Glossary of Terms
10BaseT
Ethernet with a data transfer rate of 10Mbits/sec.
100BaseT
Also known as Fast Ethernet with a data transfer rate of 100Mbits/sec.
AG
Array Group.
ACP
Array Control Processor. The group of processors on a PCB that performs the physical access of the disk drives across four
ACP pair
A combination of two ACPs. Designed in such a manner as to facilitate redundancy and performance.
Alert
A message or log that a computing element generates as the result of an error event collection and analysis. An alert indicates that there is a need to perform some service action, and it can be sent by a variety of methods to operations personnel.
API
Application Programmer’s Interface or API. A standardized set of software commands (calls) that can be used to access a particular software program in a consistent and reliable way.
Array frame
Array frames are the three left and three right cabinets of the Lightning 9900™ Series systems housing HDDs (high density disks), power supplies, and batteries.
Array group
The physical arrangement of disk drives independent of RAID level used – 3 Data + 1 Parity for
Asynchronous Remote Copy
The transmission of data between two devices that are not synchronized with a clocking scheme or other technique. The sender can send data at any time and the receiver can accept information when it becomes available. Synchronous
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