Slow HHD question

Hi,

Maybe a bit off Nethserver topic, but i need you guys experience.
I noticed the my data disk [WD Red Plus, 12TB] is slow on writing.

The disk is mounted a VM datastore and accessible via Samba shares (Debian 11).
I did the test with the DD command and the speed i get is approx 22Mb/s

This doesnt look normal, but what can i do if there is something to do ?

Any advise is welcome

Did you already check the hardware, see also ESXi S.M.A.R.T. health monitoring for hard drives

Did you maybe enable compression or some other function that may slow down the disk?

Thanks for your supprt.

SMART looks enabled

esxcli storage core device smart get -d t10.ATA_____WDC_WD120EFBX2D68B0EN0___________________D7GATZAN____________
Parameter                          Value  Threshold  Worst  Raw
---------------------------------  -----  ---------  -----  ---
Health Status                      OK     N/A        N/A    N/A
Read Error Count                   0      16         N/A    0
Power-on Hours                     98     0          98     14802
Power Cycle Count                  26     0          N/A    26
Reallocated Sector Count           0      5          N/A    0
Drive Temperature                  33     0          N/A    197569675297
Sector Reallocation Event Count    0      0          N/A    0
Pending Sector Reallocation Count  0      0          N/A    0
Uncorrectable Sector Count         0      0          N/A    0

I’ve no clue what happend.
Nothing has changed beside that hardware.
I’ve swapped the HDD’s from the old server to the new server.

When i check a HDD on my spare GEN8 server it runs normal.
Putting it in the new it is slow.

My SDD are running normal, so it is only with the SATA HDD

Did you already try a different SATA Port?
There may be different speeds depending on the controller.

Yes. Tried port 2.3 and 4
On my GEN8 server the port 3 and 4 were indeed reduced in speed (SATA300)
The GEN11 are all the same

I hink i try to install VMware from scratch. Maybe a driver issue?

1 Like

Then maybe, before doing anything drastic, try updating the driver first?

I want to be sure that the VMware is not holding old hardware or something like.
Just installed a new VMware on a different disk and unfortunately the problem remains.
So i can exclude my VMware.

As far as i know everything is up to date.
I installed the latest bios (apr-2025) and latest SPP (apr-2025)
My VMware is HPE version of febr-2025

How can/must i update the driver and most importantly which one.
How can i identify the correct driver?