Operating Systems Chapter 4: File Management

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Volatile memory requires power to maintain data, while non-volatile memory retains data without power.

Volatile memory is faster because it operates at lower latencies compared to non-volatile memory.

RAM and CPU caches.

The data stored in volatile memory is lost. Signup and view all the answers

Faster memory technologies often require more advanced manufacturing processes and materials. Signup and view all the answers

Non-volatile memory. Signup and view all the answers

Using volatile memory necessitates regular data saving to non-volatile storage to prevent data loss. Signup and view all the answers

Non-volatile memory retains stored information even when the power is off. Signup and view all the answers

The faster the memory, the more expensive it is per byte. Signup and view all the answers

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Key topics include file abstraction, directory abstraction, file systems, and caching.
Hardware management of storage devices will be covered in the following chapter on I/O and devices.

Volatile memory needs continuous power to preserve data; it loses information when power is cut.
Non-volatile memory can retain data without power, ensuring information remains intact when turned off.
Common examples:
- Volatile: RAM, CPU caches.
- Non-volatile: Hard drives (HDD), solid-state drives (SSD).
General principles:
- Volatile memory typically operates faster than non-volatile memory.
- Higher speed memory tends to be more costly on a per-byte basis.