Comments on: Resilient File System (ReFS) and Microsoft Exchange Server

By: Rcik

Rcik — Wed, 11 Sep 2019 00:11:36 +0000

In reply to

. Hello Paul, I´m running my Exchange 2016 on Windows server 2016. I´ve noticed that the info and hotfixes are intented for windows server 2012. Do I need any particular KB for Windows 2016 for may DAG 2016 to work ok with Refs? or any particular warning before I move into it? Thanks in advanced!

By: Patrik

Patrik — Fri, 08 Feb 2019 13:50:50 +0000

I have a few Exchange 2016 server on Windows 2016 with ReFS disks mounted as mountpoints on an NTFS (4K blocksize) formatted disk. We have had some Microsoft guys here saying this is an issue and we should format the mountpoint disk with ReFS. Haven’t been able to find any information regarding this other than them saying it. They couldn’t point me to any article regarding it either. Does anyone know if this is true?

By: Tom Murphy

Tom Murphy — Thu, 17 Jan 2019 04:31:41 +0000

In reply to

Paul Cunningham

. https://docs.microsoft.com/en-us/windows-server/storage/refs/refs-overview#supported-deployments Basic disks include local non-removable direct-attached via BusTypes SATA, SAS, NVME, or RAID.

By: JUanM

JUanM — Wed, 14 Nov 2018 03:36:25 +0000

In reply to Paul Cunningham. Have you got Craig / Aymen about this point? Regards

By: Jino

Jino — Wed, 04 Apr 2018 10:25:52 +0000

we are using REFS file system for Exchange server 2016 , is there any recommended hotfix or update for windows server 2012 R2.

we are continuously facing issue with content index state failed.

Verified FileIntegrity is disabled on all volume ( GPT)

By: Paul Cunningham

Paul Cunningham — Mon, 26 Mar 2018 11:23:26 +0000

In reply to Craig Tolley. I can update the article if someone has a source for that. I don't see it on the Exchange storage config/options page on TechNet.

By: Craig Tolley

Craig Tolley — Mon, 26 Mar 2018 10:35:39 +0000

In reply to Aymen MAMI. I came here to make this exact same comment!

By: Aymen MAMI

Aymen MAMI — Tue, 06 Mar 2018 21:46:04 +0000

You need to mention that ReFS is not supported on RAID or SAN architecture. We only talking JBOD or S2D here.

By: Muhammad Asif

Muhammad Asif — Mon, 13 Nov 2017 19:40:20 +0000

If I try to create the mailbox database on ReFS formated drive then Exchange 2016 shows given below error. There is no issue if I try to create the mailbox databse on NTFS formated drive. Both drives have the same perssmissions. Is anyone else face same issue?

Both Adinistrator and System have full permissions.

There was a problem creating directory “D:\Program Files\Microsoft\Exchange Server\V15\Mailbox\REFSDB01” on server “TL-Main-EX01.thevlab.com”. In order to ensure that the Exchange data is kept secure, please create the directory, if it does not already exist, and configure directory permissions so that “SYSTEM” and the local “Administrators” group have “Full Control” for the folder, subfolders, and files. It is recomended that permission inheritance be broken so that only “SYSTEM” and “Administrators” have access to the directory.

By:

Paul Cunningham

The Real Person!

Author Paul Cunningham acts as a real person and passed all tests against spambots. Anti-Spam by CleanTalk.

Paul Cunningham — Thu, 19 Oct 2017 00:15:57 +0000

In reply to Benoit Boudeville. Indeed. And the storage/sizing calculator spits out scripts that specify the allocation unit size as well now. I've updated my example. Thanks for the heads up.