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My HDD is terribly slow when it comes to writing big files (4-5MB/s). KDiskMark result Copy from laptop to HDD via 1Gb net via FTP

I read that I should enable write cache, but hdparm says "not supported" HDParm write cache not supported

How could I enable it? I run Ubuntu 22.04 on ESXi 6.7 HDD is Seagate Barracuda ST10000DM0004 10TB SATA III 3,5" My drive settings in vCenter vCenter drive settings

Did some copy testing, run KDiskMark

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  • Note that Stack Overflow is for programming questions.
    – Jonas
    Commented 2 days ago
  • I presume VMWare, being a commercial product, has excellent support. I'd try opening a support ticket with them.
    – rustyx
    Commented 2 days ago
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    Where is write caching generally enabled: on the VM or the host? Is the Ubuntu machine the VM? Is the slowness limited to your VM, or is the host slow as well?
    – music2myear
    Commented 2 days ago
  • You run hdparm inside the VM?
    – Joep van Steen
    Commented 2 days ago

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