The Energy Policy Act of 2005 mandated that Daylight Savings Time in the United States would be extended, starting 2007, to start three weeks earlier and end one week later than in previous years. Software that automatically calculates daylight savings time should be updated to account for this change.

Sun StorageTek MirrorStore, IPStor, and VTL management software relies on the Java Runtime Engine (JRE). The RedHat v7.3 patch updates the JRE. Running the patch will ensure that local time is correctly calculated.

Additional information on the Daylight Savings Time Change for other products and applications can be found at http://www.sun.com/dst

This issue can occur in the following releases:

• MirrorStore without patch update-rh7.3-2.4.21-ipstor-01
• IPStor Software without patch update-rh7.3-2.4.21-ipstor-01
• VTL management Software without patch update-rh7.3-2.4.21-ipstor-01

If the described updates are not installed, MirrorStore, IPStor, and VTL management software will not accurately reflect the correct local time for replication schedules, TimeMark snapshots, log files, reports, and client/server synchronization. The impact dates will be from March 11, 2007 to April 1, 2007 and again from October 28, 2007 to November 4, 2007.

Using Network Time Protocol (NTP) will not resolve these issues. Without the patches, local time values will be incorrect for a three-week period. The values will be corrected once the original DST date of April 1, 2007 passes.

There is no workaround.

This issue is addressed in the following releases:

• MirrorStore with patch update-rh7.3-2.4.21-ipstor-01
• IPStor Software with patch update-rh7.3-2.4.21-ipstor-01
• VTL management Software with patch update-rh7.3-2.4.21-ipstor-01

To address the Daylight Savings Time changes, upgrade the OS version with the recommended patches. From the Customer Resource Center and/or the Uniform Software Repository, download patch ID "update-rh7.3-2.4.21-ipstor-01" and the associated txt file for instructions. If you need access to the patch, please contact Sun Support for assistance at 1-800-USA-4-Sun or your local service representative.

Patch Installation Procedure for VTL:

1. Log onto the VTL console
2. From the menu, select Tools -> Add patch
3. When warning message appears, press OK (VTL does not restart for this patch)
4. Browse to update-rh7.3-2.4.21-ipstor-01
5. Enter "YES" and select OK
6. Reconnect to the VTL server (VTL does not restart for this patch, but console connection must be re-established)
7. View the Version Info tab in the console to confirm patch was installed

Note: Applying the patch does not restart the VTL server, however user will need to reconnect to the VTL server after applying the patch. There may be additional instructions after the patch is applied, refer to the readme or .txt file associated with patch update.

Patch Installation Procedue for MirrorStore and IPStor:

1.Download patch to Appliance server.

2. Ensure that the downloaded patch is in the current directory and issue the following command:

     chmod +x update-isBBBBNNN
    (where BBBB = build number, nnn = patch number; example = is0883501)

3. Apply patch:

    - ./update-isBBBBNNN

Note: There may be additional instructions after the patch is applied, refer to the readme or .txt file associated with patch update.

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