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SK0-004 · Question #900

A server administrator is attempting to restore a file from monthly backups. The administrator mentions to a coworker that the backup media has the longest seek time of any of the restore methods…

The correct answer is A. Tape drive. Tape drives are sequential-access media that must physically wind to the target data position, giving them the longest seek times of any common backup restore method.

Security and disaster recovery

Question

A server administrator is attempting to restore a file from monthly backups. The administrator mentions to a coworker that the backup media has the longest seek time of any of the restore methods. From which of the following types of media is the administrator MOST likely restoring?

Options

  • ATape drive
  • BSolid-state drive
  • CRemovable drive
  • DHard drive

How the community answered

(31 responses)
  • A
    94% (29)
  • B
    3% (1)
  • D
    3% (1)

Why each option

Tape drives are sequential-access media that must physically wind to the target data position, giving them the longest seek times of any common backup restore method.

ATape driveCorrect

Tape drives store data sequentially along a physical tape ribbon, meaning the drive must fast-forward or rewind to the exact position of the desired file before any restore can begin. This mechanical movement can take many minutes depending on the tape length and data location, a characteristic unique to sequential-access media. No other common backup media type - SSD, HDD, or removable flash drive - requires this kind of linear traversal to locate data.

BSolid-state drive

Solid-state drives use NAND flash memory with no moving parts and provide near-instant random access, making them the fastest storage option with negligible seek times.

CRemovable drive

Removable drives such as USB flash drives are random-access devices and have seek times far shorter than tape drives.

DHard drive

Hard disk drives support random access via actuator arm movement and have seek times measured in milliseconds, dramatically faster than the sequential seek time of tape.

Concept tested: Backup media types and sequential access seek time

Source: https://www.ibm.com/topics/tape-storage

Topics

#tape drive#backup media#seek time#backup restoration

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