2 App servers in farm will be auto failover and load balanced?

Question

Dear all,
We are going to setup following SharePoint farm:
2 WFE
2 APP
2 OWA
2 SQL with shared NAS
We will have hardware load balance in front of 2 WFE. From my understanding, the 2 WFE will detect which APP server is available and send the request there.
Hence, if APP1 is down, all traffic come from both WFE will be directed to APP2.
But I am not so sure about the part about load balance. If all the 8 server instance are working properly, the new request come from WFE2 will be sent to APP1 or APP2? Or it depends on which service application is asking?
In addition, we planned to run all search components on APP servers. But the 2 APP servers are both 16GB memory which is lower than suggested specification.  I am considering whether I can assign all the search workload on APP2 while all the other on
APP1.
Thanks.
Mark

Answer 1

Here is a good artcicle on how SharePoint load balances service applications:
http://blogs.msdn.com/b/dtaylor/archive/2011/02/23/sharepoint-2010-service-application-load-balancer.aspx 
Yes you can create APP02 as search server but then service apps will not be redundant , so it would be better to run all the service apps on both the servers and if you see any memory issues, then scale it later.
As per
http://technet.microsoft.com/en-us/library/651dba4d-8751-4bd8-9492-f2842b2e1177(v=office.15)#HW_Enterprise , 16 GB is recommended for application server  so i think you should be okay unless there is very high load .
Amrita Talreja