MsExchange Blog Spot Telnet25

March 31, 2010

Exchange Server 2010 training webcasts and How Do I videos

Filed under: General — telnet25 @ 6:55 pm

I wanted to share some of the links to  videos out there which are very useful. if you have not seen them here are the links.

The Three UC Amigos

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Exchange team Videos

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Best regards,

Oz Casey , Dedeal

MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

Http://smtp25.blogspot.com (Blog

Http://telnet25.spaces.live.com (Blog)

Http://telnet25.wordpress.com (Blog

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March 30, 2010

Top 10 Exchange Storage Myths

Filed under: General — telnet25 @ 1:16 pm

Here is another great article by MSExchange team touching base some of the mostly asked questions in Exchange 2010.

Simplifying and reducing the complexity of messaging environment while making it full redundant and faster is the most impressive part of Exchange 2010. You don’t need to deploy Exchange in complicated SAN.

Use DAS ( direct attached storage ) and simplify the operations of Exchange by taking dedicated SAN personal out the picture and have your Exchange administrators to have full responsibility and control.

As you can read more from bottom link most of these improvement are targeted to lower the cost, simplify the application deployment and operations while providing the best messaging experience.

Some of the highlights from this article

  • Exchange 2010 supports up to 100,000 items per folder,Remember Exchange 2007 supported up to 20.000 items per folder.
  • SIS is gone.Exchange 2010 does provide 20% database compression for HTML/Plain Text Messages
  • Simply the deployment, no more dedicated SAN person into Exchange deployment scenarios, simply use DAS to deploy exchange.
  • What is “backup less” Exchange ? With the ability to have multiple copies of each database, along with features such as single item recovery and lagged copy support, you might not need to use traditional backups

Read more

http://msexchangeteam.com/archive/2010/03/29/454443.aspx

Exchange 2010 Large Mailbox Vision Whitepaper

http://www.microsoft.com/downloads/details.aspx?FamilyID=e3303d34-af6c-4108-861b-dc05f9cf3e76&displaylang=en

Best regards,

Oz Casey , Dedeal

MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

Http://smtp25.blogspot.com (Blog

Http://telnet25.spaces.live.com (Blog)

Http://telnet25.wordpress.com (Blog

March 3, 2010

DAG and Active Manager & Failover Part#1

Filed under: General — telnet25 @ 11:53 pm

Those of you who dealt with cluster exchange servers in the past or present will remember and know the word failover. The fail over most of the time in Exchange word alarms the Exchange administrator unless administrator is failing over for maintenance in the scheduled window.

Remember Clustering you have Exchange Server A , you have Exchange server B , and use Microsoft clustering technologies to create Virtual Server which points back to “Active node”. So the idea here is clients who are using mail services connecting to Virtual server ( Virtual Server is mapping to Active Server) all databases and logs are being kept on the SAN backend, so if Active server goes down or gives up from shared resources the passive server jumps in and tales over the shared cluster resources.

If you pull up one of the user properties in Clustered Exchange environment, you will easily see the Exchange server is pointing to CMS server name which maps to Active server. IF Active server fails down the CMS is being taken over by passive node which becomes active and since clients are able to locate the CMS server, by using second server they access Exchange databases logs etc.

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Here is the user who’s mailbox is configured on DAG

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If you take look at this picture you will quickly see , “DB1” has two copies on two different server and if MAIL3 ( server) goes down the AD ( Active manager) will activate the same database on the Different server and users will still get connected.

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The goal is to provide continuity to Exchange clients and keep them happy. Understanding how cluster works can easily be complicated to be honest, if you have never worked and not set it up by nature you may thing it sounds complicated and I hear you.

So what has been Changed in Exchange 2010?, beside Exchange 2010 is the fastest, greatest messaging application it is offering perfection and simplify in my opinion and you will understand more and appreciate this when you move into E210 (-:, trust me this isn’t advertisement it is a “FACT”.

What is DAG?

  • DAG is boundary of mailbox database replication.
  • DAG (Database availability Group) the name itself is servings it purpose, the new component & future build into Exchange2010 which provides high availability and site resilience. This mean to us if you have two exchange server configured as DAG member, if one server goes down, your helpdesk wont bombarded with user calls and your manager wont bug you (-: ….. ( we wish)
  • Any server in a DAG can host a copy of a mailbox database from any other server in the DAG

Active Manager

  • AM is new E210 component, Active Manager is an Exchange 2010 component which manages switchovers and failovers that runs on every server in a DAG.

*** setting up DAG is fairly easy to be honest, you will love the little steps and intelligent automation behind DAG once you start implementing it***

Read more

Understanding Active Manager

http://technet.microsoft.com/en-us/library/dd776123.aspx

Understanding Database Availability Groups

http://technet.microsoft.com/en-us/library/dd979799.aspx

Best regards,

Oz Casey , Dedeal

MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

Http://smtp25.blogspot.com (Blog

Http://telnet25.spaces.live.com (Blog)

Http://telnet25.wordpress.com (Blog

ISA/TMG Load Balance CAS Servers????

Filed under: General — telnet25 @ 4:11 pm

One of the most frequent asked question on the Exchange forums is to load balance CAS servers. I think the excitements of Exchange being redundant ( DAG) as nature bringing all these good questions and scenarios on the table.

I have learned recently great information in this regard and wanted to pass it on to you guys to clear some of the confusion may exist.

Question:

Can TMG/ISA be used to load balance the CAS servers ?

Answer: 

ISA or TMG cannot load balance RPC traffic it can only load balance Internet protocol traffic )-:  ( HTTPS,OA)

  • It is possible to use WNLB ( windows network load balancing) with HT/CAS server , However there are caveats doing this such as ,
  • Scalability more than 8 nodes in WNLB with E2010 CAS is not recommended.
  • Network Flooding, WNLB may cause network flooding
  • Lack of Service Awareness , the WNLB only is aware of IP is being up/down

So as summary

 

WNLB with HT/CAS Possible but not recommended Network flooding & lack of service awareness
Scalability
WNLB MBX+CAS Not Possible!!! limitation build into Windows (hard-blocked)
ISA /TMG Cannot load balance RPC traffic Only internet protocol traffic,such as  HTTPS,OA
  • RPC Traffic load balance is possible with Hardware load balancer , which obviously will introduce extra $$$$.

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As I learn more in this matter I will come back and update this information.

Best regards,

Oz Casey , Dedeal

MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

Http://smtp25.blogspot.com (Blog

Http://telnet25.spaces.live.com (Blog)

Http://telnet25.wordpress.com (Blog

March 1, 2010

BlackBerry Enterprise Server Express # FREE

Filed under: General — telnet25 @ 9:44 pm

Incase if you have not seen the link here is **Free** version of BES. I knew this was coming up, the link and information is provided to me by Simon Butler ( Exchange MVP) so thanks to Simon for keeping us informed.

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Read more click here

Best regards,

Oz Casey , Dedeal

MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

Http://smtp25.blogspot.com (Blog

Http://telnet25.spaces.live.com (Blog)

Http://telnet25.wordpress.com (Blog

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