Hi Sergio,
Good point. I vaguely remember I worked on some kind of similar topic for another book, and finally I found it - hope this information can be helpful:
Please check: Performance and Best Practices Guide for IBM Storage FlashSystem and IBM SAN Volume Controller Updated for IBM Storage Virtualize Version 8.6
https://www.redbooks.ibm.com/redpieces/pdfs/sg248543.pdf
Chapter 2.3.5 - search for figures 2-26, 2-27 Port masking configuration on SVC or IBM FlashSystem
Hope this will be helpful
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Denis Olshanskiy
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Original Message:
Sent: Tue March 19, 2024 07:48 AM
From: Sergio Pardos
Subject: SVC: Confused with FC Port recommendations
Hi everyone
According to this document: Implementation Guide for IBM Spectrum Virtualize Version 8.5
this would be the recommended distribution for 12-port nodes:
![](https://dw1.s81c.com//IMWUC/MessageImages/1ced9c4b85154490b78d7525a25498e3.png)
I cannot wrap my mind around the fact they are advising to place the two only inter-node ports in the same FC card. From where I see it, if the card #1 fails, the intracluster is gone for that node. Wouldn't it be advisable to place both inter-cluster ports in different cards to avoid SPOFs?
Thanks in advance.
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Sergio Pardos
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