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Other terms I have seen are SATA Controller, 15K Controller...
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Other terms I have seen are SATA Controller, 15K Controller...

<div>
15K Controller just mean an interface for a 15K Disk, right?<br />
<br />
Are SAN controllers and SAN Volume Controllers the same?<br />
<br />
Do these controllers have a bandwidth, that they can only transport so much storage data at one time?<br />
<br />
Thanks
</div>


15K Controller just mean an interface for a 15K Disk, right?

Are SAN controllers and SAN Volume Controllers the same?

Do these controllers have a bandwidth, that they can only transport so much storage data at one time?

Thanks

<div>
<div class="content wysiwyg-content">
There are different terminologies related to SAN/Disk I come across, in terms of 'Controller'...:<br />
<br />
RAID controller, SAN controller, SAN Volume Controller (anything else?)<br />
<br />
can you please give the distinction between these or which of these are the same? What are the purposes of a controller and how do they help data access for a server to the LUN.<br />
<br />
Thanks
</div>
</div>


There are different terminologies related to SAN/Disk I come across, in terms of 'Controller'...:

RAID controller, SAN controller, SAN Volume Controller (anything else?)

can you please give the distinction between these or which of these are the same? What are the purposes of a controller and how do they help data access for a server to the LUN.

Thanks

Controller - Big picture

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.