Acer HDS AMS200 Reference Manual page 297

Remote
Maintena
nce
Function
(SNMP)
R/W
S-
ATA(Seri
al-ATA)
SNMP
Spare
disk
System
LU
UPS
User LU
The SNMP agent support function reports failures to the
workstation which monitors the network via the SNMP of
the open platform.
Read/Write.
S-ATA is an abbreviation for Serial Advanced Technology
Attachment, and it is one of the extended specifications
of IDE (Integrated Drive Electronics) standard for
connecting a memory device such as HDDs.
Serial ATA is a successor specification to the conventional
ATA specification, changing from the parallel transmission
mode, adapted in the existing ATA specifications such as
Ultra ATA, to serial transmission mode. This enables S-ATA
to provide fast transfer rate using simple cables, and S-
ATA is compatible with conventional parallel ATA
standards.
SNMP is an abbreviation for Simple Network Management
Protocol, and it is one of the network protocols developed
to manage a network.
A disk drive which is mounted separately from the disk
drives for usual write and read operation; when a failure
occurs in a disk drive, data stored in the failed drive is
copied to the spare disk drive so that the disk subsystem
can continue to be available equivalently to the original
subsystem.
Indispensable LU to NAS system. System LU indicates NAS
OS LU, dump storage LU, failure information LU, NAS
Shared LU, backup LU of NAS Shared LU and command
device.
Uninterrupted Power Supply
A backup power supply which is mounted on the AMS200
unit to prevent shutdown of the unit even when power
stoppage or momentary power interruption occurs.
LU for storing user data in the NAS system.
Acer | HDS AMS200 User and Reference Guide 277