ASA FAILOVER AND FLASH MEMORY SIZE ,

Answered Question
Oct 4th, 2010

Hi All,

i was going thru yusufs Network security technology and solutions book and it says flash memory size has to be the same on both units doing failover but in the CERT flash cards for CCIE security it says flash memory size does not have to be the same.

Does the flash memory size have to be the same for both units perfoming failover?

I have this problem too.
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Correct Answer by Jennifer Halim about 6 years 3 months ago

Please kindly find the official answer from the ASA configuration guide:

http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/ha_overview.html#wp1077536

Hope that answers your question.

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petersrule2003 Mon, 10/04/2010 - 04:41

Thanks Jennifer ,

So Flash memory size does not have to be same on both ASAs , but it is recommended that both flash memory sizes are the same.

Jennifer Halim Wed, 10/06/2010 - 02:32

Please kindly mark all post answered if you have no more question and if the post is answered. Thanks.

Namit Agarwal Mon, 10/04/2010 - 05:27

As per the Cisco Documentation http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/ha_overview.html#wp1077536 related to failover, it mentions that we can have different flash sizes but it is recommended that we have equal flash sizes. The device with the smaller flash size might not have the capacity to store all the images and the config from the device with larger flash during failover.

I hope that helps

Thanks,

Namit

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