30 Questions
What is the estimated lifespan of the COLD (Computer Output Laser Disk)?
100 years
What is the capacity of a single-layer CD-ROM in MB?
650MB
What is the benefit of using blue-violet lasers in Blu-Ray technology?
Higher data density due to shorter wavelength
What is the single-layer capacity of a Blu-Ray disc in GB?
25GB
What is the advantage of Blu-Ray discs over HD-CDs?
No backward compatibility with DVDs
What is the name of Sony's product for data archiving and retrieval?
Professional Disk for Data (PDD)
What is the benefit of using optical disks for document output in large installations?
Lower cost due to less paper used
What is the maximum number of layers that can be stacked on a Blu-Ray disc?
6 layers
What is the current availability of discs for home use?
Double-layer discs
What was the capacity of the first-generation magnetic tape?
Under 11MB
What are the two main recording methods used in modern magnetic tapes?
Serpentine and Helical Scan
What type of tape systems use helical scan recording?
Digital Audio Tape (DAT) systems
Who collaborated to establish the LTO standard?
HP, IBM, and Seagate
What is the current generation of LTO standard?
Gen 5
What is the uncompressed data transfer rate of Gen 5 LTO tapes?
208MB per second
What is the uncompressed data storage capacity of Gen 5 LTO tapes?
1.4TB of data
What is the primary advantage of using LTO tapes?
Multiple error correction levels for superior reliability
What is the major difference between serpentine and helical scan recording methods?
How the read/write head interacts with the tape
What is the primary purpose of RAID technology?
To address problems related to disk reliability, cost, and performance
What is the current generation of the LTO standard?
Gen 5
What is the uncompressed data transfer rate of Gen 5 LTO tapes?
208MB per second
What is the uncompressed data storage capacity of Gen 5 LTO tapes?
1.4TB of data
Who collaborated to establish the LTO standard?
HP, IBM, and Seagate
Which RAID configuration provides 100% redundancy and good performance?
RAID 1
What is the primary advantage of RAID 5 over RAID 4?
Distributed parity
Which RAID configuration is not suitable for commercial systems?
RAID 0
What is the purpose of the Hamming code drive in RAID 2?
Error correction
In which RAID configuration is data written in blocks across the entire array?
RAID 0
What is the fault-tolerance capability of RAID 6?
Two disk failures
Which RAID configuration is a combination of RAID 4 and distributed parity?
RAID 5
Test your knowledge of optical storage devices such as CD-ROM, DVD, and WORM COLD. Learn about their storage capacities, error correction, and lifespan. Evaluate your understanding of these devices and their applications.
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