Netra ct900 running SunVTS should modify fan speed.

Asset ID:	1-73-1020830.1
Update Date:	2010-08-27
Keywords:

Solution Type FAB (standard) Sure

Solution 1020830.1 : Netra ct900 running SunVTS should modify fan speed.

Impact

The Netra ct900 can overheat if many internal cp3260 blades run SunVTS.

Contributing Factors

Netra ct900 with cp3260 blades running SunVTS.

Symptoms

If a Netra ct900 with cp3260 blades runs SunVTS for an extended period of time, it could overheat due to higher than normal resource utilization. This issue is aggravated if the system is located at high altitudes (above 3000 feet or 915 meters), and is aggravated on a fully loaded chassis and blades with maximum memory.

Root Cause

SunVTS places a higher than normal resource load on the system, which can cause blades to have a higher than normal temperature. This can cause cp3260s to operate above their specified temperature limit.

Corrective Action

Workaround:

See Resolution section below.

Resolution:

Modify the default fan settings ONLY while running SunVTS by commenting out the following line if ShMM file /etc/shelfman.conf with a # in collumn 1 and then reboot the ShMM:

CARRIER_OPTIONS = SUNCT900

This setting is to be changed back after SunVTS completes and the ShMM rebooted.

References:

Radiance ID: 71141190

For information about FAB documents, its release processes, implementation strategies and billing information, go to the following URL:

http://tns.central/fab

For Sun Authorized Service Providers go to:

http://tns.central/SPE/fab/

In addition to the above you may email:

FAB-Manager@sun.com

Internal Contributor/submitter
Donald.Drygalski@Sun.COM

Internal Eng Responsible Engineer
Sreedhar.Govardhana@Sun.COM Responsible Manager: Thomas.Giles@Sun.COM

Internal Services Knowledge Engineer
Joe.Davis@Sun.COM

Internal Eng Business Unit Group
SSG NSN (Netra Systems and Networking)

Internal Sun Alert & FAB Admin Info
10-Aug-2009: Completed draft and sent to Extended Review.
12-Aug-2009: No feedback from Ext Rvw - sending to Publish.
19-Nov-2009: Corrected Product Name to swoRDFish inconsistency.

Attachments

This solution has no attachment