# Running XtraDB on Amazon Web Services?

**URL:** <https://forums.percona.com/t/running-xtradb-on-amazon-web-services/3505>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [May 27, 2014, 3:58pm UTC](https://forums.percona.com/t/running-xtradb-on-amazon-web-services/3505 "2014-05-27T15:58:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![no1youknowz](https://avatars.discourse-cdn.com/v4/letter/n/b782af/32.png) [@no1youknowz](https://forums.percona.com/u/no1youknowz)\
**Post date:** [May 27, 2014, 3:58pm UTC](https://forums.percona.com/t/running-xtradb-on-amazon-web-services/3505/1 "2014-05-27T15:58:50Z")

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I have 3 Servers running PXC on AWS.

I have 1 server running in each Availability Zone.

Amazon say they do maintenance on their boxes once a month and for about 30 minutes the server may go down. I don’t know, I have just started using them.

Has anyone experienced any issues with AWS from running a cluster stand point?

What if the Master goes down for about 30 minutes? What will this really affect.

I’m not too worried about 1 node going down for 30 minutes.

Thanks

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**Author:** ![przemek](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/przemek/32/3_2.png) [@przemek](https://forums.percona.com/u/przemek)\
**Post date:** [June 8, 2014, 9:01am UTC](https://forums.percona.com/t/running-xtradb-on-amazon-web-services/3505/2 "2014-06-08T09:01:13Z")

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What do you mean by ‘master’? 🙂  
All depends on the workload and gcache size set. If the writes that happened in the cluster during these 30 minutes can still fit in gcache - the node that had maintenance will sync with the cluster using IST state transfer and will continue functioning.