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Scrub Completed Successfully on the Main Pool

After adding my WD HC550 18TB drives to my HL15, I finally ran a full scrub on the main pool. The process just finished, and so far, everything seems to be working as expected.

Running the Scrub

For those unfamiliar, a scrub in ZFS is essentially a deep consistency check of the entire pool. It scans all the data, verifying integrity against checksums and attempting to repair any detected issues. Given that I recently swapped power cables on the HL15 backplane due to issues with slots 1-09 to 1-12, I wanted to ensure that everything was stable.

The scrub ran for about 20 hours, and thankfully, no errors were found. The pool is now in a healthy state.

System Performance During the Scrub

While the scrub was running, I kept an eye on system performance. Here’s what I observed:

  • Disk Activity: As expected, disk utilization was high, but I didn’t notice any major slowdowns.
  • CPU Usage: The scrub didn’t significantly impact overall performance, and services remained responsive.
  • Temperatures: All drives stayed within normal operating temperatures, with no overheating issues.

What's Next?

Now that the scrub has completed successfully, I’m feeling a lot more confident in the stability of the new setup. Next steps include:

  • Monitoring the drives over the next few weeks to ensure no unexpected failures.
  • Scheduling regular scrubs to maintain data integrity.
  • Continuing to fine-tune my storage setup, especially with my new JBOD002 (Supermicro CSE-216BE1-741JBOD) arriving soon.

Overall, it’s great to see the system running smoothly after the recent changes. I’ll post another update if anything unexpected comes up!