I made a mistake on my server. I decided to add disks to both of my pools at the same time and run the ZFS expansion processes simultaneously. Of course, it went wrong—both of my pools are “suspended,” and I have two “faulted” disks in each pool. In my defense, the UI is pretty poorly designed, bec…

You should probably replace the SATA card with a true HBA and make sure the HBA has excellent cooling airflow over the heatsink. Some users add a fan. What’s all the noise about HBA’s, and why can’t I use a RAID controller? What's all the noise about HBA's, and why can't I use a RAID con…

Full hardware details along with how the disks are attached could help. You might want to run SMART Long tests on your drives and view the results to make sure you don’t have bad or failing disks. Are all the disks CMR and not SMR type?

Please provide a full description of your hardware. [image] Joes Rules to Asking for Help Resources Purpose: To assist people posting clear and informative requests for help and to define the absolute minimum information required in order to provide the helper…

Thank you very much for your prompt responses. Here is some additional information. Regarding my computer’s hardware these are all non-professional, secondhand parts: Motherboard: Asus G11CD RAM: 32 Gb Processor: Intel Core i5-6400 2.70GHz SSDs: Crucial CT2000MX500SSD1 HDDs: Seagate ST8000VN004-2M…

[image] Narrow1276: The PCIe/SATA card likely acted as a bottleneck when I ran two expand operations simultaneously. :index_pointing_up: Looking up the specs, this card is four old ASM1061 SATA controllers (PCIe 2.0 x1, 2 ports) and a PI7C9X2G608GP PCIe switch (2.0 again, 8 lanes) from a com…

Thank you so much for all this information. I’m so sad to discover the issue with RAID controller cards only now. I would have saved money, my hair, and a lot of time! I didn’t think I was buying a cheap card, brand-new—it’s even more expensive than most HBA cards. I really got ripped off! I’m keepi…

One thing we have seen occasionally, is that someone did not setup regular ZFS pool scrubs. It is possible without regular scrubs, and old data that is nor normally read, you could have had silent data corruption awaiting for you to find it. Now this should not have caused your new disk to fail. But…

I ordered an HBA card—it’s on its way! In the meantime, I reconnected an old SATA controller card with 4 SATA ports. And surprise—everything works, no errors. To be absolutely sure, I restarted a scrub; it’s still running as I write this. It seems that the “expand” and “scrub” tasks are progressing …

Good that you’re on your way to recovery. But may I ask what exactly is this new SATA card, and why you’ve pulled it out rather than using motherboard ports? These usually are your most reliable SATA ports. As you’ve found out, “SATA cards” are potentially dangerous. The one you used was not even …

The new card I just bought is actually an LSI 9300-16I. I only have 4 SATA ports on my motherboard, so in order to connect the 5 SSDs and 3 HDDs I had until now, I’d used a Chinese SATA controller card with 4 additional SATA ports for years. To add more drives to my server, I bought the StartTech ca…

[image] Narrow1276: 9300-16I This is a very spicy card. Make sure to slap a fan directly onto it and that it runs the latest IT firmware on both controllers.

How to recover data from a suspended pool

TrueNAS General

etorix July 14, 2026, 5:04pm 3

Please provide a full description of your hardware.

4+1 SSDs and 3+1 HDDs make for quite a few drives, so my suspicion is that you have some dubious SATA controller in the mix…

Topic		Replies	Views
Degraded ZFS Pool Magically Healthy Again TrueNAS General	9	149	March 9, 2026
Storage Health question TrueNAS General	45	434	April 7, 2026
My experience buying and flashing a used LSI HBA (SAS9207-8i, aka SAS9208-8i, aka 2308) to replace my "dodgy port multiplier" TrueNAS General SCALE , Hardware , Resource , SAS	21	5833	June 15, 2025
Recommendation - Which HBA Card to USE With 8 Drives? TrueNAS General	27	2851	July 9, 2025
Fresh install of True Nas scale TrueNAS General	48	682	August 27, 2025

How to recover data from a suspended pool

Related topics