SAN or NAS storage systems… How do they affect my applications?
Here are some salient difference I gathered: SAN NAS Connection FC/ SCSI Ethernet Speed Typically faster (unless over Ethernet like FCoE or iSCSI) Typically slower Cost Typically higher Typically lower Intrusiveness Appears like locally attached storage to OS Remotely accessible filesystem using protocols like: NFS (Unix)/ CIFS (Windows)/ AFP (iOS) or even HTTP Can same unit be shared across different servers? No – every server mount will have its own exclusive blocks Yes. Concurrent access and locking is handled by the access protocols Unit of storage block-level file-level