I’ve heard the reason behind why great people are called great is that they identify ‘what’ positions are designed for them in the world of IT. Are there any openings for the designation in Storage technologies? There are zillions of them waiting for students like us!(Development is just a part of computer science). The design is witch! The implementation? Too vast!
Appreciating the capabilities of SAN, Making a decent research on the responsibilities of people behind the implementation of these huge heavy storage boxes could turn out to be unimaginably interesting. Their day to day work, the issues faced, the R and D on these boxes is way too extensive. Their job is not to fulfill their pre-existing job description. It is beyond that. It is interesting. SAN is interesting. Buckle up, and consider shaping your careers in SAN.
DAS, SAN and NAS(Quick Read)
DAS : Stands for Disk Attached Storage. The ‘Disk’ here can be a hard disk drive inside the computer or can be attatched externally. Conventionally, It is attached to the processor by a cable. I/O requests access devices directly.
NAS: Stands for Network Attatched Storage. Here, the storage is attatched to the Network(unlike a single computer as in case of DAS). A NAS device is an appliance which is a composition of an integrated processor and the disk storage, which helps its attatchment to a TCP/IP-based network. A NAS box is a file storage. File requests recieved by NAS are translated to device requests.
SAN: Stands for Storage Area Network. Storage resides on a dedicated network(network of storage devices). Just as a LAN is a network of computers or hosts, A SAN is a network of storage devices! Amazing, isn’t it. SAN’s extensive support for disk mirroring, backup and restore, archieval and retrieval, migration of data from one storage box to the other helps it deliver unparallaled security which is the bottleneck for all corporate data centers.
What is RAID?
RAID stands for Redundant array of Inexpensive disks. RAID is the technology that backs the idea of combination of several storage devices into 1 single logical unit. RAID levels provide protection of the data stored, and emphasize the term “Intelligent storage” in case of SANs
What is SAN?
To start with, SAN can be defined as a network of storage devices. Rather, SAN is used to make storage devices. SAN has its own network of storage devices that are generally not accessible through the other devices on the lan.
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