imported>Likeanechointheforest at 21:32, 15 November 2021

2021-11-15T21:32:46Z

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{{short description|Computer data storage technology}}{{Unreferenced|date=November 2021}}

'''Metadata controller''' (or MDC) is a [[storage area network]] (SAN) technology for managing [[file locking]], space allocation and data access authorization.
This is needed when several clients are given block level access to the same disk volume, [[Computer data storage|data storage]] sharing.

MDCs are only used on high-end servers. These are never found on user computers. In the absence of MDC over a SAN there is no possible way of ensuring privacy of the stored data. This controller can also play its role as a sharing device in case the administrators allow other servers to access certain blocks in a particular SAN. The access granted to the servers is of different levels. Some times it may happen that the server is not able to see a block or make changes in it in case of a locked file. This is caused by grant of low level access. If different clients on SAN happen to know each other, access may be granted to shift a certain block from one server to another. This allows the recipient server to use the block and make changes in it.

MDCs work as [[Enzymes (computing)|enzymes]]. They require certain types of SANs and networks to work properly. If a controller is connected to the right network it will boost its output. In case of wrong connection i.e. with the incorrect network, it will decrease its performance.
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[[Category:Data management]]
[[Category:Telecommunications engineering]]
[[Category:Storage area networks]]
[[Category:Local area networks]]

{{compu-storage-stub}}

Metadata controller - Revision history

imported>Likeanechointheforest at 21:32, 15 November 2021