Cache Memory The cache is logically between the CPU and main memory. Physically, there are several possible places it could be located. Tanenbaum, Structured.

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Presentation transcript:

Cache Memory The cache is logically between the CPU and main memory. Physically, there are several possible places it could be located. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

A five-level memory hierarchy. Memory Hierarchies A five-level memory hierarchy. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

A portion of a disk track. Two sectors are illustrated. Magnetic Disks (1) A portion of a disk track. Two sectors are illustrated. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

A disk with four platters. Magnetic Disks (2) A disk with four platters. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

A disk with five zones. Each zone has many tracks. Magnetic Disks (3) A disk with five zones. Each zone has many tracks. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

Some of the possible SCSI parameters. SCSI Disks Some of the possible SCSI parameters. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

RAID (1) Redundant Array of Inexpensive Disks RAID levels 0 through 2. Backup and parity disks are shown shaded. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

RAID (1) Redundant Array of Inexpensive Disks RAID levels 3 through 5. Backup and parity disks are shown shaded. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0

Recording structure of a Compact Disk or CD-ROM. CD-ROMs (1) Recording structure of a Compact Disk or CD-ROM. Tanenbaum, Structured Computer Organization, Fifth Edition, (c) 2006 Pearson Education, Inc. All rights reserved. 0-13-148521-0