https://community.extremenetworks.com/t5/faqs/fan-numbering-in-the-securestack-series/m-p/51528#M723 Article ID: 10819 <BR /> <BR /> <B>Products</B><BR /> SecureStack C3, C2, B3, B2, A2; firmware all <BR /> <BR /> <B>Goals</B> <BR /> Meaning of the "Fan 0 has failed." or "Fan 1 has failed." reference within syslog, logging buffer, and serial console messages generated upon failure of a fan; for example:&lt;162&gt; OCT 06 10:13:51 10.156.133.245-2 SIM[221852416]: bootos.c(1588) 1173 %%<BR /> Fan 0 has failed.<BR /> Meaning of the "Fan 1 has failed." or "Fan 2 has failed." reference within current.log messages (<A href="http://bit.ly/1cpN7UG" target="_blank" rel="nofollow noreferrer noopener">5743</A>) generated upon failure of a fan; for example:&lt;162&gt; MAY 18 17:31:00 10.17.99.21-1 SIM[147737568]: bootos.c(867) 40731958 %%<BR /> Fan 2 has failed.<BR /> Meaning of the "Fan1-status" and "Fan2-status" references seen in the output of a 'show system' query; for example:Fan1-Status Fan2-Status<BR /> ----------- -----------<BR /> Installed and Not Operating Ok<B>Solution</B><BR /> With C3/C2/B3/B2 firmware x.02.01.0006 and lower, and all A2 firmware:<UL>Syslog 'Fan 0' (current.log 'Fan 1', system 'Fan1') is any of the fans located on the rear of the SecureStack unit near the stacking cables.<UL></UL>Syslog 'Fan 1' (current.log 'Fan 2', system 'Fan2') is any of the fans located on the sides of the unit.</UL>With C3/C2/B3/B2 firmware x.02.02.0009 and higher:<UL>Syslog 'Fan 1' (current.log 'Fan 1', system 'Fan1') is any of the fans located on the rear of the SecureStack unit near the stacking cables.<UL></UL>Syslog 'Fan 2' (current.log 'Fan 2', system 'Fan2') is any of the fans located on the sides of the unit.</UL> Tue, 26 Nov 2013 20:55:00 GMT FAQ_User 2013-11-26T20:55:00Z https://community.extremenetworks.com/t5/faqs/fan-numbering-in-the-securestack-series/m-p/51528#M723 Article ID: 10819 <BR /> <BR /> <B>Products</B><BR /> SecureStack C3, C2, B3, B2, A2; firmware all <BR /> <BR /> <B>Goals</B> <BR /> Meaning of the "Fan 0 has failed." or "Fan 1 has failed." reference within syslog, logging buffer, and serial console messages generated upon failure of a fan; for example:&lt;162&gt; OCT 06 10:13:51 10.156.133.245-2 SIM[221852416]: bootos.c(1588) 1173 %%<BR /> Fan 0 has failed.<BR /> Meaning of the "Fan 1 has failed." or "Fan 2 has failed." reference within current.log messages (<A href="http://bit.ly/1cpN7UG" target="_blank" rel="nofollow noreferrer noopener">5743</A>) generated upon failure of a fan; for example:&lt;162&gt; MAY 18 17:31:00 10.17.99.21-1 SIM[147737568]: bootos.c(867) 40731958 %%<BR /> Fan 2 has failed.<BR /> Meaning of the "Fan1-status" and "Fan2-status" references seen in the output of a 'show system' query; for example:Fan1-Status Fan2-Status<BR /> ----------- -----------<BR /> Installed and Not Operating Ok<B>Solution</B><BR /> With C3/C2/B3/B2 firmware x.02.01.0006 and lower, and all A2 firmware:<UL>Syslog 'Fan 0' (current.log 'Fan 1', system 'Fan1') is any of the fans located on the rear of the SecureStack unit near the stacking cables.<UL></UL>Syslog 'Fan 1' (current.log 'Fan 2', system 'Fan2') is any of the fans located on the sides of the unit.</UL>With C3/C2/B3/B2 firmware x.02.02.0009 and higher:<UL>Syslog 'Fan 1' (current.log 'Fan 1', system 'Fan1') is any of the fans located on the rear of the SecureStack unit near the stacking cables.<UL></UL>Syslog 'Fan 2' (current.log 'Fan 2', system 'Fan2') is any of the fans located on the sides of the unit.</UL> Tue, 26 Nov 2013 20:55:00 GMT https://community.extremenetworks.com/t5/faqs/fan-numbering-in-the-securestack-series/m-p/51528#M723 FAQ_User 2013-11-26T20:55:00Z