Tagged: Cloud computing
Collateral for my presentation at the New Jersey VMware User Group (NJ VMUG)
I was delighted at the chance to present at the New Jersey VMware User Group (NJ VMUG). The attendees posed excellent questions.
Thank you much to Ben Liebowitz for the invitation.
My presentation is called “Virtual Desktop (VDI) Performance Troubleshooting”
Here are the slides for the session:
Enable Microsoft Exchange 2010-2016 DAC mode
Description:
Datacenter Activation Coordination (DAC) mode is a property setting for a database availability group (DAG).
DAC mode is disabled by default and should be enabled for all DAGs with 2 or more members that use continuous replication.
That means the majority of Exchange DAG deployments need the DAC mode.
The DAC is most useful in a multi-datacenter configuration to prevent split brain syndrome, a condition that occurs when all networks fail, and DAG members can’t receive heartbeat signals from each other.
However, I suggest you always enable the DAC.
If you enable the DAC and you need to recover, the recovery takes less commands on the command line. Only the following commandlets will be necessary:
Stop-DatabaseAvailabilityGroup
Restore-DatabaseAvailabilityGroup
Start-DatabaseAvailabilityGroup
Also, if you did NOT enable the DAC, you cannot do so if you have a failure. The DAC must be enabled ahead of time.
Instructions:
Here is how to enable the DAC mode:
1. Go to Exchange Management Shell
2. Type the following, where DAG2 is your DAG name:
Set-DatabaseAvailabilityGroup -Identity DAG2 -DatacenterActivationMode DagOnly
More Information:
For more information, read this article:
Collateral for my presentation at the Workshop of the Association of Environmental Authorities of NJ (AEANJ)
I was glad for a chance to present at the Workshop of the Association of Environmental Authorities of NJ (AEANJ). There were great questions from the audience.
Thank you to attendees, Leon McBride for the invitation, Peggy Gallos, Karen Burris, and to my colleague Lucy Valle for videotaping.
My presentation is called “Data Portability, Data Security, and Data Availability in Cloud Services”
Here are the collateral files for the session:
Slides:
AEANJ Workshop 2016-slides-YuryMagalif
Video: