topic Re: ASA FAILOVER AND FLASH MEMORY SIZE , in Network Security

ASA FAILOVER AND FLASH MEMORY SIZE ,

petersrule2003 — Wed, 13 Mar 2019 01:00:56 GMT

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?

Re: ASA FAILOVER AND FLASH MEMORY SIZE ,

Jennifer Halim — Mon, 04 Oct 2010 11:25:19 GMT

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.

Re: ASA FAILOVER AND FLASH MEMORY SIZE ,

petersrule2003 — Mon, 04 Oct 2010 11:41:24 GMT

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.

Re: ASA FAILOVER AND FLASH MEMORY SIZE ,

Jennifer Halim — Mon, 04 Oct 2010 12:24:29 GMT

Absolutely correct, Peter.

Re: ASA FAILOVER AND FLASH MEMORY SIZE ,

Namit Agarwal — Mon, 04 Oct 2010 12:27:28 GMT

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

Re: ASA FAILOVER AND FLASH MEMORY SIZE ,

Jennifer Halim — Wed, 06 Oct 2010 09:32:59 GMT

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