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Question

 Manoj Kumar Selvaseenan (MANOJKUMAR)
Great Eastern Singapore
Lead System Architect
Great Eastern Singapore
SG
MANOJKUMAR Member since 2011 1 post
Great Eastern Singapore
Posted: Feb 5, 2019
Last activity: Feb 11, 2019
Posted: 5 Feb 2019 7:10 EST
Last activity: 11 Feb 2019 7:23 EST
Closed

fault tolerant shared storage

Shared Storage Application servers require fault-tolerant shared storage in order to facilitate initiated and uninitiated shutdowns. Organizations must choose a shared storage solution and will need to implement the shared storage API to integrate with PEGA 7. PEGA 7 supports shared storage using NFS or shared disk out of the box, but these solutions are not inherently fault tolerant.

Can some one suggest what we need to use for fault tolerant shared storage?

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DevOps

Posted: 5 years ago
Posted: 10 Feb 2019 12:55 EST
Chandrasekhar Gollamudi VN (chandrasekhar_g)
PEGA
Senior Manager, Technical Support - Runtime Engine and Search
Pegasystems Inc.
IN

Hi,

  • For NFS solutions, the shared storage must point to an NFS location to support access from all nodes.
  • For disk-oriented solutions, Pega Platform servers require read/write access to shared storage .

If custom shared storage implementations are required, the following plug-in for shared storage must be used: com.pega.pegarules.pub.session.CustomPassivationMechanism

Please refer below link for more information : https://community.pega.com/sites/default/files/help_v731/engine/high-availability/architecture/eng-high-availability-shared-storage-con.htm

One more below psc link is found. Please check It also may help you

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Hi,

  • For NFS solutions, the shared storage must point to an NFS location to support access from all nodes.
  • For disk-oriented solutions, Pega Platform servers require read/write access to shared storage .

If custom shared storage implementations are required, the following plug-in for shared storage must be used: com.pega.pegarules.pub.session.CustomPassivationMechanism

Please refer below link for more information : https://community.pega.com/sites/default/files/help_v731/engine/high-availability/architecture/eng-high-availability-shared-storage-con.htm

One more below psc link is found. Please check It also may help you

https://collaborate.pega.com/discussion/high-availability-deployment-and-shared-storage

 


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Posted: 5 years ago
Posted: 11 Feb 2019 7:23 EST
Manoj Kumar Selvaseenan (MANOJKUMAR)
Great Eastern Singapore
Lead System Architect
Great Eastern Singapore
SG

Hi Chandrasekar,

Thanks for your reply. If you see my description, i have taken from the pdn articles which states that NFS and disk oriented solutions are not inherently fault tolerant. So it means that we have to go for custom solution. please comment your thoughts

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