storage area network
Block Storage – Connected for Groups of Servers specifically used for installing Operating Systems and Applications with low latency and it resembles as it is connected to the server locally.
File-Storage and specifically used to address the growing needs to store unstructured data such as files, audio/video for all the employees and end-users in the Local Area Network (LAN) of the organisation.
Unified Storage is a converged Storage Technology with both SAN + NAS capabilities. It uses Multi-Protocol effectively to provide both file-storage and block-storage easing the centralised management.
Network-Attached Storage (NAS)
Network-attached storage (NAS) is dedicated file storage that facilitates multiple users even in a heterogeneous client device to retrieve data from centralised disk capacity. Users on a local area network (LAN) obtain the shared storage via a standard Ethernet connection.
Storage Area Network (SAN)
A storage area network (SAN) is a dedicated low-latency with an ultra-speedy cluster of harddisks that interconnects and offers distributed pools of storage devices to multiple servers.
Unified Storage or Multi-Protocol Storage
Unified storage is a fusion of both SAN and NSA with storage space connected to a network that provides file-based and block-based data storehouse services to other devices on the network.
Storage virtualisation is the pooling of physical storage from various storage designs that resembles to be a single storage device — or pool of usable storage with a centralised management capability. The storage technology relies on software to recognise convenient storage capacity from physical media and to then aggregate that function as a pool of storage that can be used in a virtual environment by virtual machines (VMs).
unified storage architecture
A unified storage architecture uses file protocols such as Server Message Block (SMB) and Network File System (NFS). And block-based protocols such as Fibre Channel (FC) and Internet Small Computer System Interface (iSCSI) so users can access streamlined applications and storage.
There are many vendors for storage. However, the two most dominant players in the enterprise
- EMC (now a part of Dell).
NAS typically uses multiple protocols to perform filing and storage designs. These comprise TCP/IP for data transfer; SMB (CIFS) and NFS for remote file service; and NFS, SMB and FTP for data sharing.
SAN gives full block-level access to a server’s disk volumes.