Is cluster environment needed in alwayson?

Hi All,
I have a question, can we built 'Alwayson group' without a cluster environment?
If we can, what are the disavantages in building it?
Or
If we can not? Why we can not built in non-cluster environment?
I did some research in google some say we can built in standalone some say we can not, but I do not get the concrete answer. The agenda is we are planning to cut cost for clustering. Please help me to understand it.
Also Suggest me some blogs, books for the same.
Thanks
Best Regards Moug

Hello Moug,
You cannot build SQL Server AlwaysOn groups without Windows Cluster. Whatever resources out there in the web, saying that it can, are kind of misleading - there is a strict requirement from Microsoft that you need Windows Cluster to get advantage of the
AlwaysOn groups (you can check the
AOAG Overview and the
WSFC feature).
Also, since Windows Server 2012, Failover Clustering feature is supported in Standard edition as well, so that can help with the costs, I guess.
Regards,
Ivan
Ivan Donev MCITP SQL Server 2008 DBA, DB Developer, BI Developer

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Concurrent nodes reading from JMS topic (cluster environment)
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Hi,
Every servernode runs in its own java process.
Every java process has its own heap where it works in, with normal use its not possible to share memory between servernodes so also not caches that are stored in memory.
The only components that are shared in a Java "cluster" are the SCS instance that contains the Message and Enqueue Server, the DB, and the shared file system /sapmnt.
Try investigating JNI... search for "Java JNI Shared Memory"... this will need custom development and seems to be very low level and complex... If it was easy I guess SAP might had implemented in there WAS Java I gues.
Also take a look at:
http://www.google.nl/url?sa=t&source=web&ct=res&cd=1&url=http%3A%2F%2Figuanaworks.net%2F~shucker%2Fppt%2FJaDiSM.ppt&ei=3OqmSY6pF8Ov-QakpJnGAg&usg=AFQjCNFZCeSE-PIRpVIN39TDtGaeXMAKHA&sig2=mSGrGSf-5hT7roefFDj0lw
and
http://www.google.nl/url?sa=t&source=web&ct=res&cd=2&url=http%3A%2F%2Figuanaworks.net%2F~shucker%2Fpapers%2FJaDiSMPaper.doc&ei=3OqmSY6pF8Ov-QakpJnGAg&usg=AFQjCNF0cozxeRsKdOoHlynHWCdCv1zDmA&sig2=upwiB0HKiyxYJHaCZWiIeg
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Hi!
I am having trouble figuring out how to do sessions in web services.
I am trying to build an app that uses multiple GUI's in different languages (not java) and we want to implement our business layer with web services.
I need a session to save user settings, and user info so that I can avoid going to the database and ldap in every call.
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Edited by: Aishwarya Sharma on Oct 7, 2008 8:07 AM

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