As the name suggests, a group of disks housed in its own box; JBOD differs from RAID in not having any storage controller intelligence or data redundancy capabilities.

The amount of time between a packet of data being sent to it being received between two devices on a network.

This is somewhere between compute and networking really (and in truth they live in the EC2 section of the AWS console), but I stretched the limits of what I could call a “compute service” already, so they’re going here instead.

Referring to the ability to redistribute load (read/write requests) to an alternate path between server and storage device, load balancing helps to maintain high-performance networking. 

A logical unit is a conceptual division (a subunit) of a storage disk or a set of disks. Logical units can directly correspond to a volume drive (for example, C: can be a logical unit). Each logical unit has an address, known as the logical unit number (LUN), which allows it to be uniquely identified. 

A method to restrict server access to storage not specifically allocated to that server. LUN masking is similar to zoning but is implemented in the storage array, not the switch.

The generic term usually used in conjunction with the amount, of long or short term storage in a computer. Examples being 60GB hard drive or 512MB of RAM (short term).

Servers that provide the same services and data to users, providing a higher level of redundancy. So if one server is unavailable to the users the other takes over and provides the services/data.

Multipathing is the use of redundant storage network components responsible for transfer of data between the server and storage. These components include cabling, adapters and switches and the software that enables this.

A storage device connected directly to a network, so all devices on the network have the ability to independently access, read and write data to it.