Disk5 needs to be replaced but without parity we will have to see if it can be read. The only thing that comes to mind is filesystem checks on all disks. Wait and see if someone else has another idea. how could I make this filesystem check?
January 28, 20188 yr The first thing: 7 hours ago, trurl said: Do you have backups of any critical and irreplaceable files? If not that would be the first thing to take care of. And then I would concentrate on johnnie.black suggestions. Controller issues can make problems worse, and fixing controller issues might fix other problems or at least make it more likely they can be fixed.
January 28, 20188 yr If you just need 4 ports the Adaptec 1430SA is still a good option, they can be found very cheap on ebay, alternatively buy an 8 port LSI controller.
January 28, 20188 yr Author 25 minutes ago, trurl said: The first thing: And then I would concentrate on johnnie.black suggestions. Controller issues can make problems worse, and fixing controller issues might fix other problems or at least make it more likely they can be fixed. I'm currently doing this. 12 minutes ago, johnnie.black said: If you just need 4 ports the Adaptec 1430SA is still a good option, they can be found very cheap on ebay, alternatively buy an 8 port LSI controller. I've got this one: my controller is it possible to find out if its got this port multiplier thing? I'd go for an Adaptec then, as the LSI is very pricey for me....
January 28, 20188 yr 14 minutes ago, Dousi said: I've got this one: my controller is it possible to find out if its got this port multiplier thing? That's it, it's a 4 port controller with a built in port multiplier.
January 28, 20188 yr Author 10 minutes ago, johnnie.black said: That's it, it's a 4 port controller with a built in port multiplier. I'll replace it then, thank for your help! I just finished the read check an it finished successfully, stating the parity is valid. would that mean that I can replace the disk 5 and restore the data from the parity drive?
January 28, 20188 yr No, like the name implies a read check isn't the same as a parity check, your parity disk is disable and wasn't checked, besides there were read errors on disk5, so even if there was parity it woudn't be 100% valid, your best bet it to move all data you can from disk5 to another disks (or to a new disk) then resync parity, but I would only do that after getting rid of that controller.
February 9, 20188 yr Author On 28.1.2018 at 10:48 PM, johnnie.black said: No, like the name implies a read check isn't the same as a parity check, your parity disk is disable and wasn't checked, besides there were read errors on disk5, so even if there was parity it woudn't be 100% valid, your best bet it to move all data you can from disk5 to another disks (or to a new disk) then resync parity, but I would only do that after getting rid of that controller. now, I've got that new controller and moved all files from disk 5 as a preparation to replace it once everything else works properly. how am I gonna do that new parity resync? regards
February 9, 20188 yr Assuming you're going to remove the failed disk5 from the array: -Tools -> New Config -> Retain current configuration: All -> Apply -Unassign disk5 (if there's a new one assign it in this step) -You can reorder the remaining disks if you want -Start the array to begin the parity sync
Archived
This topic is now archived and is closed to further replies.