Cisco Expressway Core & Edge Cluster, or Disaster Recovery Setup

Hi All,
Dear experts,
I have two sites HQ & Branch.below are my questions for Expressway Core & Edge Cluster
1. Can i create one cluster for 6 sever for Expressway Core and distribute 3 server in HQ & 3 server in Branch for HA
2. Can i create one cluster for 6 sever for Expressway Edge and distribute 3 server in HQ & 3 server in Branch for HA
3. How would be the DNS SRV records and call flow work if the main site Expressway Edge goes down in HQ. How the Branch Side Expressway Edge becomes active for B2B calls.
4. What is the best design to have disaster recovery for Expressway core and Expressway Edge between Sites(HQ & Branch)
Regards,
Irf

Regarding 1 and 2, as long as the round trip delay is no more than 30ms maximum, you should be fine. I presume the HQ Branch offices for the Expressway-Core have a shared internal network, since the Core goes inside the corporate network, while the Edge goes in the DMZ or outside the network for public access.
For 3, as long as you have your SRV records setup correct, you can set the priority of which office gets used first, and then second, in case of a failure.
I don't have an answer for 4 unfortunately.

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Need help for Disaster Recovery setup and configuration

Hi Gurus.
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But this is little more time consuming. We are planning to do something which will might save our time.
We want to create one Application instance on Central instance on current production server. This instance will be "deactivated" and will not run on production server.
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e.g
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create new instance profile -> P01_D03_prdhost1, START_D03_prdhost1
this configuration will be created but SAP instance will not be started. It will be copied to Disaster Recovery new site and in that new network , there we can start this new application instance.
Please let me know if we can do that ? if yes, are we going to face any issue in production?
Other than mentioned above, what FileSystem we need to take care for creating new instance?
Any help will be highly appreciated.
Thanks in advance
Best Regards,
Basis CK

Hi!
Sorry but your scenario is a little bit confusing.
Let me guess if I understood, you want to configure a "virtual" instance to be able to use it in case of DR.
I don't advise you to do things that way. Why not use virtual hosts and virtual instances like we do when implementing instances within a cluster or metrocluster.
You must have the license from DR server installed. I you use virtual hosts all DR issues like printers, logon groups, RFC groups, etc... will be solved.
If you use virtual hosts and virtual instances all you need to do is replicate the environment into DR site, restore the system and start production.
Of course... you are using UNIX and within UNIX world all these things are much easier.
Bear in mind that if you have JAVA instances then I think this is the only recommended procedure.
Cheers,
FF

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I am trying to setup a DR site for our portal system. We are using EMC Recover Point to do the SAN replication between Production and DR site. We are using MSCS cluster with one CI and DI in Production. For DR, we are planning to go with a distributed installation with one portal and database node.
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T4-1 rack mount server as a remote server for disaster recovery setup.

Hi,
I would like to ask some basic questions, as Solaris is not my area.
1)
T4-1 server is a rack mount server. Now, we would like to use it for DR purpose. Can we keep this rack mount server on remote location without conversion kit (to use it as a tower server).
2)
As I am new to this, would like to ask a basic question. This T4-1 server has 4 * 300GB hdd. To expand storage capacity, we would like to add hard disks to this server. Do we have to add 300gb hard disks only ? or we can add 2 new 600 GB hard disks.
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Disaster Recovery Solution

I have 2 copes of the same database on 2 different server at two different locations. I have to synchronize the data 100% between the two databases... Please help me to select an appropriate solution to accomplish this.
The 2 databases should be always online
What I can think of is
- Merge Replication.
- Transactional Replication with Updatable subscription..
If you can point some other solutions that would be really great... how about Mirroring.. If I use this I may need a 2 way mirroring... is this possible.

Hi Sudhakar,
According to your description, there are lots of built-in ways in SQL Server
to make two servers synchronize. Some points you should take into account, for example, how much bandwidth and latency between two server, and the size of two database, how often and how much do data change and so on. you can choose the method
most suited for your needs. Merge replication allows various sites to work autonomously and later merge updates into a single. As other post, you can choose replication as a disaster recovery solution. In database mirroring, secondary database
is in an offline mode while mirroring is in place. This can ensure integrity in the secondary database in the event of a failover being required.
For more information, see:
Selecting the Appropriate Type of Replication:
http://technet.microsoft.com/en-us/library/ms152565(v=sql.105).aspx
Replication VS Mirroring, and what to use for a Disaster Recovery setup:
http://simplesql.blogspot.in/2011/01/replication-vs-mirroring-and-what-to.html
Thanks,
Sofiya Li
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Sofiya Li
TechNet Community Support

Is WebEx Enabled TelePresence supported with Expressway Core and Edge?

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http://www.cisco.com/c/dam/en/us/td/docs/telepresence/infrastructure/tms/config_guide/cmr_hybrid_config_guide_tms_14_4.pdf
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I need document for Disaster Recovery server for SAP? I have to configure the DR Server If you have, please share this document if possible.
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Can someone share experience/knowledge of disaster recovery scenarios in MSCS/SQL Server/SAP. One of our customer has R3/SQL Server2000/Win 2003 (Cluster).
We would like to evaluate best possible options for the Disaster Recovery which are supported by SAP.
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1. Log shipping
2. Standby Database
3. Restore backup on new cluster
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Any links to documents/blogs will be helpful.
Thanks,
Manoj

> I am confused. Option 3 will be restoring backup
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> and 4 will be sapinst. Isn't it? Are both options supported by SAP?
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The standard installation documentation cover a cluster installation.
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If you have a cluster then you have a high availability already. If a node fails, you will "just" reinstall that node and put it back into the cluster.
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Cisco BE6k and VCS Core/edge

Dear all,
There is a new Be6k High density in the testing environment.
However, we don't have clear picture on the deploying VCS Core/edge with the CUCM in the BE6k.
Do we install the VCS core and edge in the same BE6k server? After that, the VCS edge assign with a DMZ ip address?Or install other VCS edge from the appliance?
How is configuration between CUCM and VCS? Since I can't any related document from the Cisco.com.
Best Regards,
Ben Lai

1 Either works, you just need to make sure to properly design and configure the underlying network and the ports to which each VM will connect
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http://www.cisco.com/c/en/us/support/unified-communications/telepresence-video-communication-server-vcs/tsd-products-support-series-home.html

Cisco Expressway

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The Expressway series doesn't have traversal licenses, instead it's refereed to as Rich Media Session licenses. If you have have an H323 and SIP endpoint, the interworked call will consume a single RMS license on each Expressway Core and Edge server, so a total of two licenses will be needed for the call. Below is taken from the Expressway data sheet and outlines what a RMS licenses is used for:
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However, as the Expressway series is meant to be used with CUCM, and it's a SIP only solution, where is this H323 endpoint residing or calling from?

Advice on best way to setup Disaster Recovery for SOA Suite 10.1.3.4

Hi Everyone,
I need some advice on the best way to setup Disaster Recovery for a SOA Suite 10.1.3.4 install deploying JSF/ADF OC4J applications.
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Any ideas would be really helpful.
Thanks,
Leigh.
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http://download.oracle.com/docs/cd/B25221_04/core.1013/b15977/disasrecov.htm#sthref303
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AMN

Not able to create disaster recovery VMM -- ovm pool / repository ownership issue

I have installed VMM and VMS and create a server pool with 3.0.2 version.
To test disaster recovery, I rebuild the VMM with the old UUID by
runInstaller.sh --uuid 0004fb00000100002ae.....
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Shun-Jee Liu

More information:
.ovspoolfs:
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OVS_POOLFS_NFSBASE_UUID=
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Shun-Jee Liu

Cisco Expressway Core & Edge Cluster, or Disaster Recovery Setup

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