March 2019
Beginner
756 pages
18h 45m
English
book
Mastering VMware vSphere 6.7 - Second Edition
by Martin Gavanda, Andrea Mauro, Paolo Valsecchi, Karel Novak
Content preview from Mastering VMware vSphere 6.7 - Second Edition
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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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