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Re: Oracle RAC with SRM 5.1

August 22, 2013, 5:23 am
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Michael,

 

Yes, all of the host on recovery site able to see all of the datastore.

i can try what you've suggest but i need to restore my VMs back to DC site.

Because My current conditions, i already run the recovery to the DR site but doesn't reprotect the VMs at the DR site yet. how can i reverse my VMs to DC site without sync the datastore from DR to DC site? because both RAC VMs working properly before. im affraid if i reprotect the VM at DR site and recovery back to DC, im not able to powering on both VMs at DC site..

 

Rgds

Dika

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Re: Oracle RAC with SRM 5.1

August 22, 2013, 5:45 am
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You cannot perform a test without reversing a replication.

 

What are exact versions of SRM and hosts (build numbers)?

 

Just to make sure: you don't have multi-writer flag configured in addtion to shared-bus, right?

 

 

Michael.

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Re: Oracle RAC with SRM 5.1

August 22, 2013, 6:34 am
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So sad, there is some possibilities if im reprotect the VMs at DR site and recovery/failback to DC site my VMs would not be able to power on?

 

im running SRM 5.1.0 and ESXi 5.1.0 build 1117900..

 

yes,pretty sure mal,.. the only scsi name exists at configuration parameters only scsix:x.ctkEnable with value "true". and there is some .ctk files in datastore.

 

is it possible if this ctk files whos prevent the VMs from powering up? because from the error stack state "could not open/create change tracking file".


But who is create this .ctk files? SRM does?

 

 

 

Rgds

Dika.

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Re: Oracle RAC with SRM 5.1

August 22, 2013, 6:59 am
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Good find!

ctk files are being created by ESX when CBT (Changed Block Tracking) is enabled. CBT is used by backup software and is not supported with disks using shared bus.

So this definitely may cause issues.Do you have any backup solution for these VMs?

 

CBT may be disabled (requires VM downtime):

http://kb.vmware.com/kb/1031873

 

Michael.

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Re: Oracle RAC with SRM 5.1

August 22, 2013, 7:06 am
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SRM and Customize IP

August 22, 2013, 8:30 am
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All,

 

We have strange issue with SRM 5.1.1. When test recovery plan is executed.

All steps works fine but Customize IP hangs at 0 % and after 10 min it times out with error "Timed out waiting for Customization scripts to complete in 600 seconds".

 

When we checked logs on guest VM (server 2012) Customization scripts ran successfully and IP was applied on Guest OS.

But NIC card is not connected.

Cleaned up recovery plan.

 

So we ran test plan again but this time when recovery plan was bringing up VM, we checked to box for NIC card in VM setting 1)Connected and other 2)Connect at power on.

 

Test recovery worked like charm.

 

No sure why test recovery plan does not connect NIC card to VM when running test recovery plan ?


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Re: SRM and Customize IP

August 22, 2013, 9:02 am
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Hi,

What version of ESXi do you run?

 

Michael.

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Re: SRM and Customize IP

August 22, 2013, 9:05 am
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Re: SRM and Customize IP

August 22, 2013, 9:09 am
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Do you have enough free ports on VDS portgroup / vSwitch?

Check the events tab of the VM, Can you see anything suspicious?

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Re: Concerning data center failover with SRM

August 23, 2013, 12:52 am
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Thanks alot for the quick answer Micheal, though im still wondering how to isolate the network of virtual machines on the protected site.

One option might be to have a virtual router where the protected VMs are connected to and have it check ISP connections and dark fiber connection

between data centers with a cronjob if its available and when not disable the interface connecting to the network, but this is also not a perfect

solution.

 

Kind regards,

 

Jayson

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Re: Oracle RAC with SRM 5.1

August 23, 2013, 2:09 am
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Hi Michael,

 

Yess right, the .ctk files prevent my secondary VMs from power-on...

after changing the value from scsix:x.ctkEnabled to "false", the secondary RAC VM now able to power on..

 

actually im still rather confuse who is creat the .ctk files because i didnt implement any backup sollutions..

in my opinion the EMC SRA create the .ctk file, because they handle sync storage between DC to DRC and to keep data consistency the SRA using CBT. CMIIW...

 

one more questions mic,

if im enable the multi-writer flag, can still use SRM to protecting my VMs?

because in my understanding, refer to this document http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1034165,

VMs with multi-writer flag enabled cannot using SRM.

 

 

Rgds

dika

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Re: Oracle RAC with SRM 5.1

August 23, 2013, 3:18 am
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Good news. I am glad both VMs are up and running.

I am not RecoverPoint expert, so cannot say if RecoverPoint has enabled CBT.

Have you deployed these VMs from template? Maybe it is enabled on the template VM.

 

My colleagues confirm that SRM does work with multi-writer flag (using array based replication).

Regarding the statement in the KB, it only relates to vSphere Replication that cannot be used with shared VMDKs.

I will try to get the KB fixed.

 

Michael.

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Re: SRM 5.1 Syslog??

August 23, 2013, 3:31 am
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Re: SRM with multiple tenant

June 7, 2012, 10:57 pm
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SRM Query

August 26, 2013, 6:05 am
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I would like to know if it is possible to move a VM Template from one data center to another using SRM (VSphere 5.1)

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Re: SRM and Customize IP

August 26, 2013, 6:44 am
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Vswitch has more than 100 ports available. Not errors found on events tab of the VM.

If I remove Customize IP settings then VM with boot up with NIC card connected.

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Re: SRM test windows OS bootup question...

August 17, 2011, 11:07 pm
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same problem. how can this be fixed anyway if VM cannot be replicated?http://posting.info.tm/wink.gif

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Re: Issue post failover using SRM

August 26, 2013, 7:23 am
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Hey mal_michael,

 

Thanks for getting back to me.

 

  • It is SRM 4.1 running on VCenter 4.1.
  • The VM is a Sun Solaris 10 box.
  • It happens to all unix servers being failed over tot he DR site (all the same OS)

 

We have put a work around in place where we run a post failover script against each unix VM, this runs a pre-created script (hosts.sh) on the VM which backs up the hosts files and replaces it with a hosts file with the correct IP information.

 

Cheers,

James

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Re: SRM install with one VC in linked mode

August 17, 2011, 11:40 pm
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i see. so 2 SRM can't be installed in only one vCenter. it has to be one vCenter for each SRM. thanks for the image, it gave me a lot of information.http://posting.info.tm/wink.gif

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Database Requirements for Bidirectional Replication

August 26, 2013, 9:49 am
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Hi all,

 

I have two sites - Site A and Site B - for which we want to have bidirectional replication of VMs.

 

I have two vCenter infrastructures deployed - one in site A that only manages VMware infrastructure in that site, and one in site B that only manages the infrastructure in that particular site.

 

The questions I have is with respect to the required databases. 

 

- Should the database for the protected site be at the recovery site or should it be located at the protected site?

- If I'm going to be doing bi-directional replication, should I be using two databases - one at either site?

 

Thanks in advance.

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