The following table compares networked storage technologies that vSphere supports.
| Technology | Protocols | Transfers | Interface |
|---|---|---|---|
| Fibre Channel | FC/SCSI | Block access of data/LUN | FC HBA |
| Fibre Channel over Ethernet | FCoE/SCSI | Block access of data/LUN |
|
| iSCSI | IP/SCSI | Block access of data/LUN |
|
| NAS | IP/NFS | File (no direct LUN access) | Network adapter |
The following table compares the vSphere features that different types of storage support.
| Storage Type | Boot VM | vMotion | Datastore | RDM | VM Cluster | VMware HA and DRS | Storage APIs – Data Protection |
|---|---|---|---|---|---|---|---|
| Local Storage | Yes | No | VMFS | No | Yes | No | Yes |
| Fibre Channel | Yes | Yes | VMFS | Yes | Yes | Yes | Yes |
| iSCSI | Yes | Yes | VMFS | Yes | Yes | Yes | Yes |
| NAS over NFS | Yes | Yes | NFS 3 and NFS 4.1 | No | No | Yes | Yes |
Local storage supports a cluster of virtual machines on a single host (also known as a cluster in a box). A shared virtual disk is required.
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