Glossary - IBM Ultrastar 36LP Installation And Reference Manual

IBM storage products
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You must provide termination externally, either from another device or from a separate
termination block.
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Depending on how the adapter handles the "Diff Sense" line on the interface, you may need to
set the jumper on the drive to Force Single Ended mode.
ü On multi-channel SCSI adapters, do not use more than two channels off each adapter.
ü In RAID environments, it is important to disable SCAM.
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Disable at the adapter, if available.
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Disable at the drive. This is only necessary with the DORS-3xxxx, DCAS-3xxxx and
DDRS-3xxxx family of SCSI drives. Newer drives have SCAM disabled as default or removed
completely.
E. Glossary
ANSI (American National Standards Institute). ANSI is the lead organization for encouraging and
developing technological standards. ANSI represents the United States in the IEC (International Electro-
technical Commission) and the ISO (International Standards Organization).
Backup Storing information from a hard drive to another storage area in order to prevent data loss.
BIOS (Basic Input/Output System) The BIOS is the first level of software contained in a computer. It
provides basic, low level control for keyboards, video, hard disk drives, and floppy drives. It also provides
the initial intelligence that allows the computer system to find an operating system to run.
Boot/Boot-up To prepare a computer for operation by loading an operating system.
Capacity The amount of information, expressed in bytes, that can be stored on a hard drive. Also
known as storage capacity.
Compatibility The capability of a hardware or software component to conform with the interface
requirements of a given data processing system without adversely affecting its functions.
Disk drive The primary data storage device used by computers. Disk drives are used to record, store
and retrieve digital information.
Electrostatic discharge The rapid change in electrical energy caused by static electricity. This can
damage or destroy electronic equipment or hardware. Electrostatic discharge can be prevented by
grounding oneself before handling any electronic equipment.
FAT16 & FAT32 (File Allocation Table) The file allocation table is a group of sectors in a hard drive that
contains address chains for the different files on a hard disk drive. There are usually two FATs (kept in
different locations) on a hard drive. FAT32 is available in the Windows® 95 & Windows® 98 operating
systems. FAT32 receives its designation because it allows 32 bits of addressing as opposed to 16 bits in
the FAT16 file system.
FDISK FDISK is a program run in DOS that allows a user to partition a hard disk drive. Partitioning your
hard disk drive is essential for it to work properly.
Format To prepare a hard drive so that it can store data. In the DOS formatting process, the computer
verifies the clusters within a partition.
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