How to replace a failed drive in TrueNAS SCALE!

Our TrueNAS SCALE host lost yet another Seagate Constellation disk 😡 so it's time to replace it! So, join us and see how quick and easy it is to replace a failed disk in #iXsystems #TrueNAS #SCALE? As an added bonus, we tear apart the failed Constellation and see if we can diagnose why it failed!

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**TIMESTAMPS!**
0:00 Introduction
0:21 The replacement disk we chose
0:48 How to replace a failed drive in TrueNAS SCALE
1:00 How to find the failed disk in TrueNAS SCALE
1:13 How to offline a failed disk in TrueNAS SCALE
1:50 How to replace an offline disk in TrueNAS SCALE
2:18 A word about ZFS Reslivering after a disk replacement
2:40 Investigating why the Seagate Constellation failed
4:19 Closing!

[grantfahey]

I put together a 6 drive truenas box about 6 months ago. My first drive failed last week, and I had never done a replacement before. This was a perfect step by step for me.

[TrueNAS]

Wahoo! Once again, another great tutorial from one of our favorite creators. Keep up the good work guys!

[Excited-IT-Architect]

Awesome, thank you. I followed your procedure after a recent disk failure and I experienced that the new (exchanged) hard disk did not show up after replacing the failed one. As the TreuNAS CORE/FreeBSD command "camcontrol rescan all" doesn't work any more in TrueNAS SCALE I unfortunately had to reboot which then made the disk finally available. Is there any command I can use to re-scan for (new) disks in TrueNAS SCALE to stay online during this procedure?

[mcd]

I made sure I plugged my 4 drives in order with the SATA port on the board based on the labels printed on the board (SATA _1, SATA_2...). Would the sda, sdb, sdc designation by TrueNAS follow the same order as the board SATAx labels? what's a good way to cross reference the physical drive with the sdx designation?

[Dichedo]

Has it ever occurred to anyone creating these videos that the loud music in the background effectively renders your speech to incomprehensible set of words and voices? I leave the comment about the choice of the "music" as irrelevant (that was a lie, it sucks), but the volume?

[whateverrandomnumber]

To me the most difficult part is still finding out which physical hard drive needs replacing.

Any suggestions on that?

[mattruddick]

thanks man 1min in and all the info i need thanks

[jimholloway]

How would I replace a failed HD if I had TrueNas Scale running in an old PC that did not have hot swapable drives? Would I mark it unavailable then shutdown the TrueNas scale device and swap out the drive?

[HyPex-]

Can you do this same procedure replacing a smaller disk with a bigger one? Will the raid set pick up the extra capacity?

[DUXNOBIS]

Nice Video. Had two crashes in just 2 weeks. The last disk was just 1 week old and a Seagate Ironwolf Pro NAS. However since my installation (6x 8TB HDD) I hear the access "noise". Now one could say it is normal on a Z2 Raid to hear access/write noise but as I never built a similar NAS before I was wondering if you can copy what I am experiencing and the noise is totally normal, and if not if you could load up a little video where you show the noise of your disks. I hear the same noise every 5-10 sec. Strange...hope I am not killing my disks with some wrong settings. I am not rebooting every night or so. The truenas is more than well ventilated (4 be quiet silent wing 3) plus 3 fractal fans. average temp is 40°. Would be nice hearing from you guys.

[nkalyankumar]

I am thinking to use TrueNAS Scale over CentOS based ZFS storage for my new 200 TB NAS storage for various reasons like remote auto shutdown during power failure and sophisticated GUI monitoring. What's your opinion on TrueNAS scale and how is it performing from the time of installation?

[Shirois]

Thoughts on the Toshiba N300 as a NAS Drive?

[Artichoked]

Great vid. Maybe consider turning the music down in the future?

[CriticoolHit]

Whoa those head crashes are more than severe.

[billcarson]

I have no brand loyalty either. All HDs will fail eventually. That said, it's worth noting that not all WD RED Plus drives are equal to Seagate IronWolfs. Example - a 6TB RED is 5400 RPM/128 Cache while a 6TB IronWolf is 7200 RPM/256 Cache. Most of the time the price is similar but right now WD 6TB is about $20 lower. All things being equal, I'd grab that 7200 RPM Seagate!

[RobTownley]

It appears you have two Spare drives, why not use them?

[David_Quinn]

I am not loyal to any drive brand but I can say that every seagate I have owned has died right after there warranty and they have failed in this spectacular fashion.

[nickbarkas]

Personally I believe that wd red non pro cmr hdds got worse over the years. I have seen 2 fail miserably in Nas systems.

[sozonpv]

Why would i like listening to music watching the video. Why? Most people don’t.

[chrisparkin]

Looks like your hot-spare is still attached to your pool but not functioning as a spare. Do a zpool status from the CLI and then zpool detach big_pool [gptid-of-hot-spare] and you will be back in business.