Overland Storage SnapSAN S1000 User Manual page 122

SnapSAN S1000 User Guide
MAC Address
Short for Media Access Control address, a hardware address that uniquely identifies each
node of a network.
Mapped LUN Number
Each logical drive is presented to the host system with a unique LUN. In certain cases (such
as after deleting another logical drive) it may be desirable to change the number that a
logical drive is presented as. This can be done at any time, bearing in mind that any attached
host systems may need to be rebooted or reconfigured to maintain access to the logical drive.
Mapping table
A table indexed by sequential LUN values, indicating the selected BUS:TARAID
GroupET:LUN devices. Mapping tables are used by routers and bridges like the GEOi to
perform Ethernet-to-SCSI pathing.
MD5 Algorithm
MD5 is a way to verify data integrity, and is much more reliable than checksum and many
other commonly used methods.
MPIO
Short for Multipath Input/Output. A multipath solution built into Microsoft server-grade
operating systems. It requires the DSM to work with RAID storage array hardware.
MTU
Short for Maximum Transfer Unit. It is the largest size packet or frame, specified in octets
(eight-bit bytes), that can be sent in a packet- or frame-based network.
N_port
A Node port connects via a point-to-point link to either a single N_Port or a single F_Port.
N_Ports handle creation, detection, and flow of message units to and from the connected
systems. N_Ports are end ports in virtual point-to-point links through a fabric, for example
N_Port to F_Port to F_Port to N_Port using a single Fibre Channel fabric switch.
NAS
Short for Network Attached Storage. Data storage connected to a network that provides
network clients access to data using file-level protocols.
NAT
Short for Network Address Translation. A technique for passing network traffic through a
router whereby one set of IP addresses is used on one side of the router and another set of
addresses is used on the other side. This is done to avoid address conflicts and to increase the
address space of the internal network.
Network Interface Card (NIC)
A board that provides network communication capabilities to and from a computer.
NDMP
Short for Network Data Management Protocol. A protocol standard used by some Network
Attached Storage systems to provide an industry standard means to do backup and restores
of the NAS system without the need for 3rd party agents to be installed on the NAS device.
Also see
10400310-003 01/2013
NDMP.org for further details.
©2010-13 Overland Storage, Inc.
Glossary
GL-7
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