3PAR persistent ports

[haku1]

Hello,

I have checked the following guide.
Zoning with 3PAR persistent ports
https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=sd00001803en_us&page=GUID-D7147C7F-2016-0901-03BB-000000001885.html

We found that this feature allows service to continue even if a node fails.
If a network path fails, will the service continue?

I would like to check whether the service will continue in the event of an FC cable or FC switch SFP failure, or FC switch failure.

Best Regards,

[support_s]

System recommended content:

1.  HPE 3PAR Windows Server 2003 Implementation Guide

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[Satish04 · Accepted solution]

Hi haku1,

1. The persistent ports on the remaining controller node can be used to maintain access to the storage volumes in a 3PAR system with persistent ports. In this way, even if one controller fails, the other will continue to serve data.
2. Redundancy and failover mechanisms provided by FC (such as multipathing) will kick in if there is a failure at the network level, such as a cable or FC switch SFP failure. As a result of these mechanisms, traffic is rerouted through an alternate path if one path becomes unavailable. Multipathing software and FC configuration in your environment will determine the exact behavior.
3. An entire FC switch failing can disrupt connectivity for all devices connected to it. To mitigate this risk, It is common to have redundant FC switches and configure multipathing software to use multiple paths. By doing this, traffic can automatically failover to the other switch if one fails.

Hope this helps.

Regards,
Satish