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The Complete VMware vSphere Guide
book

The Complete VMware vSphere Guide

by Mike Brown, Hersey Cartwright, Martin Gavanda, Andrea Mauro, Karel Novak, Paolo Valsecchi
November 2019
Beginner content levelBeginner
768 pages
32h 29m
English
Packt Publishing
Content preview from The Complete VMware vSphere Guide

Clustering features available in VMware vSphere

Many features can be used for guest OS or application clustering within VMware vSphere. There are always pros and cons for each type depending on your use case:

  • SCSI bus sharing for virtual disks on VMFS volume: You can enable simultaneous access to the single disk for multiple VMs
  • SCSI bus sharing for RDM devices: In this case, there is no virtual disk located on the VMFS datastore, but the device is mapped using Raw Device Mapping (RDM) as a disk to the VMs
  • Multi-writer flag on the virtual disk: No bus sharing is involved, but the disk is unlocked for simultaneous operations from the VMs
  • In-guest iSCSI: There is no shared disk on the vSphere level, the disk is mapped from the guest OS.
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Publisher Resources

ISBN: 9781838985752Supplemental Content