Comments on: Exchange Server 2013 Autoreseed in Action https://practical365.com/exchange-server-2013-autoreseed-action/ Practical Office 365 News, Tips, and Tutorials Wed, 07 Apr 2021 16:03:00 +0000 hourly 1 https://wordpress.org/?v=6.3.2 By: David https://practical365.com/exchange-server-2013-autoreseed-action/#comment-234200 Wed, 07 Apr 2021 16:03:00 +0000 https://www.practical365.com/?p=7817#comment-234200 Thanks for all the awesome info in the article. I have setup autoreseed in Exchange 2019 with bitlocker volumes. All volumes successfully autounlock after each reboot. When I try to test the event ID’s get to 1149 Disk Reclaimer, it shows two available volumes:
The Volume Manager found the following volumes:
UnknownVolumeCount=0
UnEncryptedEmptySpareVolumeCount=0
EncryptingEmptySpareVolumeCount=0
EncryptedEmptySpareVolumeCount=2
QuarantinedVolumeCount=0
NotUsableAsSpareVolumeCount=18
ErrorVolumeCount=0
ReFSVolumeCount=0
—UnEncryptedEmptySpareVolumeList—
—EncryptingEmptySpareVolumeList—
—EncryptedEmptySpareVolumeList—
D:\ExchangeVolumes\Volume16\ ( \\?\Volume{df9fa9d4-517c-43f0-8d98-e19428a8644e}\ )
D:\ExchangeVolumes\Volume17\ ( \\?\Volume{190fb710-e0ca-4f8f-a8fb-9a525fc5ae0e}\ )

Even though if shows two available volumes it never uses them. It just continues with the repeating errors that the DB is failed.
Any clues?
Thanks!!

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By: TS79 https://practical365.com/exchange-server-2013-autoreseed-action/#comment-231436 Tue, 22 Sep 2020 19:27:05 +0000 https://www.practical365.com/?p=7817#comment-231436 It seems that auto-reseed defaults to the active copy of the database as the source.
I would hope to see the reseed prefer a local source over a LAN connection. Throughput does not appear to be part of the auto-reseed logic.

Even when manually reseeding and specifying the source server, any error seems to cause the reseed to revert to the active database copy as the source. I resorted to activating the database copy within the data-center where the reseed was taking place after several attempts to manually specify the source failed.

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By: 偽物ブランド時計 https://practical365.com/exchange-server-2013-autoreseed-action/#comment-200780 Thu, 11 Apr 2019 12:07:28 +0000 https://www.practical365.com/?p=7817#comment-200780 ウブロブランドコピー(N級品)販売通販専門店
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By: jerry https://practical365.com/exchange-server-2013-autoreseed-action/#comment-160428 Tue, 17 Jul 2018 20:16:48 +0000 https://www.practical365.com/?p=7817#comment-160428 In reply to Rob R..

Rob,

I’m noticing the same thing you indicate in your post about the spare volume being renamed to a database after reseed and have also seen the throttling errors as well. I was wondering if the volume eventually repaired itself over that weekend in March?

Thanks,
Jerry

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By: Rob R. https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157623 Fri, 09 Mar 2018 17:25:26 +0000 https://www.practical365.com/?p=7817#comment-157623 In reply to Rob R..

For clarification, it is my spare volume label that is renamed as part of the reseed process.

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By: Rob R. https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157621 Fri, 09 Mar 2018 17:19:35 +0000 https://www.practical365.com/?p=7817#comment-157621 Hi Paul –
I’ve noticed that my volume label is being renamed to match the directory structure names (Starts as “Volume4” and is renamed to “DAG4_DB2”). Have you noticed this as well? I’m using ReFS with Windows Server 2016 and Exchange 2016 CU7. I’ve been working with MS (an SPFE and their support staff) but they have either only tested with NTFS or couldn’t make their lab work – neither can confirm that this is expected. It hasn’t caused any issues – the reseed completes successfully and the DB copies all return to a healthy status.

I’ve also noticed that if I attempt to simulate more than one disk failure within a few hours (by marking the disk offline), the Auto Reseed Manager goes into a throttled state (event 1117 in the Seeding crimson log). One server has been in this throttled state for 2 days so far – even with restarting the Exchange Replication Service & the spare being listed. I’m going to let it bake through the weekend & see if eventually completes. I’ve read on TechNet that the Disk Reclaimer will only run once every 24 hours (restarting the Replication Service seems to reset this timer) but it makes no mention of this task being throttled or limits on the number of disk failures that its able to process per day, etc..
I haven’t found any web articles to indicate that either of these is expected behavior so I thought I’d ask about your observations. Thanks!

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By: Paul Cunningham https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157448 Sat, 24 Feb 2018 01:01:30 +0000 https://www.practical365.com/?p=7817#comment-157448 In reply to Olu.

It looks a bit weird the first time you do it. Using multiple folder paths to point to the same underlying volume is not all that common in Windows Server admin, so a lot of Exchange admins just haven’t seen it done before.

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By: Olu https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157444 Fri, 23 Feb 2018 18:55:50 +0000 https://www.practical365.com/?p=7817#comment-157444 In reply to Paul Cunningham.

I guessed so. I used VMware workstation to build my lab and the underlying volume used is basically the same for the mount points. I’m trying to follow your implementation as I’m currently watching your videos on Pluralsight in preparation for the exam (70-345). I was wondering and I watched and re-watched your demos, in case I’m missing something. I also purchased your ebook on same subject and read autoseed section to ensure i fully understood the technique and process.

I appreciate your quick response.

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By: Paul Cunningham https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157440 Fri, 23 Feb 2018 05:39:08 +0000 https://www.practical365.com/?p=7817#comment-157440 In reply to Olu.

What you’re seeing is normal and expected if you’ve mounted the same underlying volume into two different folder paths. Each folder is basically a view of the same volume, so you’ll see both sets of db and log folders because it’s the same location.

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By: Olu https://practical365.com/exchange-server-2013-autoreseed-action/#comment-157439 Fri, 23 Feb 2018 03:27:18 +0000 https://www.practical365.com/?p=7817#comment-157439 Hi Paul, please what am I doing wrong? After mounting a volume to DB01 and DB02, if I create folders DB01.db and DB01.lo in DB01, the two folders get created in DB02 automatically. When I also created DB02.db and DB02.log in DB02 mount point, they also automatically got created in DB01. I know have something like below in DB01 and DB02
DB01.db
DB01.log
DB02.db
DB02.log

Whereas, DB01 should only contain DB01.db and DB01.log
If I delete DB02.db and DB02.log from DB01 mount point, they also get deleted in DB02 mount point.

Please, help.

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