LVS | Linux Virtual Server. Provides a centralized login capability for system users. LVS handles |
| incoming login requests and directs them to a node with a login role. |
M |
|
Management | See MP. |
Processor |
|
master host | See LSF master host. |
MCS | An optional integrated system that uses chilled water technology to triple the standard cooling |
| capacity of a single rack. This system helps take the heat out of |
| servers and blades, enabling greater densities in data centers. |
Modular Cooling | See MCS. |
System |
|
module | A package that provides for the dynamic modification of a user's environment by means of |
| modulefiles. |
| See also modulefile. |
modulefile | Contains information that alters or sets shell environment variables, such as PATH and MANPATH. |
| Modulefiles enable various functions to start and operate properly. |
MP | Management Processor. Controls the system console, reset, and power management functions |
| on HP Integrity servers. |
MPI | Message Passing Interface. A library specification for message passing, proposed as a standard |
| by a broadly based committee of vendors, implementors, and users. |
MySQL | A relational database system developed by MySQL AB that is used in HP XC systems to store |
| and track system configuration information. |
N |
|
NAT | Network Address Translation. A mechanism that provides a mapping (or transformation) of |
| addresses from one network to another. This enables external access of a machine on one LAN |
| that has the same IP address as a machine on another LAN, by mapping the LAN address of |
| the two machines to different external IP addresses. |
Network Address | See NAT. |
Translation |
|
Network | See NIS. |
Information |
|
Services |
|
NIS | Network Information Services. A mechanism that enables centralization of common data that |
| is pertinent across multiple machines in a network. The data is collected in a domain, within |
| which it is accessible and relevant. The most common use of NIS is to maintain user account |
| information across a set of networked hosts. |
NIS client | Any system that queries NIS servers for NIS database information. Clients do not store and |
| maintain copies of the NIS maps locally for their domain. |
NIS master server | A system that stores the master copy of the NIS database files, or maps, for the domain in the |
| /var/yp/DOMAIN directory and propagates them at regular intervals to the slave servers. Only |
| the master maps can be modified. Each domain can have only one master server. |
NIS slave server | A system that obtains and stores copies of the master server's NIS maps. These maps are updated |
| periodically over the network. If the master server is unavailable, the slave servers continue to |
| make the NIS maps available to client systems. Each domain can have multiple slave servers |
| distributed throughout the network. |
O |
|
OA | The enclosure management hardware, software, and firmware that is used to support all of the |
| managed devices contained within the HP BladeSystem |
128 Glossary