After upgrade a NetBackup Appliance to version, "noncritical" fan firmware issues recur.

Article:TECH223075  |  Created: 2014-07-18  |  Updated: 2014-08-01  |  Article URL
Article Type
Technical Solution



A previously reported fan issue seen in NetBackup Appliances 2.5.x versions has been reported on NetBackup 5220 Appliances with JBODs running  The same "Noncritical" warnings on FAN 1 and 2 are reported for the Storage shelf, and the RPMs appear to be stuck around 8k RPMs.


enclosure_1_power_1_ack No 
enclosure_1_power_1_ackid ack:nbmedia-dd1:enclosure:power:EnclosureID-24_ID-1 
enclosure_1_power_1_errorstatus CRITICAL 2 Must equal [0] 
enclosure_1_power_1_state Warning 
enclosure_1_power_1_status Noncritical 
enclosure_1_fan_1_ack No 
enclosure_1_fan_1_ackid ack:nbmedia-dd1:enclosure:fan:EnclosureID-24_ID-fan1 
enclosure_1_fan_1_errorstatus CRITICAL 1 Must equal [0] 
enclosure_1_fan_1_lowwatermark 2000 RPM 
enclosure_1_fan_1_speed 8110 RPM 
enclosure_1_fan_1_state Failed 
enclosure_1_fan_1_status Noncritical 
enclosure_1_fan_2_ack No 
enclosure_1_fan_2_ackid ack:nbmedia-dd1:enclosure:fan:EnclosureID-24_ID-fan2 
enclosure_1_fan_2_errorstatus CRITICAL 1 Must equal [0] 
enclosure_1_fan_2_lowwatermark 2000 RPM 
enclosure_1_fan_2_speed 8010 RPM 
enclosure_1_fan_2_state Failed 
enclosure_1_fan_2_status Noncritical


52xx appliances with JBOD(s) running version


Fans run at higher speeds to compensate for higher temperatures and are stuck at high RPMs, producing a peculiar noise and raising an alert.


Symantec Corporation has acknowledged that the above-mentioned issue (ETrack 3535710) is present in the current version(s) of the product(s) mentioned in this article. Symantec Corporation is committed to product quality and satisfied customers. This issue was scheduled to be addressed in a future maintenance release or update of the product.

Please note that Symantec Corporation reserves the right to remove any fix from a targeted release if it does not pass quality assurance tests or introduces new risks to overall code stability. Symantec Corporation's plans are subject to change and any action taken by you based on the above information or your reliance upon the above information is made at your own risk.

For NetBackup Appliances, download and install the EEB (Emergency Engineering Binary) hotfix attached to this document.

Instructions for installing this hotfix can be found in the Related Article linked below.

If this issue is experienced with other NetBackup Appliance versions, please contact Symantec technical support, referencing this document and Etrack 3535710.


SYMC_NBAPP_EEB_ET3535636- is a hotfix for NetBackup 5200/5220 Appliances
SYMC_NBAPP_EEB_ET3535636- (39 kBytes)

Supplemental Materials


After upgrade to, customer seeing "non-critical" fan firmware issue that was seen previously on the 5220.

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