Ryan Birk – Virtual Insanity

Thought I would pass along a great slide deck about troubleshooting vSphere storage.

• vCenter Performace Charts & esxtop
• Disk Alignment
• Hard Disks/Storage Arrays
• SCSI Reservations
• APD (All Paths Down) Issues
• Multipathing considerations
• Communication

With vSphere 5, the VMware HA infrastructure has been completely changed.

In vSphere 5.0 the new HA agent is “FDM” (Fault Domain Manager) and replaces the old AAM agent (from EMC Legato).

Other notable changes:
The old Primary / Secondary node concept has been replaced by a new and more simple Master/Slave node concept
A new Datastore Heartbeat function as been added (HA Architecture Series – Datastore Heartbeating)
No dependency on DNS
Syslog functionality

See this slideshare for more information: