T800

Just a quick update on this. I ordered 3 donor PCB boards from China. Two weeks later they arrived, I got a half decent heat gun with a fine tip and swapped the BIOS chips over. One of the parity drives and one of the data drives came back to life. I figured, the 3rd PCB maybe be faulty so I told them and they sent another. It arrived on Monday, swapped BIOS chip and viola it's back up and running. I'm back to where I was data-wise and with 2 parity drives and just finished my 2nd parity check with 0 errors. The only thing left is to get the server to boot from USB by itself. It's fine if I restart but if I shutdown and boot I have to go to the boot menu and select USB. Even if I can't sort that i can live with it for now. Short version, I've managed to not lose any data.

The parity check went fine. The server has been working great since. I installed Tips and Tweaks and set to On Demand. It still comes up as an error in fix common problems but the CPU shows it not at 100% and the server sleeps now which it hadn't for a few months.

Okay thanks, will do. I actually stopped the monthly check this morning because it completed yesterday, didn't realize it was worth running again. I ran the "Fix Common Problems" plugin and it's reporting: Your CPU is running constantly at 100% and will not throttle down when it's idle (to save heat / power). This is because there is currently no CPU Scaling Driver Installed. Seek assistance on the unRaid forums with this issue I never had this before the PSU took a swan dive (or could be from the 6.5.0 update a few days before the PSU went). So far still haven't been able to save USB as the main priority boot device either. Gonna try a firmware update (I noticed it's a couple of revisions old) on the motherboard and another USB port. If it doesn't sort it looks like I might have to get a motherboard after all.

Parity finished without errors. I'll try and fix the 3 fried HDD's when the PCBs turn up. Thanks for all the help everyone.

I swapped the cable and now it's doing parity in 14 hours at 80MB/sec, so far so good.

It is increasing. 6 days until complete. I've stopped the array now. It's nearly 7 years old. The PSU was a Corsair CX430. It's now got a new CX450 in it. I am thinking about replacing motherboard and all cables. I guess that would be a good idea and then what, new config and set it off again? I've attached a diagnostics. tower-diagnostics-20180429-1538.zip

I'm gonna get a PCB and try and save the drives. While I wait for that I have reset 2nd parity as single parity and started a new config with the raining drives. I got quite a few udma urc error counts on drive 6. It's currently on udma crc error count is 5778 Should I stop parity, check connections or just let it finish. Parity write is slow at 9MB/sec

When I put decent PCB's on the 3 HDD's they all appear as devices on the other server. They won't SMART test though and say: === START OF READ SMART DATA SECTION === Read SMART Log Directory failed: scsi error badly formed scsi parameters Read SMART Self-test Log failed: scsi error badly formed scsi parameters What should I do? The drives will mount but have issues. So far the existing drives in the server that failed are passing the SMART tests.

I tried swapping the PCB from another drive and attached to my other server and the drive shows up. It does have the serial of the drive the PCB came off though. I will check the other two later when I get home.

So what do I do, I'm guessing I can keep my data on the drives that are left? Do I preclear the 2nd parity drive to use as single parity and then what?

PSU died, and fried 3 x 4TB HDD's! What now? I installed a new PSU. The server won't autoboot from the USB anymore I have to select it to boot from each time. I reset CMOS and still does it. Motherboard damaged? I tried the HDD's on other power and sata ports and get nothing. I tried on them in my other server to see if it will show up as an unassigned device. It's spins up but don't appear as a device. If the HDD's are completely dead how do I get the server back on with the 2nd parity drive and without the other 2 data drives. .

I was using a Combo Data & Power Cable extension to be able to plug a drive in for precelearing outside the case. Removed it and it precleared fine.

Can anyone help me with this? I'm trying to preclear a drive and it always fails at the end. I uninstalled and reinstalled the plugin but get the same outcome. Preclear in progress... Post-Read verification failed - Aborted TOWER2-preclear.disk-20171210-1340.zip tower2-diagnostics-20171210-1350.zip

Looks very daunting and time-consuming. No guts no glory I suppose. Thanks

Can it be done one disc at a time?

What are my options with a 50TB server with all 14 disks in it all set to reiser?

Clever stuff. I noticed that the plugin may cause issues on reiserfs.

How would I build one disk at a time? Let's say I add my hot spare (arriving today) in the same scenario as yesterday would the array start if I only added the one disk and left the other unassigned? What would happen to the content of the 2nd disk not added? Would it just stay in the parity disk until I add the 2nd? How do I get md5s?

I see, would it have been easy to spot the garbage, 4 TB x 2 is a lot of content? I used to have a hot spare ready to go but with the house move it became lower in priority, granted I may regret that tomorrow. I've got two parity disks if that a makes any difference.

Why so unprotected when rebuilding two disks? When you say didn't have to is that meaning I should have added 2 new disks instead?

Okay thanks, rebuilding now. See what happens in 30 hours when it finishes.

They weren't simultaneous, I forgot to mention in the notifications last night they were a week apart. Do I need to preclear them or just add to the array?

Here you go: tower-diagnostics-20171207-1021.zip

As in an extended smart test?

I realized I should have taken the syslog before I rebooted. Is there a reason why it doesn't save the last few? Heres the smart logs: tower-smart-20171207-0911.zip tower-smart-20171207-0911 (1).zip