A distinction is madebetween physical records and logical records. A logical rec
ID: 3616948 • Letter: A
Question
A distinction is madebetween physical records and logical records. A logical record is acollection of related data elements treated as a conceptual unit,independent of how or where the information is stored. A physicalrecord is contiguous area of storage space that is defined by thecharacteristics of the storage device and operating system. Assumea disk system in which each physical record contains thirty120-byte logical records. Calculate how much disk space (insectors, tracks, and surfaces) will be required to store 300,000logical records if the disk is fixed-sector with 512 bytes/sector,with 96 sectors/track, 110 tracks per surface, and 8 usablesurfaces. Ignore any file header record(s) and track indexes, andassume that records cannot span two sectors.
Explanation / Answer
Dear User, Given data: The physical record size in disk system = thiry 120-byte logicalrecords The number of logical records = 3,00,000 Thenumber of bytes per sector = 512bytes The number of sectors per track = 96 sectors The number of tracks per surface = 110 tracks The number of usable surfaces = 8 Each sector can hold 4 logical records. The required number of sectors = 300,000/4 =75000 sectors The required number of tracks = 75000/96 =782tracks The required number of surfaces = 782/110 =8surfaces I hope this will helps to youRelated Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.