Came across this popup from Sophos. Apparently, it doesn't need updating but it subsequently downloads and installs three update packages!
Monday, November 7, 2011
Saturday, July 30, 2011
Multicast vs. Unicast performance
Recently at a customer site, we decided to compare the performance of multicast and unicast. The environment for the test consisted of the following pieces:
Results
Multicast - 41 minutes
Unicast - 9.5 minutes
We monitored the network performance and WDS showed quite a bit more network usage during the multicast than during the unicast deployments. So, based on this customer's configuration and imaging process, Unicast is the preferred choice.
There are important considerations though:
- Windows Deployment Services (WDS) server running on Windows Server 2008 R2.
- 24 Dell Precision T3400 client computers.
- A 10/100 switched network, with all computers using 1GB network adapters.
- PXE boot.
- Windows 7 Enterprise image.
Results
Multicast - 41 minutes
Unicast - 9.5 minutes
We monitored the network performance and WDS showed quite a bit more network usage during the multicast than during the unicast deployments. So, based on this customer's configuration and imaging process, Unicast is the preferred choice.
There are important considerations though:
- Is the imaging taking place during business hours?
- Is the imaging limited to 50 computers or less at one time?
- Does the network support multicasting?
Thursday, April 28, 2011
Error message - bigger than unlimited?!
I came across this error today:
Microsoft.Exchange.AirSync.AirSyncPermanentException
Exception message: The size of attachment 10:15811:0 is bigger than unlimited, which is the size limit that is defined in the Exchange ActiveSync mailbox policy.
Microsoft.Exchange.AirSync.AirSyncPermanentException
Exception message: The size of attachment 10:15811:0 is bigger than unlimited, which is the size limit that is defined in the Exchange ActiveSync mailbox policy.
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