Storage Managenment

Q1. DAS provides an economically viable alternative to other storage networking solutions. Justify this statement.

Ans- DAS provides an economically viable alternative to other storage networking solutions as- • DAS configuration is simple and can be deployed easily and rapidly.
• Setup is managed using host-based tools, such as the host OS, which makes storage management tasks easy for small and medium enterprises.
• DAS is the simplest solution when compared to other storage networking models
• Requires fewer management tasks
• Less hardware and software elements to set up and operate.

Q2. Why is SCSI performance superior to that of IDE/ATA? Explain the reasons from an architectural perspective.

Ans- SCSI is a set of standards used for connecting a peripheral device to a computer and transferring data between them. Often, SCSI is used to connect hdds and tapes to a host. SCSI can also connect a wide variety of other devices such as scanners and printers. And if we compare it with IDE/ATA then the comparison will be like

Comparison of IDE/ATA with SCSI
Feat ure IDE/ATA SCSI Features IDE/ATA SCSI • Speed 100, 133, 150 MB/s 320 MB/s
• Connectivity Internal Internal and external
• Cost Low Moderate to high
• Hot-pluggable No Yes
• Performance Moderate to low High
• Ease of configuration High Low to moderate
• Maximum number of Devices supported 2 16

Q3. Explain the concept of NAS. Discuss the File-sharing Protocols used for NAS.

Ans- NAS is a preferred storage solution that enables clients to share files quickly