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Myles Gray
Asked: 2014-06-05 07:15:21 +0800 CST

ESXi boot time with 9 iSCSI targets

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Our ESXi hosts have always been slow booting when it came to iscsi_vmk loaded successfully - sitting here for almost 5 minutes.

In all a full server reboot takes almost 12 minutes.

We have 9 iSCSI targets per host (5 SANs with redundant interfaces) configured as dynamic discovery targets.

Has anyone experienced this? Can it be remedied with static discovery mode? Are there any debug steps we can work through to help diagnose this?

(All our targets are accessible at boot so i'm assuming the host isn't stuck retrying to connect to a target)

vmware-esxi

2 Answers

  1. Best Answer

    Coming back to this, reconfigured hosts with Static Targets instead of Dynamic Targets took the time stuck on "iscsi_vmk loaded successfully" from 10 minutes to 15 seconds.

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  2. Confirm your iscsi networking is configured correctly, eg) multiple subnets as recommended by the storage vendor, properly configured "zoning" allowing the ESXi iscsi interfaces access to the correct array interfaces.

    Also check the vmware host logs, they'll squawk if they're having connection problems.

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