HP NetServer AA 4000 HP NetServer AA 6200 Solution Release 3.0 Administrator&a - Page 269

Glossary MIC status lights. The lights on the MIC handles that indicate whether various MIC communications are functioning properly. minimum downtime upgrade. A hardware or software upgrade that requires the server to be shut down (typically for a few minutes) and rebooted. mirror set. The pair of physical SCSI disks (one on each IOP) that function as one logical disk. The disks in a mirror set process and maintain identical information. If a fault occurs on one of the physical disks in a mirror set and the disk cannot be accessed, the server automatically uses the remaining disk in the mirror set to provide continuous access without losing data or network connectivity. mirrored disk. A physical SCSI disk that resides on the IOP and stores data for the server. See also mirror set. mirroring. A process for creating and maintaining a set of identical disk images on separate physical SCSI disks. See also mirror set. non-identical disks. SCSI disks configured as a mirror set that share SCSI variety characteristics, such as both being wide or both being narrow, but may be different sizes, and may also have different model numbers, or be from different manufacturers. See also mirror set. non-mirrored device. A device in a configuration that does not have a redundant counterpart, such as a tape drive, a floppy disk, or a CD-ROM. If a non-mirrored device is failed out of a configuration, it has no counterpart to provide continuous device access. A non-mirrored device cannot be failed over automatically. offline. A component state that indicates the component cannot communicate with the rest of the server configuration. For component specific information on this state, refer to Chapter 2. online. A component state that indicates the component can communicate with the rest of the server configuration. Some components transition from this state to active. For component specific information on this state, refer to Chapter 2. pointer. An industry-standard term for devices such as a mouse, trackball, or touchpad. POST. Power-On Self Test. A test that each system passes as part of its initial boot process. The content of POST is specific to the system's manufacturer and model. provider. IOP-based software driver that provides access to a specific service. For example, a SCSI provider provides access to SCSI devices, and an Ethernet provider provides access to Ethernet devices. Providers receive and process requests from the CEs. See also redirector. 253