Analyze Multipathing Issues Between a Host and an E-Series System CERTIFIED-IMPLEMENTATION-ENGINEER-SAN-E-SERIES Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   After verifying physical connectivity, what is the next logical step in troubleshooting a multipathing issue?

   • AReboot the storage system
   • BCheck the host's multipath configuration and path status
   • CUpdate the storage system's firmware
   • DReplace all cables
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A Linux host is connected to an E-Series storage system via two Fibre Channel HBAs, each with two ports. The host's multipath configuration shows one path in 'active' state and three paths in 'standby' state. The administrator notices that I/O performance is lower than expected during normal operations. What is the most likely cause of the performance issue?

   • AThe multipath configuration is using active/passive mode, so only one path is actively processing I/O at a time.
   • BThe HBA ports are not zoned correctly, causing the standby paths to be unusable.
   • CThe multipath software is not installed, so the host is using only one physical path.
   • DThe E-Series LUN is mapped only to one controller, so the other controller's paths are not available.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   How are E-Series controllers configured to support multiple paths from a host?

   • AOnly one controller should be active at a time
   • BEach controller must have a unique WWN and be mapped to the same LUNs
   • CControllers must be connected to the same host HBA port
   • DControllers must be configured in a cluster with a shared virtual IP
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5. 14application · medium

   A host has two Fibre Channel paths to an E-Series storage system. One path is in 'failed' state, and the other is 'active'. The administrator has already replaced the cable on the failed path, but the path remains failed. What should the administrator check next?

   • AVerify that the HBA port is enabled and recognized by the host.
   • BChange the LUN mapping to use only the active path.
   • CReplace the HBA immediately.
   • DReboot the host to reinitialize the HBA.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A database administrator reports that a critical application is experiencing intermittent I/O errors and the performance has degraded significantly. The system uses an E-Series storage system with multipathing. The administrator checks the host's multipath status and sees that all paths are 'active' but the I/O errors continue. What should the administrator check next?

   • AReboot the host to clear the I/O errors.
   • BDisable multipathing and use a single path.
   • CReplace all Fibre Channel cables.
   • DCheck the E-Series controller logs for path down events or controller failovers.
   Reveal Solution Discussion Select an answer first