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Comcast DNS Issues

We are currently experiencing issues with Comcast home internet in PG county not correctly handling DNS resolution for UMIACS hostnames, that can seem to be affecting connectivity to UMIACS.

If you are having problems getting to UMIACS hosts you can use our name servers to resolve those specific host names then connect using the IP addresses you lookup. Our name servers are,, and to use this information to get the ip address of the host you would use the command "nslookup", from a linux, windows or mac command prompt.

Unfortunately the problem seems to lie in an interaction of Comcast's name servers with those run by OIT, but we are looking into ways we can interact with those parties to get this issue resolved.

UMIACS Downtime 8/7/2010 10pm - 8/9/2010 ~2am

Facilities Management must complete the project to replace the fire safety systems in the UMIACS, CS, and OIT main data centers late at night on 8/7/2010 and during the day on 8/8/ 2010. The south side of AV Williams will be without power from midnight until 8pm on 8/8/ 2010.

The outage will disrupt operations in the UMIACS data center, network connectivity for all systems in AV Williams, and power to the x2xx and x1xx wings of AV Williams. Consequently, all technical services in UMIACS will be unavailable during this time. We will begin shutting down our services at 10pm on 8/7. Please note that services from other units including OIT and CSD will also be effected. We will make every effort to bring core services back online before 2am on 8/9/2010. We hope to have all services back online by the start of the business day on Monday 8/9/2010. We will keep this wiki up to date with progress or other important notices.

We regret the disruptive nature of this work but the scope of work necessitates a complete outage of our primary data center. Please send mail to with any questions or concerns.

UMIACS Staff Jira

We have upgraded our request tracker to Jira. Please email if you have questions or comments.

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Technical Reference

Welcome to UMIACS Wiki. This is the main place to find documentation and information about your account and the technical services that UMIACS offers. If this is your first time please start here Getting Started.

We provide many Core Services which include EMail, Backups and VPN.

We have lots of specific Lab Facilities that you may be interested in.

Please check here if you are interested in Ordering Equipment.