From Newsgroup: alt.comp.os.windows-11

Announcing Native NVMe in Windows Server 2025: Ushering in a New Era of Storage Performance | Microsoft Community Hub <https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/announcing-native-nvme-in-windows-server-2025-ushering-in-a-new-era-of-storage-p/4477353>

... more ....

Modern NVMe devicesrColike PCIe Gen5 enterprise SSDs capable of 3.3
million IOPS, or HBAs delivering over 10 million IOPS on a single
diskrCoare pushing the boundaries of what storage can do. SCSI-based I/O processing canrCOt keep up because it uses a single-queue model,
originally designed for rotational disks, where protocols like SATA
support just one queue with up to 32 commands. In contrast, NVMe was
designed from the ground up for flash storage and supports up to 64,000 queues, with each queue capable of handling up to 64,000 commands simultaneously.

.... more .....
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From Newsgroup: alt.comp.os.windows-11

"Mr. Man-wai Chang" <toylet.toylet@gmail.com> wrote:

Announcing Native NVMe in Windows Server 2025: Ushering in a New Era of Storage Performance | Microsoft Community Hub <https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/announcing-native-nvme-in-windows-server-2025-ushering-in-a-new-era-of-storage-p/4477353>

... more ....

Modern NVMe devicesrColike PCIe Gen5 enterprise SSDs capable of 3.3
million IOPS, or HBAs delivering over 10 million IOPS on a single
diskrCoare pushing the boundaries of what storage can do. SCSI-based I/O processing canrCOt keep up because it uses a single-queue model,
originally designed for rotational disks, where protocols like SATA
support just one queue with up to 32 commands. In contrast, NVMe was designed from the ground up for flash storage and supports up to 64,000 queues, with each queue capable of handling up to 64,000 commands simultaneously.

.... more .....

Wonder if it will reach non-Server editions, like Home or Pro. HKLM\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides doesn't exist on my Win11 Pro instance. I doubt adding it would have
any effect since it's very likely an option only for the Server edition.
Speed is addictive, and users even of non-Server editions strive for
best performance (that is bug-free and stable).
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From Newsgroup: alt.comp.os.windows-11

On Sun, 12/21/2025 1:28 PM, VanguardLH wrote:

"Mr. Man-wai Chang" <toylet.toylet@gmail.com> wrote:

Announcing Native NVMe in Windows Server 2025: Ushering in a New Era of
Storage Performance | Microsoft Community Hub
<https://techcommunity.microsoft.com/blog/windowsservernewsandbestpractices/announcing-native-nvme-in-windows-server-2025-ushering-in-a-new-era-of-storage-p/4477353>

... more ....

Modern NVMe devicesrColike PCIe Gen5 enterprise SSDs capable of 3.3
million IOPS, or HBAs delivering over 10 million IOPS on a single
diskrCoare pushing the boundaries of what storage can do. SCSI-based I/O
processing canrCOt keep up because it uses a single-queue model,
originally designed for rotational disks, where protocols like SATA
support just one queue with up to 32 commands. In contrast, NVMe was
designed from the ground up for flash storage and supports up to 64,000
queues, with each queue capable of handling up to 64,000 commands
simultaneously.

.... more .....

Wonder if it will reach non-Server editions, like Home or Pro. HKLM\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides doesn't exist on my Win11 Pro instance. I doubt adding it would have
any effect since it's very likely an option only for the Server edition. Speed is addictive, and users even of non-Server editions strive for
best performance (that is bug-free and stable).

It's not ready quite yet. Patience.

For one thing, there is a drastic mismatch on queuing.
We will need to hear the story of what the plan is there.
Presumably the OS will query the drive, figure out from
its class that only a single queue of 32 is possible, and
then it will set up the interface that way for actual usage.

The purpose of queues at one time, was to allow the drive
CPU to compute the best order of completion for operations,
taking seek time into account. NVMe don't have conventional
seek time, and the access time is relatively constant
for each operation.

Where any whizzy interface comes into play, is if something
can be done in a "zero copy" way. That would buy some performance.
Whether zero copy is currently present, who knows.

But queuing by itself, I'm not convinced this buys a whole
hell of a lot for desktops. Maybe only a synthetic 4KB random
write test, benefits from the queue. ... and only for the
PCIe Rev5 NVMe with the 3 million IOPs rating. NTFS does
10,000 operations per second, on a good day, and deletes
in NTFS are extremely slow. I'll wait for the dog and pony show.

Paul
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