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6,455

Slower SMB read performance for large files in 22H2

Ned Pyle on Oct 03 2022 10:35 AM
Info and workaround for an issue seen in 22H2 Win11
7,669

SMB authentication rate limiter now on by default in Windows Insider

Ned Pyle on Sep 21 2022 11:01 AM
The SMb authentication rate limiter introduced in Windows Insider in the Spring is now ON by default
5,620

SMB compression behavior & settings changes

Ned Pyle on Aug 26 2022 01:55 PM
SMB compression behavior & config changes to make compression more likely
33.4K

SMB1 now disabled by default for Windows 11 Home Insiders builds

Ned Pyle on Apr 19 2022 10:40 AM
Latest Windows Insider Dev channel Home edition builds no longer have SMB1 client enabled by default.
6,732

SMB Authentication Rate Limiter in Insider builds

Ned Pyle on Mar 16 2022 12:29 PM
A new security mechanism for the SMB server service
2,168

Feedback on Hotpatch, SMB over QUIC, and Extended Network in Azure Edition

Ned Pyle on Mar 15 2022 10:27 AM
Share your feedback on Windows Server Azure Edition features
1,826

SMS WAC extension 2.6.2 released

Ned Pyle on Feb 10 2022 11:13 AM
Bug fixes available in SMS WAC extension 2.6.2
4,065

Windows Server upgrade and lifecycle survey

Ned Pyle on Nov 10 2021 01:34 PM
5 minute survey to help us make your lives easier
4,304

Register for Azure IaaS Day

Ned Pyle on Nov 09 2021 12:10 PM
Free event on Nov 17
9,114

The mystery of the slow file copy from the fast computer

Ned Pyle on Nov 05 2021 02:33 PM
A lesson in kernel memory manager behaviors 
5,671

SMB over QUIC is GA and we have lots of news!

Ned Pyle on Nov 04 2021 01:25 PM
Windows Server 2022 Azure Edition is GA too!
3,277

SDDC extension update in Windows Admin Center

Tina_Wu on Nov 02 2021 09:08 AM
Windows Admin Center now supports thin provisioning for new volume creation, nested resiliency for 2-node clusters, and ...
65.7K

Bogus event 2505

Ned Pyle on Oct 25 2021 01:25 PM
An event you can ignore for now
4,983

Windows 11 Insider 22449 update for SMB compression

Ned Pyle on Sep 14 2021 04:04 PM
Build 22449 changes SMB compression, learn more.
2,269

Azure File Sync survey

Ned Pyle on Sep 14 2021 01:53 PM
Roadmap feedback requested for AFS!
10.1K

Storage Innovations in Windows Server 2022

AndrewHansen on Sep 03 2021 09:45 AM
Learn what's new in Storage for Windows Server 2022
36.1K

Windows Server 2022 is full of new file services!

Ned Pyle on Sep 01 2021 09:17 AM
  Learn the new file services options included in Windows Server 2022
72.6K

Configure SMB Signing with Confidence

Ned Pyle on Aug 03 2021 11:26 AM
Unravel the mysteries of SMB signing with ease.
6,908

What the heck is the File Server "role" in Windows Server???

Ned Pyle on Jul 27 2021 11:57 AM
Understanding what the File Server "role" in Windows Server does.
10.4K

SMB over QUIC is now in public preview!

Ned Pyle on Jun 24 2021 12:03 PM
You can now evaluate SMB over QUIC in Windows Server 2022 and Windows Insider!
5,990

SMB Compression in Windows Server 2022 and Windows Insider

Ned Pyle on Jun 24 2021 10:59 AM
SMB compression is here! Watch a demo of Windows Server 2022 smooshing files on-the-fly like a champ.
5,384

Storage Migration Service now supports NetApp

Ned Pyle on May 20 2021 11:56 AM
Storage Migration Service now supports NetApp sources for migration to Windows Server
3,360

Discover cloud storage solutions at Azure Storage Day on April 29, 2021

Ned Pyle on Apr 13 2021 10:41 AM
Explore Azure cloud storage solutions for all your enterprise workloads with a special free digital event on April 29, 2...
5,214

Register for Microsoft Plugfest 33

Ned Pyle on Mar 11 2021 02:36 PM
Microsoft Plugfest 33 registration is here! Developers, partners, ISVs: register by March 23rd
5,152

SMS "HRESULT E_FAIL from COM component" workaround coming

Ned Pyle on Nov 11 2020 01:29 PM
"Error HRESULT E_FAIL has been returned from a call to a COM component" workaround coming
12.7K

Storage Migration Service October 2020 Update

Ned Pyle on Oct 20 2020 11:52 AM
New SMS features and fixes for the October cumulative optional update 
3,626

Azure Files NFS now in preview

Ned Pyle on Sep 16 2020 10:12 AM
NFS 4.1 is now available as an Azure Files service.  
3,795

Defending SMB Clients from Interception Attacks

Ned Pyle on Jun 29 2020 10:07 AM
Defending SMB clients from interception attacks. 
3,350

SMB Traffic Control

Ned Pyle on Jun 17 2020 10:55 AM
Increase your security by controlling SMB traffic's ingress, egress, and lateral movement
4,025

SMB over QUIC

Ned Pyle on Mar 02 2020 11:17 AM
Learn about SMB3 over QUIC - instead of TCP or RDMA - for hybrid and mobile computing.

Latest Comments

PadrePedro
in Slower SMB read performance for large files in 22H2 on Oct 05 2022 02:13 PM
Thanks for letting us know, @Ned Pyle!Pedro 
0 Likes
Ned Pyle
in Slower SMB read performance for large files in 22H2 on Oct 05 2022 09:49 AM
@ivicask Thanks, I'll make sure that's clear above. The variance can be quite large
0 Likes
ivicask
in Slower SMB read performance for large files in 22H2 on Oct 04 2022 11:59 PM
I would just want to correct 40% slower statement from Ned, im seeing way over 100% difference on setups like 10gb NICs (5gb/s vs 2gb/s) difference, or on SMB multi channel setups with multiple gigabit NICs.
1 Likes
Ned Pyle
in Slower SMB read performance for large files in 22H2 on Oct 04 2022 04:08 PM
I can't share too many details yet, but we know exactly where it is getting slower in Kernel, nothing to do with SMB or compression.
1 Likes
K_Wester-Ebbinghaus
in Slower SMB read performance for large files in 22H2 on Oct 04 2022 03:26 PM
Hi @Ned Pyle thanks for letting us know. May I share some thoughts and questions? 1. Could it be the "lazy-writeback", introed and enabled by default since 1809 builds could be a cause? Even when not utilizing SMB over network but usual local copy jobs e. g. from / two nvme one might notice a massiv...
0 Likes