SCSI standalone enclosure services is a computer protocol used mainly with disk storage enclosures. It allows a host computer to communicate with the enclosure to access its power, cooling, and other non-data characteristics.
The host computer communicates with one or more
SCSI Enclosure Services (SES) controllers in the enclosure via a SCSI interface which may be
Parallel SCSI
Parallel SCSI (formally, SCSI Parallel Interface, or SPI) is the earliest of the interface implementations in the SCSI family. SPI is a parallel bus; there is one set of electrical connections stretching from one end of the SCSI bus to the oth ...
,
FC-AL
The arbitrated loop, also known as FC-AL, is a Fibre Channel topology in which devices are connected in a one-way loop fashion in a ring topology. Historically it was a lower-cost alternative to a fabric topology. It allowed connection of ma ...
,
SAS, or
SSA. Each SES controller has a SCSI identity (address) and so can accept direct
SCSI command
In SCSI computer storage, computers and storage devices use a client-server model of communication. The computer is a client which requests the storage device to perform a service, e.g., to read or write data. The SCSI command architecture was ...
s.
Implemented commands
The following SCSI commands are implemented by standalone enclosure services devices:
Note 1: The
initiator
An initiator can refer to:
* A person who instigates something.
* Modulated neutron initiator, a neutron source used in some nuclear weapons
** Initiator, an Explosive booster
** Initiator, the first Nuclear chain reaction
* Pyrotechnic initiator, ...
needs to send a SCSI inquiry to interrogate the SCCS bit which says whether the SES controller has this command.
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SCSI