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Scheduled Maintenance on January 3-4, 2015

Dear colleagues and students

ITS Maintenance Window on Jan 3-4, 2015

The following maintenance will be carried out on January 3-4, 2015 (this Saturday and Sunday) and the major services to be affected include HKU Portal, Internet service, email service, HKU website (www.hku.hk) and HKU Students' Union (HKUSU) websites.



Maintenance on

Service to be affected

Jan 3, 2015 (Sat)

7:00 pm – 11:00 pm

Firewall supporting the Centennial Campus network

The network access to Internet at the Centennial Campus will experience intermittent interruptions of 15 minutes during the window.

Jan 3 – 4, 2015
(Sat - Sun)

7:00 pm (Sat) –
3:00 am (Sun)

Staff email system (HKUCC1) to prepare for the coming upgrade to MS Exchange 2013

Possible service interruption in HKUCC1 mail service.

Jan 4, 2015

Midnight – 2:00 am

High-definition Radvision and Polycom multi-party conferencing system

Service suspension during maintenance.

Midnight – 6:00 am

Cisco IP phone servers for firmware update

All IP phones with numbers 3917-xxxx will experience intermittent interruptions, each of about 30 seconds.

6:00 am – 10:00 am

WiFi controllers supporting the WiFi service in the Centennial Campus and HKU Residential Colleges

There will be a 30-minute interruption in the WiFi service at these 2 locations.

7:00 am – 11:00 am

Internet router

Internet service will experience intermittent interruptions, each of about a few seconds within a 20-minute maintenance window.

9:00 am – 5:00 pm

Spam filtering service for all HKU email accounts for staff and graduates on graduate.hku.hk

Staff and affected graduates will not be able to check the spam quarantine email folder.

Affected graduates will not be able to receive new emails from 10:00 am to 1:30 pm.

9:00 am – 6:00 pm

Network on G/F - 5/F of Kadoorie Biological Sciences Building

Network services will be suspended.

2:00 pm – 3:00 pm

HKUSU web server for OS patch update

Service interruption in all HKUSU web sites.

2:00 pm – 3:00 pm

Learning Environment Booking System for booking facilities in the Chi Wah Learning Commons

Learning Environment Booking System will become inaccessible.

4:00 pm – 7:00 pm

New Web Application Firewall (WAF)

Intermittent interruptions of 5 minutes in Internet service, HKU Portal and HKU website.

For enquiries, please contact our Service Desk at ithelp@hku.hk or 3917 0123 during office hours; and call our Computer Room at 2859 2496 after office hours.

We apologize for any inconvenience that may cause.

K C Chang
Systems Team
Information Technology Services


Scheduled maintenance messages are shown at http://www.its.hku.hk/sysmt.
Messages about current service suspension, if any, are shown at the "Service Suspension" section of ITS homepagehttp://www.its.hku.hk and at the HKU App => Staff Corner or Student Corner => Service Suspension.