any one know any solution to dissable APM at WD gold - WDC WD2005FBYZ-01YCBB2
Permanent solution , to dissable it or make it more reasonable , as it make drives almost not usable on raid aray.
what is funny i can setup error correction to any time , but why this so problem setup…
This is enterprice drives , what created for hight load , wtf why there apm how at buged green …
for greens wd was created long time ago wdidle3 , but now solution for enterprice drives ? wtf , that is some joke ?)
Did you check WDCkit user manual for the operation?
Use it at your own risk!
From WDCKit_Users_Guide.pdf March 2023 edition (for Windows x64 no-RAID version)
Page 49:
Page 119 and further:
i tested it , again not permamenth solution , after reboot it is again APM 96.
so it the same as use smartmontools , or other utils, i need permamenth dissable it or set to 254.
what is strange , when i dissable with that util then shutdown , after system load it is 128 but after next “reboot” , again 96 .
wdckit Version 2.16.0.0
Copyright (C) 2019-2023 Western Digital Technologies, Inc.
Western Digital ATA/SCSI/NVMe command line utility.
10/15/2023 05:22:07
Device Initiated Power Management : Enabled
Advanced Power Management : Enabled,Level=96
wdckit Version 2.16.0.0
Copyright (C) 2019-2023 Western Digital Technologies, Inc.
Western Digital ATA/SCSI/NVMe command line utility.
10/15/2023 05:22:13
Device Initiated Power Management : Enabled
Advanced Power Management : Enabled,Level=128
Can it be this way?
Some (which ones specifically, I honestly don’t know) features can be disabled to be modified by disk vendor (WDC) for some of its OEM customers’ (say HP, Lenovo, Dell, etc.) needs. E.g. Changing logical block size from 512 bytes to 4096 for supported 512e drives but it’s locked, etc.
I don’t know if the drive you’re dealing with is from such a computer OEM company, but… Is it possible to try a direct-from-WDC unit to eliminate this possibility?
Problem is it make that drives no usable at raid , as we have fixed TLER set to 7 second , it will be stay after reboot , but will return if do full shutdown , strange …
APM 96 , with 7s TLET unstable raid , and not usable at non raid 
If use windows , or linux it is not problem make aurunes scripts from “task’s” after boot/login/session.
but …
About re-format 512e to 4096 , how i know possible , only 512n maybe imposible format
WDC WD2005FBYZ-01YCBB2 is 512n .
Problem it is not locked , is simple no remember settings after shutdown.
and this is not OEM drives , it is standart drives from WD.
Then it seems the only is reporting to WDC support. Sad.
For TLER, not APM…
Maybe you’ve already read these but worth mentioning. They are old though, not sure if they’re up-to-date. From most current to oldest:
https://bbs.archlinux.org/viewtopic.php?id=263088
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