Increased sdb write latency on gemini makes it very sluggish

/dev/sdb occasionally has increased write latency (upwards of 2 seconds). This has occurred two times so far:

On 28th of November 2022:

On 5th of March 2023:

During both times, Extended offline was running in the background on that disk. This behavior has not been observed on the other three disks.

The above results in extended performance degradation which manifests even in nginx being unable to respond to HTTP(s) requests.

# smartctl -i /dev/sdb
smartctl 7.3 2022-02-28 r5338 [x86_64-linux-6.1.12-arch1-1] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Exos X14
Device Model:     ST10000NM0568-2H5110
Serial Number:    ZHZ54**J
LU WWN Device Id: 5 000c50 0c3******
Firmware Version: SS02
User Capacity:    10,000,831,348,736 bytes [10.0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database 7.3/5319
ATA Version is:   ACS-4 (minor revision not indicated)
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Sun Mar  5 08:20:28 2023 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled