High Availability Server in Unix Environment - Checking

Hi experts - I would like to know, how to check in any SAP - CI server is configured for High availablity option ?
I have Unix-Solaris installed in my work. Is there any Unix command would show this has HA options?
Would appreciate your help.
Thanks,
Raj

Hi Raj,
Try to execute the command cmviewcl -v at the OS level and as root user.
You will be shown the cluster package available and the node in which the cluster runs, if any.
Regards,
Varadhu

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How to restart Broadcast agent console server in unix environment

Hi All,
I have big issue..
When the BCA server shutting down automatically but its not restarting automatically in UNIX environment. So automatic shutdown facility resulting in BCA staying inactive!
So could you please help me how to enable the parameter option to automatic restart in unix env.(need the way how to do in UNIX env)
please help me..its urgent
Thanks,
Dilip

Hi,
When you Stop/Start Webi, the BCA is normally restartes (Process BcsWatch & BcsScdul)
I'm working in AIX and it works. don't you ?
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Cédric SAGORY

Not able to start Coherence Server on Unix environment

Hi,
I am trying to configure Coherence-Web on Weblogic server on Unix. But when i try to start the server getting the below error.
I am tried with Coherence 3.7.1 but say Bad class version so then tried with Coherence 3.6.1
And i used the below commond to run the server.
java -Xms128m -Xmx128m -Dcom.sun.management.jmxremote -Dtangosol.coherence.management=all -Dtangosol.coherence.management.remote=true -cp "$COHERENCE_HOME/lib/coherence.jar:$COHERENCE_HOME/lib/coherence-web-spi.war" -Dtangosol.coherence.cacheconfig=session-cache-config.xml com.tangosol.net.DefaultCacheServer
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Exception in thread "main" (Wrapped: Failed to load the factory) java.lang.reflect.InvocationTargetException
at com.tangosol.util.Base.ensureRuntimeException(Base.java:293)
at com.tangosol.net.DefaultCacheFactoryBuilder.getDefaultFactory(DefaultCacheFactoryBuilder.java:419)
at com.tangosol.net.DefaultCacheFactoryBuilder.getSingletonFactory(DefaultCacheFactoryBuilder.java:113)
at com.tangosol.net.DefaultCacheFactoryBuilder.getFactory(DefaultCacheFactoryBuilder.java:173)
at com.tangosol.net.DefaultCacheFactoryBuilder.getConfigurableCacheFactory(DefaultCacheFactoryBuilder.java:149)
at com.tangosol.net.CacheFactory.getConfigurableCacheFactory(CacheFactory.java:657)
at com.tangosol.net.DefaultCacheServer.getDefaultConfigurableCacheFactory(DefaultCacheServer.java:364)
at com.tangosol.net.DefaultCacheServer.main(DefaultCacheServer.java:197)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:501)
at com.tangosol.util.ClassHelper.newInstance(ClassHelper.java:662)
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at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:396)
at com.tangosol.net.DefaultConfigurableCacheFactory.loadConfig(DefaultConfigurableCacheFactory.java:382)
at com.tangosol.net.DefaultConfigurableCacheFactory.<init>(DefaultConfigurableCacheFactory.java:148)
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Caused by: java.io.IOException: The cache configuration is missing: "session-cache-config.xml", loader=null
at com.tangosol.run.xml.XmlHelper.loadResourceInternal(XmlHelper.java:316)
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I really appreciated the support.

Hi
This part of the stack trace...
Caused by: (Wrapped: Failed to load cache configuration: session-cache-config.xml) java.io.IOException: The cache configuration is missing: "session-cache-config.xml"...would suggest that the file session-cache-config.xml is not on the classpath of your application.
JK

Improving retrieval performance of essbase server in unix environment

HI,
Our production environment is unix system. can any one suggest settings which impact the retrieval performance and how to do these settings in unix environment.

Naveen,
For retrieval perfomance, Increase the retreival buffer size.
Default is 10 KB for 32 bit platforms and 20 KB for 64 bit.
make it 100 KB.
2. if the data block size is large ,and you are retriving cells across several blocks
set VLBREPORT true in the essbase.cfg configuration file
NOTE: this will increase the retrival process but , its applicable to the outlines which does not include dynamic calcs.
3. If the format of your reoport is of not much importance. group dense dimension in colums and groping sparse in rows ,this would be faster.
4. An applicaion/database does has a limt on its memory consumption.
So, RAM is the key for the speed.
Best part is that ,as you have UNIX operating system ,addressabe memory in your case is 3.9GB(which is very good) unlike 2 GB in case of windows.This is per application.
Sandeep Reddy Enti
HCC

Error while starting server in UNIX environment

Hi,
I am getting the following error while starting servers:
Oracle BI Presentation Services 10.1.3.4 (Build 080726.1900) are starting up.
Type: Error
Severity: 40
Time: Thu Jun 3 06:41:00 2010
File: project/webcatalog/localwebcatalog.cpp Line: 761
Properties: ThreadID-1
Location:
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     saw.catalog.local.loadCatalog
     saw.webextensionbase.init
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Error outside of Presentation Catalog occurred.
Type: Error
Severity: 40
Time: Thu Jun 3 06:41:00 2010
File: project/webcatalog/localwebcatalog.cpp Line: 761
Properties: ThreadID-1
Location:
     saw.catalog.local.readObject
     saw.catalog.local.loadCatalog
     saw.webextensionbase.init
     saw.sawserver
Error outside of Presentation Catalog occurred.
Type: Error
Severity: 20
Time: Thu Jun 3 06:41:00 2010
File: project/sawserver/main.cpp Line: 338
Properties: ThreadID-1
Location:
     saw.sawserver
Error loading security account .
Attempted to use an unconstructed lock.
Current Owner thread id: 0 (0x0)
Current thread id: 1 (0x1)
Lock pointer: 0xf2a2efa8
Lock created in file: server/include/Utility/Generic/SUGRecursiveLock.h
Lock created on line: 34
Lock created in function: NQRecursiveLock<NQCriticalSection>::NQRecursiveLock
Error in file: server/Utility/Generic/NQThreads/SUGCriticalSection.cpp
Error on line: 242
Error in function: NQCriticalSection::Acquire
/orapsdev/BI/setup/sawserver.sh[7]: 786638 IOT/Abort trap(coredump)
Kindly help to find a solution to it.
Regards,
Rahul

Hi
I came accrossed this kind of problems before, when I checked the log, I found almost the same error you mentioned and the BI Preenstation services is not started up.
As my experience, there would be something wrong with the presentation catalog, I changed the catalog to samplesales and it is ok, so I redeploy the specific catalog and then it is ok.
hope this can help.
thanks & regards
henry

What is HADR SEEDING TEST database in High availability server?

Hi All,
Our servers belongs to HA. Now, we could see a db like "HADR SEEDING TEST" has been created in our server.We don't know when was it created. How is it getting created and
what is it? Will it make any error if we drop this db?
Thanks,
Julie

I could find an answer for this question.
The db "HADR Seeding Test " will get created when creating an Availability Group in SQL Server 2012 using the New Availability Group Wizard in SQL Server
Management Studio.
Please refer the below link
https://www.sqlskills.com/blogs/jonathan/the-availability-group-wizard-and-the-hadr-seeding-test-database/
Thanks,
Julie

Installing NT Application Server in UNIX Environment

Hi,
I need to install a windows applications server. The CI and DB runs on HPUX in a Cluster Enviroment. I found severals SNOTES, the bottom line - i need a SAMBA Server.
But do i really need a SAMBA Server to share the /usr/sap Directory as sapmnt? Is there any way to avoid the samba Server?
thx for help

ok, i set up the samba service...
still having problems with the installation.
sapinst_dev.log
INFO       2011-06-24 09:26:27.786
           CJSlibModule::writeInfo_impl()
File system node D:/usr/sap/BWT exists already. Nothing to do.
TRACE      2011-06-24 09:26:27.786
NWInstall._createDirectories(\ \sdbtwa00/sapmnt/BWT/SYS, undefined])
TRACE      2011-06-24 09:26:27.786
FileMgt().getNode(\ \sdbtwa00/sapmnt/BWT/SYS, true)
TRACE      2011-06-24 09:26:27.786
FSPath(
sdbtwa00\sapmnt\BWT\SYS) done
TRACE      2011-06-24 09:26:34.536
FileMgt().getNode() done: undefined
TRACE      2011-06-24 09:26:41.287
FSPath(
sdbtwa00\sapmnt\) done
TRACE      2011-06-24 09:26:41.287
FSPath(
sdbtwa00\sapmnt\BWT) done
TRACE      2011-06-24 09:26:41.287
FSPath(
sdbtwa00\sapmnt\BWT\SYS) done
TRACE      2011-06-24 09:26:41.287
FSPath(
sdbtwa00\sapmnt\).isExisting(undefined)
TRACE      2011-06-24 09:26:43.537
FSPath(
sdbtwa00\sapmnt\).isExisting() done: false
TRACE      2011-06-24 09:26:43.537
FSPath(
sdbtwa00\sapmnt\).createDirectory()
TRACE      2011-06-24 09:26:43.537
FSPath(
sdbtwa00\sapmnt\)._create(DIRECTORY, undefined)
TRACE      2011-06-24 09:26:43.537
FileMgt().getNode(\ \sdbtwa00/sapmnt/, true)
TRACE      2011-06-24 09:26:45.787
FileMgt().getNode() done: undefined
TRACE      2011-06-24 09:26:45.787
FSPath(
sdbtwa00\sapmnt\).splitIntoParentAndFile(true)
TRACE      2011-06-24 09:26:45.787
FSPath(
sdbtwa00\sapmnt\) done
TRACE      2011-06-24 09:26:45.787
FSPath(\ \sdbtwa00\sapmnt\).splitIntoParentAndFile() done:
TRACE      2011-06-24 09:26:45.787
FSPath(
sdbtwa00\sapmnt\).isExisting(undefined)
TRACE      2011-06-24 09:26:48.037
FSPath(
sdbtwa00\sapmnt\).isExisting() done: false
ERROR      2011-06-24 09:26:48.037
           CJSlibModule::writeError_impl()
CJS-30129 Creating node $(DIR_INSTALL) with type DIRECTORY failed. Original exception text was: syslib.filesystem.nodeCreationFailed:
Unable to create node
sdbtwa00\sapmnt\ with type DIRECTORY: can't create parent node...
TRACE      2011-06-24 09:26:48.37 [iaxxejsbas.hpp:423]
           handleException<ESAPinstJSError>()
Converting exception into JS Exception EJSException.
TRACE      2011-06-24 09:26:48.037
Function setMessageIdOfExceptionMessage: nw.createNodeFailed
don't know where the problem is. the directory is accessable. the administrator has full rights, also the sidadm.
i'm not sure about the mixup of / and
in the part:
NWInstall._createDirectories([\ \sdbtwa00/sapmnt/BWT/SYS, undefined])
can windows handle this?

Hyper-V High Availability / Server Reboots

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UCCX stand alone to high availability

I have a production UCCX signle server deployment on 7.0(1). I am going to upgrade this to high availability and just needed to check out the procedure to upgrade the existing production server to the first node in HA. My 2nd server is already built, with UCCX and SQL 2000 so it is ready to go. Upon reading the upgrade guide it seems like all I need to do is upgrade SQL and then apply the HA license (it is sort of vague I feel for something this crucial). So you do not need to re-run the install to define first node?
Any opinion (or link to a more detailed document) will be appreciated.

I know this is an old post but for the sake of the community the answer is yes. if it was set up as a
stand alone node to begin with it can be changed to first node using the cet.bat tool to change the startup behavior of the appadmin page as described here.
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
http://www.cisco.com/en/US/products/sw/custcosw/ps1846/products_tech_note091
86a00805a7acc.shtml
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
1. On the CRS server, go to C:\Program Files\wfavvid\, and double-click the cet.bat file.
2. Click No when the warningappears.
3. Right-click the AppAdminSetupConfig object in the left pane, and select the option Create.
4. Click OK.
5 .In the new window, click the com.cisco.crs.cluster.config.AppAdminSetupConfig tab.
6. Choose Fresh Install from the drop-down list in order to change the value for Setup State.
7. Click OK
8. After you create the AppAdminSetupConfig object, log in with the user name Administrator and password ciscocisco, and then run the setup again.
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:"Times New Roman";
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;
mso-bidi-font-family:"Times New Roman";
mso-bidi-theme-font:minor-bidi;}
this will allow you to change the node from stand alone to first node by re-running the initial UCCX setup wizard.
Don Mynes

Best practice for highly available management / publishing servers

I am testing a highly available appv 5.0 environment, which will deploy appv packages to a Xenapp farm. I have two SQL 2012 servers configured as an availability group for the backend, and two publishing / management servers for the front end.
What is the best practice to configure the publishing / management servers for high availability? Should I configure them as an NLB cluster, which I have tested and does seem to work, or should I just use the GPO to configure the clients to use both
publishing servers, which I have also tested and appears to work?
Thanks,
Patrick Sullivan

In App-V 5.0 the Management and Publishing Servers are hosted in IIS, so use the same approach for HA as you would any web application.
If NLB is all that's available to you, then use that; otherwise I would recommend a proper load balancing solution such as Citrix NetScaler or KEMP LoadManager.
Please remember to click "Mark as Answer" or "Vote as Helpful" on the post that answers your question (or click "Unmark as Answer" if a marked post does not actually
answer your question). This can be beneficial to other community members reading the thread.
This forum post is my own opinion and does not necessarily reflect the opinion or view of my employer, Microsoft, its employees, or other MVPs.
Twitter:
@stealthpuppy | Blog:
stealthpuppy.com |
The Definitive Guide to Delivering Microsoft Office with App-V

URL to be used in high availability for Directory Server

Hi All,
I have an environment configured for high availability. I have two OVD and OID servers each in this environment, configured in high availability. What should be the value in the Server URL field of the Directory Server IT Resource in the OIM for this environment? In the normal environment, I had it as "ldap://ovdhost01:6501" and it was working fine. But since there are two servers here, I am not sure what URL to use in place of this. The entry for the two ovd hosts in the OHS is "idstore.com" which is configured on 6501 port. But I tried using the following URLs and none of them worked:
1. idstore.com
2. ldap://idstore.com
3. ldap://idstore.com:6501
4. ldap://ovdhost01:6501,ldap://ovdhost01:6501
Can someone help me know the correct URL to be used in this case?
Thanks,
$id

Not sure about OVD or OID but for SOA and OIM:
SOA:
XMLConfig -> XMLConfig.SOAConfig -> SOAConfig
Rmiurl -> t3://soahost1:soaport1,soahost2:soaport2
Soapurl -> Load balancer or web server url (without the /workflow context)
OIM:
XMLConfig -> XMLConfig.DiscoveryConfig -> Discovery
OimFrontEndUrl -> Load balance or web server url (without the /oim context)
And ofcourse on your LB or WebServer, you need to configure these:
SOA: http://docs.oracle.com/cd/E23943_01/core.1111/e10106/ha_soa.htm#CHDDJEGD
OIM: http://docs.oracle.com/cd/E21764_01/core.1111/e10106/imha.htm#BGBDFEIE
-Bikash

File Adapter vs BPEL interaction issue on high availability environment

Hi all,
i would really appreciate your help on a matter i'm facing about a composite (SCA) deployed on a clustered environment configured for high availability. To help you better understand the issue i briefly describe what my composite does. Composite's instances are started by means of an Inbound File Adapter which periodically polls a directory in order to check if any file with a well defined naming convention is available. The adapter is not meant to read the file content but only its properties. Furthermore, the adapter automatically makes a backup copy of the file and doesn't delete the file. Properties read by the adapter are provided to a BPEL process which obtains them using the various "jca.file.xyz" properties (configurable in any BPEL receive activity) and stores them in some of its process variables. How the BPEL process uses these properties is irrilevant to the issue i'd like to pose to your attention.
The just described interaction between the File Adapter and the BPEL process has always worked in other non-HA environments. The problem i'm facing is that this interaction stops to work when i deploy the composite in a clustered environment configured for high availability: the File Adapter succeeds to read the file but no BPEL process instance gets started and the composite instance gets stuck (that is, it keeps always running until you don't manually abort it!).
Interesting to say, if I put a Mediator between the File Adapter and the BPEL, the Mediator instance gets started, that is the file's properties read by the adapter are passed to the mediator, but then the composite gets stuck again 'cos even the mediator doesn't seem to be able to initiate the BPEL process instance.
I think the problem lies in the way i configured either the SOA infrastructure for HA or the File Adapter or BPEL process in my composite. To configure the adapter, i followed the instructions given here:
http://docs.oracle.com/cd/E14571_01/integration.1111/e10231/adptr_file.htm#BABCBIAH
but maybe i missed something. Instead, i didn't find anything about BPEL configuration for HA with SOA Suite 11g (all the material i found refers to SOA Suite 10g).
I've also read in some posts that for using the db as a coordinator between the file adapters deployed on the different nodes of the cluster, the db must be a RAC! Is that true or is possible to use even another type of oracle db?
Please, let me know if someone of you has already encountered (and solved :)) a problem like this!
Thanks in advance,
Bye!

Hi,
thanks for your prompt reply. Anyway, i had already read through out that documentation and tried all settings suggested in it without any luck! I'm thinking the problem could be related to the Oracle DB used in the clustered environment, which is not RAC while all documentation i read about high availability configuration always refers to a RAC db. Anyone knows if a RAC Oracle DB is strictly needed for file adapter configuration in HA cluster?
Thanks, bye!
Fabio

Choosing VM as high availability for BizTalk's SQL Server databases

Hi,
I'm lloking to choose the architecture of our BizTalk 2013 solution.
The application server will be build on virtual machines, but I still have interrogation about the SQL Server.
Is a SQL Server on a VM supported for BizTalk 2013 ?
Because in case of physical failure, the VM moved to another server can we considered the VM as a solution of High-Availability ?
thanks for your reply.

When the SQL VM fails over what attributes of the server will change? If everything including the server name, the mapped SAN locations (for Databases) and/or the versions of SQL will remain the same then it will behave like a temporary network outage between
the Front-end and the SQL.
If however, the failed over VM has a different set of mapped location for DB then you would need to establish a BizTalk Log Shipping between SQL VM 1 and SQL VM 2. In this scenario, the recovery will require time and cannot be automatic.
A word of caution though. If you have SLA's pertaining to transactions/messages per second with the customer then you might want to evaluate having dedicated boxes of SQL. The SQL Licensing is PER CORE and in a VIRTUAL ENVIRONMENT all the
CORES have to be licensed since the Virtualization does not permit you to BIND the VM to a specific set of CORES. The same would apply for your BizTalk Servers. This just might work out costlier as opposed to the dedicated server environment.
Regards.

High availability for file server and exchange with 2 physical servers

Dear Experts,
I have 2 physical server with local disks only. I want to setup below on same with high availability, please advise best prossible options. We will be using windows 2012 R2 Server..
1. Domain controller
2. Exchange 2013
As of now I am thinking of setting up below:
1. Install Hyper-v on both and create 3 VM on each as
-On Host A- 1 VM for DC, 1 VM for File server with DFS namespace and replication for file server HA and 1 VM for Exchange 2013 with CAS/MBX with DAG and DNS RR for Exchange HA
-On Host B - 1 VM for ADC, 1 VM for File server DFS member for above and 1 VM for Exchange 2013 CAS/MBX with DAG member
I have read on internet about new features called scale out file server (SoFS) in Windows 2012 Server but not sure that will be preferred for file sharing.
Any advise will be highly appreciated..
Thanks for the help in advance..
Best regards,

Dear Experts,
I have 2 physical server with local disks only. I want to setup below on same with high availability, please advise best prossible options. We will be using windows 2012 R2 Server..
1. Domain controller
2. Exchange 2013
As of now I am thinking of setting up below:
1. Install Hyper-v on both and create 3 VM on each as
-On Host A- 1 VM for DC, 1 VM for File server with DFS namespace and replication for file server HA and 1 VM for Exchange 2013 with CAS/MBX with DAG and DNS RR for Exchange HA
-On Host B - 1 VM for ADC, 1 VM for File server DFS member for above and 1 VM for Exchange 2013 CAS/MBX with DAG member
I have read on internet about new features called scale out file server (SoFS) in Windows 2012 Server but not sure that will be preferred for file sharing.
Any advise will be highly appreciated..
Thanks for the help in advance..
Best regards,
DFS is by far the best way to implement any sort of file server. Because a) failover is not fully transparent and does not happen always (say not on copy ) b) DFS cannot replicate open files so if you edit a big file and have node rebooted you're going to
lose ALL transactions/updates you've applied c) actually slows down the config. See:
DFS for failover
http://help.globalscape.com/help/wafs3/using_microsoft_dfs_for_failover.htm
DFS FAQ
http://technet.microsoft.com/library/cc773238(WS.10).aspx
(check "open files" point here)
DFS Performance
http://blogs.technet.com/b/filecab/archive/2009/08/22/windows-server-dfs-namespaces-performance-and-scalability.aspx
SoFS a) requires shared storage to run and you don't have one b) does not support generic workloads
(only Hyper-V and SQL Server) and c) technically makes sense to expand SAS JBOD or existing FC SAN to numerous Hyper-V clients over 10 GbE w/o need to invest money into SAS switches and HBAs and FC HBAs and new licenses FC ports. Making long story short:
SoFS is NOT YOUR CASE.
SoFS Overview
http://technet.microsoft.com/en-us/library/hh831349.aspx
http://www.aidanfinn.com/?p=12786
http://www.aidanfinn.com/?p=12786
For now you need to find some shared storage to be a back end for your hypevisor config (SAS JBOD from supported list, virtual SAN from multiple vendors like for example StarWind see below, make sure you review ALL the vendors) and then you create a failover
SMB 3.0 share for your file server workload. See:
Clustered Storage Spaces over SAS JBOD
http://technet.microsoft.com/en-us/library/jj822937.aspx
Virtual SAN from inexpensive SATA and no SAS or FC
http://www.starwindsoftware.com/native-san-for-hyper-v-free-edition
Failover
SMB File Server in Windows Server 2012 R2
http://www.starwindsoftware.com/configuring-ha-file-server-on-windows-server-2012-for-smb-nas
Fault
tolerant file server on just a pair of nodes
http://www.starwindsoftware.com/ns-configuring-ha-file-server-for-smb-nas
For Exchange you use SMB share from above for a file share witness and use DAG. See:
Exchange DAG
Good luck! Hope this helped :)
StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

Mac OS X Server High Availability

I'm getting two Xserve and a Vdeck for storage. The server will have the basic functions of file and network. I would like to implement a solution in high availability. In the microsoft world, the name is failover cluster.
The files and settings will be in storage. I need the second server performs the functions automatically if the first fails.
Can anyone help me?

There is an IP Failover feature on XServes. Check this article: http://docs.info.apple.com/article.html?path=ServerAdmin/10.5/en/c3fs29.html
It is for Leopard (10.5) Server, though I think that many things did not change.
Kostas

High Availability Server in Unix Environment - Checking

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