Possible SAN Connectivity Issues

The following diagram is listed the commmon possible SAN connectivity issues, it is very useful for troubleshooting.


  • Switch firmware or hardware issues that cause a path to become unavailable.
  • Cables that have been mistakenly unplugged, and dirty or poorly seated (or broken) connectors.
  • SAN zoning issues, where host and storage devices are not zoned to communicate with one another, or devices that were zoned become un-zoned for one reason or another; or after some zoning changes, the previous Zoneset was set active again (usually operator error).
  • Fabric rebuild issues, where a bad link between two switches keeps bouncing between online and offline states, causing a constant stream of fabric reconfigurations so that data traffic is severely limited.

About Victor Wu

My name is Victor. I hope to be your friend.
This entry was posted in EMC. Bookmark the permalink.

One Response to Possible SAN Connectivity Issues

  1. Bharat Kumar says:

    Can add these points too.

    Mulitiple drive failures in a raid.

    Multiple flare drive failures.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s