File Systems Layer contains directories (also known as folders) and files that are accessed, managed, and updated through the use of databases, middle tier applications, and end-user tools. They can be broadly categorized into local file systems that are disk based and remote file systems like NFS. In Enterprise Manager, summary attributes are provided for local file systems and the Writeable NFS part of File Systems layer.
Local File Systems are based on disk storage visible to the host. Various operating systems support different types of local file systems. The following table provides examples:
| Local File System | Operating System |
|---|---|
| ufs | Solaris |
| vxfs | Solaris, Linux, and others |
| ext2 | Linux |
| ext3 | Linux |
See About Storage Computation Formulas for how summary attributes for Local File Systems are calculated for associated hosts.
Network File Systems (NFS) are accessible over the network from the host. A remote server (NFS Server) performs the I/O to the actual disks. There are appliances that provide dedicated NFS Server functionality, such as Network Appliance Filer. There are also host systems, for example, Solaris and Linux, that can act as both NFS Server and Client.
Writeable NFS refers to the NFS mounted on a host with write privilege.
See About Storage Computation Formulas for how summary attributes for Writeable NFS are calculated for associated host(s).
About Storage Computation Formulas
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