Chapter 12. Secondary Storage Structure

Hub: engineering

Part of the series

Overview of Mass-Storage Structure

1. Magnetic Disks
2. Magentic Tapes

Disk Structure

1. Host-Attached Storage
2. Network-Attached Storage
3. Storage-Area Network

Disk Attachment

Disk Scheduling

1. FCFS (First-Come-First-Served) Scheduling
2. SSTS (Shortest-Seek-Time-First) Scheduling
3. SCAN Scheduling
4. C-SCAN Scheduling
5. LOOK Scheduling
6. Selection of a disk-scheduling algorithm

Disk Management

1. Disk formatting
2. Boot block
3. Bad blocks

Swap-Space Management

1. Swap-space use
2. Swap-space location
3. Swap-space management: An Example

RAID Structure

1. Improvement in performance via parallelism
2. RAID levels
3. Selecting a RAID level
4. Extensions
5. Problems with RAID

Stable-Storage Implementation

Tertiary-Storage Structure

1. Tertiary-Storage Devices
   1. Removable disks
   2. Tapes
   3. Future technology
2. Operating-System support
   1. Application interface
   2. File naming
   3. Hierarchical Storage Management
3. Performance issues
   1. Speed
   2. Reliability
   3. Cost