Tag Archives: Roshan Jha

vCenter Site Recovery Manager (SRM) 5.X – Part 2

Installation Repair

Altering authentication information to SRM database or vCenter server system will immediately prevent SRM to function correctly.

For example, you change the Administrator password for the vCenter server, SRM will no longer able to communicate with vCenter server. Whenever Authentication information changes after SRM installed, use Installation Repair wizard to update SRM with new credentials.

You can use Installation Repair Wizard to change the User and the Password for vCenter Server Administrator, the certification method for Authentication and the SRM database information.

One important thing to remember about using the Repair feature is that it over-write the existing installation of SRM. Therefore if you have applied patches to SRM and used Repair Wizard to change the User and the Password for vCenter Server Administrator, the certification method for Authentication and the SRM database information, You have to reapply all the patches.

Let’s start The Repair Process :-

1. Double click .EXE file to start Repair Wizard..

si12. Installer will detect that SRM is installed on the server so either we can Repair or Remove from this system. Choose Repair and click Next..

SRMPT2-23. If you were using Storage-Array Replication but now want to use vSphere         Replication Select Install vSphere Replication and click Next..

si84. Change the User or the Password information for vCenter Server and click Next..

SRMPT2-35. Change Certificate source if needed and click Next..

SRMPT2-46. Change Database Configuration Information if needed and Click Next..

SRMPT2-57. Follow the windows and click Finish to complete the Installation Repair.


Site Pairing Process

Once SRM is installed on both the sites, the next step is to pair the sites together. The pairing process establishes a connection between the vCenter Servers at the protected and recovery sites, which makes the SRM instances at both the sites aware of its counterpart at the other site (protected site/recovery site). Without the sites being paired, we can’t proceed further with the configuration of the DR setup.

This is how the sites are paired:

1) Connect to either vCenter Server using vSphere Client –> Home –> Solutions and Applications –> And Click Site Recovery. (Site Pairing can be done either from Protected Site or from Recovery Site vCenter Server).

SitePair-12) Click on Sites in the left pane.

3) Right-click on the local site listed, and click on Configure Connection to bring up the configure connection wizard.

SitePair-24)  In the Configure Connection wizard, supply the FQDN of the remote vCenter Server and click Next to continue. Accept any subsequent certificate warnings.

SitePair-35) Enter administrator credentials, and click Next. Accept any subsequent certificate warnings

SitePair-46) This will begin the pairing process, which will establish a connection with the remote vCenter Server and SRM, and also establish reciprocity. Click Finish to complete and exit the wizard.


7) Once you exit the wizard, you will be prompted again for the administrator credentials of the remote vCenter Server. Enter the credentials and click on OK. Ignore any subsequent certificate warnings.


8) You should see both the sites listed under the Sites pane now:

SitePair-9Note:- Pairing is done only from one of the sites. This is because the pairing process establishes reciprocity by configuring the connection in the reverse direction as well. However, when you open the site recovery solution at the remote vCenter Server, you will be prompted to enter the administrator credentials of the other site.


Installing Storage Replication Adapters (SRA) or vSphere Replication (VR) (Depends on your setup what are you going to use in your environment)

Once you have the SRM instances installed and paired, the next step is to install the Storage Replication Adapters. SRAs are coded and provided by the storage vendors. VMware certifies the SRAs and posts them as compatible with the SRM. Downloading SRA The certified versions of SRA can be downloaded directly from VMware’s website. Keep in mind that most vendors publish the updated versions of SRA at their website before it is certified by VMware. Since SRA is a vendor-supported component, you can choose to install the latest version available from the vendor.

This is how you can download an SRA:

1. Go to VMware’s website at www.vmware.com.

2.Navigate to the vCenter Site Recovery Manager option in Downloads under the Product Downloads category. (https://my.vmware.com/web/vmware/info/slug/infrastructure_operations_management/vmware_vcenter_site_recovery_manager/5_5)

3.Once you are at the download page for vCenter SRM, click on the Go to Downloads hyperlink listed against SRA.


4. At the Download Storage Replication Adapters for VMware vCenter Site Recovery Manager page, you will see a list of all the certified SRAs. Click on the Download Now button corresponding to the needed SRA.

SRA2 ==========================================================

Installing SRA

The SRA component has to be installed on both the SRM servers at both sites. In most cases, the SRA installation is pretty simple and straightforward, but this can be different from vendor to vendor. You need to refer to the vendor documentation for the installation procedure.

1) Once Download specific SRA from VMware Web site run .EXE file to start installation. (For Installation Demo – I am using Dell Compellent_StorageCenterSRA)

SRA32) Click on Next at the Welcome screen..


SRA54) Installation Setup will start the software installation..

SRA65) Click Finish to complete installation.

SRA76) You Need to install SRA on SRM server If you are not installing on SRM server it will give configuration error after finishing the installation.

SRA8Once the installation is complete, follow this procedure to discover the installed SRA component:

1. Connect to the protected/recovery site of vCenter Server using  vSphere Client.

2. Navigate Home –> Solutions and Applications –> And Site Recovery.

3. Click on Array Managers in the left pane and navigate to the SRAs tab. click on Rescan SRAs to discover the installed SRA.

SRA94. Repeat the procedure at the recovery site as well to discover the SRA.


Adding an Array Manager

Once SRA installed and discovered at both the sites, we need to add an array manager at both the sites. An array manager is required to discover the replicated LUNs and perform other storage operations initiated by SRM.

This is how you add an array manager:

1. Connect to the protected/recovery site of vCenter Server using  vSphere Client.

2. Navigate Home –> Solutions and Applications –> And Site Recovery.

3) Click on Array Managers in the left pane, select the site, and click on Add Array Manager to bring up the Add Array Manager wizard, as shown in the following screenshot:

SRA104) Follow the windows and supply a Display Name for the array manager and an SRA Type. The SRA type value field will be prepopulated with the SRA that is already installed. Click on Next to continue.

5) Follow the windows and provide vendor specific Storage Array details and Click Next.

6) Repeat the same procedure on the recovery site as well.

7) Once done, the Array Managers for both the sites should be listed, as shown in the below screenshot


Enabling an Array Pair

An array pair shows the replication relationship between two arrays. Once Array Manager has been added to both Protected and Recovery Sites we need to enable an array pair. For the array manager to detect an array pair, there should be a replication schedule already created between the arrays. Refer to the vendor documentation to understand what a replication schedule means for the vendor’s array and the procedure to create it.

This is how you enable an array pair:

1. Make sure that there is a replication schedule enabled between the two arrays.

2. Navigate to the vCenter Server’s inventory home page and click on Site Recovery.

3. Click on Array Managers in the left pane.

4. Select an added Array Manager (local or remote), and click on Refresh to discover an array pair.


5. If the Refresh action discovers an array pair, the array pair will be listed.  The Refresh action has to be done at both of the sites.

6.  Array pairs discovered are not enabled by default. To enable an array pair, select an array pair and click on Enable. This operation has to done at only one of the sites.

EAP27. When an array pair is enabled, it tries to discover the devices (LUNs) for which a replication schedule is enabled at the array. Keep in mind that not all devices with a replication schedule are displayed as a device for the array pair; only the ones that are presented to a host at the protected site are displayed. To view the detected and filtered replication-enabled devices with the array manager selected, navigate to the Devices tab and click on Refresh, as shown in the following screenshot:



Continue to vCenter Site Recovery Manager (SRM) 5.X – Part 3

Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 1

 Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 2

 Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 3

  Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 4

  Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 5

  Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 6

  Click here to go to vCenter Site Recovery Manager (SRM) 5.X – Part 7

Note :- I have used pictures in this post from SRM book written by Abhilash GB and would like to Thank you him for this 🙂

My VCAP5-DCD Experience

I got so many messages to share my experience with the VCAP5-DCD. So here is my VCAP5-DCD preparation and Exam experience.

VCAP5-DCD, no need to lie, is one of the hardest certification I had to pass; by the way I passed it in my second attempt ;-).

I took this exam on 21st August, 2014. For VCAP5-DCD you need to understand all the nuances of a typical customer scenario which you will be working as an enterprise architect with focus on virtualization of course.

The exam consists of 100 questions with Single choice, multiple choices, drag-drop and 6 Visio like scenario based design questions that need to complete in 275 minutes (including 30 minutes extra for non-English country…was lucky to get this 🙂 ). The exam covers all the topics mentioned in the blueprint. VMware has been doing a good job of making sure that all they give in the blueprint is covered in the exam and also the exam live up to the “Advanced “category which these exams are part.

Make sure that you understand every aspect of a project design such as Goals, Requirements, Constraint, Risks, Assumptions in very details and have a clear understanding of what these are and given a scenario how to recognize them. Read and understand HA/DRS and Resource Pool concepts in great detail, look at all the backup and DR strategies and concepts (e.g. RPO, RTO, WRT and MTD).

There is no practical question but I would encourage people preparing for the exam to do a lot of mock design on paper in networking and storage areas with various permutation and combination of network cards , HBA and storage tiers.

Handling the time in the exam is a critical factor makes sure that you target approximately 25-30 questions per hour which will give you sufficient time in the last hour so that you don’t have to rush and you can concentrate on the Visio type Design questions and also review your answers if necessary. (Good News Review is Available now)

About the books I used for the exam, here the list:-

VMware VCAP5-DCD Exam Blueprint: – https://mylearn.vmware.com/mgrReg/plan.cfm?plan=47317&ui=www_cert

VMware vSphere Design 2nd Edition: This is a must read not only for the exam preparation but for all the information’s needed for a good design implementation; all the components are reviewed (storage, network, compute, management …)

VCAP5-DCD Official Cert Guide: It’s the VMware Press official book on the VCAP-DCD exam. It’s a good book when you start from the beginning.

VMware vSphere 5 Clustering Technical Deepdive: This is great to read this book wrote by Duncan Epping and Frank Denneman, it’s just the reference on HA, DRS and Storage DRS mechanisms.

Don’t forget to look at the VMware Design tool simulator for the VCAP5-DCD exam, Watch at least 3-4 times and will save time in exam.

Here are few links:-




Good luck everyone for trying to pass the VCAP5-DCD exam and don’t hesitate to contact me if you have any questions about the exam 🙂