DST 2007DST 2007████  Areas that observe daylight saving time Areas that observe daylight saving time

████  Areas that once observed daylight Areas that once observed daylight saving time saving time

████  Areas that have never observed Areas that have never observed daylight saving timedaylight saving time

Daylight Savings TimeDaylight Savings Time“DST 2007”“DST 2007”

Chuck TaylorChuck TaylorSenior Technical Account ManagerSenior Technical Account ManagerChuck.Taylor@microsoft.comChuck.Taylor@microsoft.comMicrosoft Premier SupportMicrosoft Premier Support

ObjectiveObjective1.1. To share information about DST 2007 To share information about DST 2007

for businesses for businesses

2.2. Discuss potential risks / impactDiscuss potential risks / impact

3.3. Look at some scenariosLook at some scenarios

4.4. Discuss Microsoft’s product Discuss Microsoft’s product approaches for dealing with DST approaches for dealing with DST 20072007

5.5. Listen to your feedback and plansListen to your feedback and plans

United States’ Energy Policy Act of 2005 is a United States’ Energy Policy Act of 2005 is a change to the rules setting when Daylight Saving change to the rules setting when Daylight Saving Time starts and ends. The changes were Time starts and ends. The changes were implemented as part of a federal energy implemented as part of a federal energy conservation effort, requires that beginning in conservation effort, requires that beginning in 2007 Daylight Saving Time (“DST2007”) start 3 2007 Daylight Saving Time (“DST2007”) start 3 weeks earlier and end 1 week later than current weeks earlier and end 1 week later than current rules. rules.

Previous DST Start New DST Start Previous DST End New DST End First Sunday of April Second Sunday of March Last Sunday or October First Sunday of November April 1st, 2007 March 11th, 2007 October 27th, 2007 November 4th,2007

Keeping Time on Keeping Time on Computer SystemsComputer Systems• Internal clocks / calendar with Internal clocks / calendar with

timezone and DST tablestimezone and DST tables• Local time vs Coordinated Local time vs Coordinated

Universal Time (UTC)Universal Time (UTC)• May or may not be synchronized May or may not be synchronized

with a time service via NTP with a time service via NTP (Network Time Protocol)(Network Time Protocol)

DST 2007 ChangesDST 2007 ChangesWhat types of systems are impacted? What types of systems are impacted? Just calendar/ scheduling software or Just calendar/ scheduling software or others?others?

What are some potential risks? Are What are some potential risks? Are there scenarios where the risks are there scenarios where the risks are low? Are there example scenarios low? Are there example scenarios where the risks are moderate or where the risks are moderate or high?high?

Why this isn’t just a U.S. issueWhy this isn’t just a U.S. issue

What are some implementation What are some implementation strategies for managing DST2007?strategies for managing DST2007?

Potential Risks / ImpactsPotential Risks / ImpactsNon-computer related DST impactsNon-computer related DST impacts* These examples come from David Prerau’s book, “Seize the Daylight: The Curious and Contentious * These examples come from David Prerau’s book, “Seize the Daylight: The Curious and Contentious Story of Daylight Saving time”Story of Daylight Saving time”

Computer-systems related DST Computer-systems related DST impacts:impacts:

Calendar / scheduling applicationsCalendar / scheduling applications

Date / time calculations (current & Date / time calculations (current & historical)historical)

Transaction logging (UTC vs Local Time)Transaction logging (UTC vs Local Time)

Tariff billing applications Tariff billing applications

What is Impacted by this What is Impacted by this Change?Change?

Category: Consumer Category: Consumer DevicesDevicesCategory Description Examples

Consumer Devices

Any device that provides date and time functionality that end users or consumers may use. During the transition window, if these devices are not updated with the correct DST information, notifications will not occur when they should (for instance, you may receive notification for a meeting 1 hour later) or triggered events will occur at the incorrect time (i.e. if you program your personal video recorder to record your favorite show, it will be an hour off).

Clock radios

mobile phones / PDA’s

portable music players,

programmable thermostats or HVAC control systems

personal video recorders

Category: Computer and Category: Computer and Network InfrastructureNetwork Infrastructure

Category Description Examples

Computer and Network Infrastructure

All computer or network equipment with operating systems which maintain their own automatic calendars (and hence, their own DST tables) will require updates.

Server computers

Desktop computers

Laptop computers

Network attached devices (routers, gateways, storage)

Category: Scheduling / Category: Scheduling / Calendar Applications & Calendar Applications & ServicesServicesCategory Description Examples

Scheduling and Calendar Applications or Services

Messaging applications that include calendar or schedule functionality or standalone calendar tools that organizations use.

Beyond the personal information management applications, there are other types of scheduling applications which may be impacted. These include systems such as transportation or cargo scheduling applications where multiple legs need to be coordinated across different environments. An offset of even 1 hour could result in physically impossible routing.

There are also scheduling / calendar systems which are used for system operations. These may include system task/ job schedulers or other maintenance tools which are scheduled to run at specific times or intervals. There are cases where the execution of these tasks needs to be tightly controlled due to the impact of the activity on the system they are intended to help maintain. Some examples would be system backup tools, virus scanning, scheduled archiving tools, storage compaction / management.

Microsoft’s Exchange and Outlook system

IBM’s Lotus Notes and Domino system

Peoplecube’s MeetingMaker

Novell’s Groupwise and Ximian Evolution

Other Unix systems using the iCal protocol for interoperability

Category: Date Category: Date CalculationsCalculations

Category Description

Applications which perform date calculations.

This is a more subtle impact for the DST 2007 changes and affects applications which perform date and time calculations at the granularity of hours or minutes. During the transition windows for the DST 2007 changes for instance, the total number of hours from 3/1/07 to 3/15/07 would be different depending upon whether the application is performing calculations based on DST 2005 or DST 2007 (there is 1 less hour). While this may not seem like much, imagine compound interest calculations done using hours.

Another example might be the tariff systems popular with many mobile operators where there are time periods during the day where calls from mobile phones are charged different rates or where there are bulk usage plans. The shift or offset during the transition windows for DST 2007 may have a significant impact on how billing and accounting is done for these types of usage plans.

Category: Activity Tracking / Category: Activity Tracking / LoggingLogging

Category Description Examples

Applications which track activity along with date and time information for audit or regulatory purposes.

An area where the correct handling of date and time information is vital is where activity logging is done for audit or regulatory compliance. For instance, certain types of applications used in manufacturing, financial services or Emergency Services such as automated bank machine transactions, Instant Messaging or Call Center applications log events with date and time information.

ATM machines

Corporate Instant Messaging systems

Manufacturing applications such as product batch labeling

Five Categories for System Five Categories for System ImpactImpact

http://www.microsoft.com/http://www.microsoft.com/dst2007dst2007

Date CalculationsE.g. Tariff A

pps

Scheduling and Calendar

Applications or Services

E.g. Microsoft Exchange /

Outlook

IBM Lotus Notes /

Domino

Novell Groupwise

Computer & Network

Infrastructure E.g. Servers, Laptops, Desktop PC’s

Consumer DevicesE.g. Clock radio, PDA’s, Mobile phones, Video

Recorders, Thermostats

Categories of Systems Impact by DST 2007 Changes

Audit or Regulatory

Tracking

Incr

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ompl

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to R

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DST

Chang

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CategoriesCategories

Servers and ToolsServers and Tools

Operating SystemsOperating SystemsKB 931836. Downlevel versions of Windows can be manually updated with tzedit.exe or scripts via KB 914387.

KB 931836. Also remember embedded versions of Windows.

KB 923953. Delivery method will vary with OEM’s, Mobile Operators and Business customers. OTA, tethered or a PIE download are possibilities.

KB 923027. Many of these systems are embedded or customized. You may need to work with the ISV for updates. Delivery mechanisms will vary

Schedule and Calendar Schedule and Calendar KB 926666. Exchange Server update for CDOEX. Server calendar re-basing tool.

KB931667. Desktop-based calendar re-basing tool for the Outlook Data Files. Downlevel compatible with multiple versions of Outlook Data Files.

Update for Entourage 11.3.3. Apple plans on supporting OS 10.4. Q.v., http://www.entourage.mvps.org/articles/daylight.ht

ml (non Microsoft site)

Other ProductsSQL Server Notification Server

Groove

SharePoint

BizTalk

CRM

Developer Tools

Microsoft Support OptionsMainstream Support

Windows Server 2003, Windows XP SP2, Exchange 2003, Exchange 2007

Premier customers receive remediation assistance at no charge from February 1 to March 1, 2007

Extended SupportWindows 2000, Exchange 2000, Outlook 2000

Extended Support for all is $4,000

Custom SupportWindows NT4, Exchange 5.5, Windows XPSP1

Custom Support AgreementPremier CustomerSupport Fee in ArrearsHotfix fee

User Communication is Key

Users should be made aware of the calendar issues resulting from Daylight Saving Time changes. Only the users will know if their appointments are correct.

Appointments scheduled during the delta period (March 11th – April 1st) need to be reviewed and considered suspect.

Users need to know that they will have to verify the meeting times themselves and with any other attendees.

Using informal methods such as documenting the meeting time in the subject or body of the meeting request may be beneficial.

Suggested Deployment Suggested Deployment SequenceSequence

ServersServers ClientsClients DevicesDevices

Messaging / Calendar Messaging / Calendar ServersServers

Scheduling ClientScheduling Client SoftwareSoftware

App ServersApp ServersApp ServersApp ServersApplicationsApplications

ToolsTools

Patch DistributionPatch DistributionWindows Update, WSUS, SMS, othersWindows Update, WSUS, SMS, others

Windows hotfix will not require reboot Windows hotfix will not require reboot so you can detect and script so you can detect and script additional server updatesadditional server updates

GPO’s for distributionGPO’s for distribution

Windows Mobile will be via OEM, Windows Mobile will be via OEM, Operators, or Microsoft DownloadOperators, or Microsoft Download

Windows CE will likely be via IHVWindows CE will likely be via IHV

Call to ActionCall to Action• Review your applications and Review your applications and

serversservers• Conduct a Risk Analysis on the Conduct a Risk Analysis on the

impact to your businessimpact to your business• Check with your suppliers, partners, Check with your suppliers, partners,

vendors for update and have a vendors for update and have a distribution strategy distribution strategy

http://www.microsoft.com/dst2007 http://www.microsoft.com/dst2007

Microsoft IT PlanningMSIT DST Assessment Checklist

http://go.microsoft.com/fwlink/?LinkId=83000  

MSIT DST Enterprise Response PlanHttp://go.microsoft.com/fwlink/?LinkId=83002   

MSIT DST Patching Overviewhttp://go.microsoft.com/fwlink/?LinkId=83004  

MSIT DST Exchange TZ Update Tool Guidance

http://go.microsoft.com/fwlink/?LinkId=83005  

MSIT DST Outlook TZ Update Package Guidance

http://go.microsoft.com/fwlink/?LinkId=83006

© 2007 Microsoft Corporation. All rights reserved.

Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.

The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market

conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation.

MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.