SD WAN and ISR 4k routers

[wmendozaOpenlink]

Hi Team

I am very new to the Cisco SD WAN solution, and I have a client who wants to migrate in that direction, but he has some ISR 4321, 4331, 4351 routers....
We want to use basic security features, like "IPS/IDS, URL-Filtering, AMP, SSL Proxy" so, these routers will need to go to 8GB of RAM, correct?

What else would be needed to avoid having any kind of issues in the future? I mean, I'll need to increase the disk and flash memory of these routers as well? Although the documentation only says that RAM would suffice, I really want to be sure. Can someone help me?

[balaji.bandi · Accepted solution]

Sure 8GB good enough, but if you have budget sugested to go for 16GB RAM.

below document very good for reference :

https://www.cisco.com/c/dam/en/us/td/docs/solutions/CVD/SDWAN/sdwan-firewall-compliance-deploy-guide-2020sep.pdf

Also check the End of Live of ISR 4K, Look at new model Cat 8K  (for Longitivity)

https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/select-isr4k-series-platform-eol.html

[wmendozaOpenlink]

Thank you very much, that was really helpful, i'm reading the documentation and it really cleared some of my doubts...