Question Samsung 870 EVO ~ IOPS Read = 5900

[crosis999]

Drive: 4TB Samsung 870 EVO
File System: ext4

The drive is being used within QNAP QTS. Running a "Performance Test" i get IOPS Read: 5953 (Sequential Read: 528MB/s). Keep in mind the drive is almost full. I recently picked up a second 4TB Samsung 870 EVO. Added it to the NAS (it is in a linear raid with the first) then performed a separate test on the drive -- IOPS Read: 99691 (Sequential Read: 539.83 MB/s). The NAS uses SATA3 for all bays.

Why is the one drive way down at 5953? Is this the result of a nearly full drive even though i'm only performing an IOPS read. The drives are not being accessed at this time.

 

[USAFRet]

Keep in mind the drive is almost full.

I think you've identified the problem.

 

[crosis999]

I think you've identified the problem.

So you are saying running an IOPS Read requires free disk space (greater than my existing 13 GB) ? Please explain the logic.

 

[USAFRet]

So you are saying running an IOPS Read requires free disk space (greater than my existing 13 GB) ? Please explain the logic.

Please describe how this is configured.
'linear RAID'?

But yes...13GB free space on a 4TB drive is Too Full.

Which specific Performance Test in QTS?
I havd a TS-453sa and the system drive is a 480GB Seagate Ironwolf Pro SSD.