3.3 Storage Devices Flashcards
What is the purpose of persistent storage?
To retain data even when the computer is powered down.
What are the key advantages of HDDs?
They offer large storage capacities at a lower cost compared to SSDs.
How do SSDs differ from HDDs?
SSDs use flash memory for faster data access but are more expensive per gigabyte.
What are RAIDs, and why are they used?
Redundant Array of Independent Disks; they combine multiple drives for improved speed or redundancy.
What is RAID 0 used for?
It provides faster performance by striping data across multiple drives but offers no redundancy.
How does RAID 1 ensure data redundancy?
By mirroring data, duplicating it across two drives.
What is the purpose of RAID 5 or RAID 6?
They combine redundancy and performance using striping with parity, requiring 3+ drives.
What are common use cases for removable storage?
Data portability, quick backups, and use in cameras or mobile devices.
Why are optical drives less common today?
Due to the popularity of cloud storage and USB drives, though they are still used for archival purposes.
What storage device is best for large data storage?
HDDs are ideal for large data storage like media libraries.
Which storage device is better for speed-critical tasks?
SSDs are better for boot drives, operating systems, and applications.
How do NVMe drives differ from SATA drives?
NVMe drives use faster PCIe connections, offering significantly higher read/write speeds.
What are the benefits of RAID setups?
Increased performance (RAID 0) or redundancy (RAID 1, RAID 5/6) depending on configuration.
How are RAID configurations set up?
Through BIOS/UEFI or software tools, requiring compatible drives.
What is a practical use case for memory cards?
Data storage in cameras, mobile devices, and quick transfers.
