IOPS Write increase causes email delivery delays in an Exchange Server 2013 environment

Symptoms

After you apply the cumulative update 8 in a Microsoft Exchange Server 2013 environment, you experience a large Input/Output Operations Per Second (IOPS) Write increase for FolderUpdateGroup on storage. This may cause delays in email delivery to the mailbox database. 

Cause

This is a known issue for FolderUpdateGroup.

Workaround

To work around this issue, disable indexing for the mailbox database by running the Set-MailboxDatabase "Mailbox Database" -IndexEnabled $false cmdlet.

Resolution

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Properties

Article ID: 3088487 - Last Review: Dec 15, 2015 - Revision: 1

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