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SnapScale/RAINcloudOS 4.1 Administrator’s Guide
GL - Master Glossary & Acronym List
Hot Swapping
The ability to remove and add disk drives to a system without the need to power down or
interrupt client access to filesystems. Not all components are hot-swappable. Please read
installation and maintenance instructions carefully.
HTTP
Short for
Hypertext Transfer Protocol
.
An application protocol for transferring files (text,
graphic images, sound, video, and other multimedia files) over TCP/IP on the World Wide
Web.
HTTPS
Short for
Hypertext Transfer Protocol Secure
.
The HTTP protocol using a Secure Sockets Layer
(SSL). SSL provides data encryption, server authentication, message integrity, and client
authentication for any TCP/IP connection.
Inheritance
In Windows permissions, inheritance is the concept that when permissions for a folder are
defined, any subfolders within the defined folder inherit its permissions. This means an
administrator need not assign permissions for subfolders as long as identical permissions are
desired. Inheritance greatly reduces administrative overhead and also results in greater
consistency in access permission management.
Initiator Device
An iSCSI system component that originates an I/O command over an I/O bus or network. An
initiator issues the commands; a
target
receives them.
An initiator normally runs on a host computer. It may be either a software driver or a
hardware plug-in card, often called a Host Bus Adapter (HBA). A software initiator uses one of
the computer’s Ethernet ports for its physical connection, whereas the HBA will have its own
dedicated port.
Software initiators are readily available for most host operating systems. Hardware initiators
are not widely used, although they may be useful in very high performance applications or if
10 Gigabit Ethernet support is required.
I/O (Input/Output)
The operation of transferring data to or from a device, typically through an interface protocol
like CIFS, NFS, or HTTP.
IP
Short for
Internet Protocol
. The unique 32-bit value that identifies the location of the server.
This address consists of a network address, optional subnetwork address, and host address. It
displays as four addresses ranging from 1 to 255
separated by periods.
IQN
Short for
iSCSI Qualified Name
. A name format used in the iSCSI protocol. Initiators and
targets have IP addresses, just like any other network entity. They are also identified using an
iSCSI name, called the iSCSI Qualified Name (IQN). The IQN should be unique worldwide. It
is made up of a number of components, specifying the date, identifying the vendor in reverse
format, and then uniquely identifying the initiator or target. An example of an IQN is:
iqn.2001-04.com.example:storage:diskarray-sn-123456789
