Question Slow Write Speeds on HD: Normal SEQ1M Q8T1 Speed, very low SEQ1M Q1T1

Jul 29, 2024
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Hi I have two identical 6TB HDs TERRAMASTER D4-300 USB 3.1(Gen1) HDD DAS enclosure. When I transfer files to then I was getting slow speeds of 40-50 Mb/s on one and normal speeds of ~110Mbs on the other. I ran Crystal disk on both of them it seems like the problematic HD is actually has slow SEQ1M Q1T1 speeds slow to what I'm seeing where as it has good Q8T1 speeds.

The HD that is working properly has great Q8T1 and Q1T1 speeds. Any idea on how I can fix this?

Crystal Mark for Drive with issues:

Crystal Mark for identical Drive with no issues in the same DAS.