Computer Memory and Storage

Tape backup has historically been the most common form of backup due to its low cost per gigabyte, portability, and reliability for long-term archival storage. Tape allows for high-capacity, sequential access storage ideal for backup operations. While disk and optical backups are used, tape dominated enterprise backup for decades.

A striped volume (RAID 0) spreads data across multiple disks in parallel, significantly improving read/write performance for applications that handle many small files. This is ideal for the described scenario where a custom application writes numerous temporary files. Spanned volumes (Option B) provide no performance benefit as they simply concatenate disk space. RAID 5 (Option C) offers redundancy but slower write performance due to parity calculations. Mount points (Option D) are for organization, not performance improvement.

Enabling disk quotas allows an administrator to monitor and limit disk space usage. To track usage without denying access, you enable the quotas but do not check the 'Deny disk space to users exceeding quota limit' option. Setting a warning level helps in tracking and notification.

Basic disks allow you to set aside space (partition space) to arrange data by creating primary and extended partitions. Option A is false because basic disks support limited volumes (4 primary partitions or 3 primary + 1 extended). Options C and D describe dynamic disk features (spanned volumes and fault-tolerant RAID).

When a volume spans multiple dynamic disks and the host server fails, you must move ALL disks containing parts of the volume to another Windows Server 2003 computer, then import the foreign disks. The Disk Management utility on the target computer will recognize the volume structure. Moving only some disks (D) or using disk recovery on the failed server (B) will not work.

Creating two sets of backups provides redundancy - if one backup set is damaged, corrupted, or lost, you have another set available for recovery. System State data alone (A) is insufficient for full disaster recovery. Recovery Console (C) helps repair systems but doesn't protect against data loss. Installation media (D) is needed but doesn't constitute a backup strategy.

Access time refers to the time delay between a request for data and the moment the data begins to be delivered. It specifically measures how long the storage device takes to locate and begin retrieving the requested file. Response time is broader (system reaction), Quick Time is a media format, not a storage metric.

DDR (Double Data Rate) is a memory technology that transfers data on both the rising and falling edges of the clock signal, effectively doubling the data transfer rate compared to older Single Data Rate (SDR) memory. This synchronous timing mechanism is why it's called Double Data Rate, and it became the standard for computer RAM in the early 2000s.

RAID stands for Redundant Array of Independent Disks (originally Inexpensive Disks). It combines multiple disk drives for data redundancy, performance improvement, or both, protecting against drive failure.

SATA stands for Serial ATA (Advanced Technology Attachment), not Tape Attachment. It's a computer bus interface for connecting storage devices like hard drives and SSDs to motherboards, replacing the older parallel ATA standard.

NTFS (New Technology File System) is Microsoft's proprietary file system that was introduced with Windows NT. It offers features like file security, compression, and encryption that were improvements over the older FAT file systems.

Hard disk drives use magnetic storage technology where data is encoded on magnetic platters using read/write heads. Laser technology is used in optical drives (CD/DVD), light is used in fiber optics, and chemical storage is not a standard computer storage mechanism.

A hard disk drive contains platters (magnetic disks) that spin and store data. Motherboards and riser boards are circuit boards in the computer, not part of the HDD. Lasers are used in optical drives, not magnetic hard drives.