Cloud Computing Assignment No. 2

Cloud Computing Assignment no. 2

Hints for answer writing are given below each and every question.

1. What is cloud security and why do we need it?

2. What are the challenges and legal issues involved in cloud computing?

3. What is data security and What is the role of data security in cloud computing?

4. How cloud security works?

5. What is cloud storage write its advantages?

6. Explain different types of cloud storage in cloud computing.

7. Write the differences between cloud storage and cloud computing.

8. Explain storage area network with its advantages and disadvantages.

Storage Area Network

Differences Between SAN and NAS.

SAN	NAS
1. SAN stands for Storage Area Network.	1. NAS is an abbreviation of Network Attached Storage.
2. It uses the fiber channel for connecting the several data storage devices.	2. It is a hardware device which attaches to LAN through an Ethernet connection.
3. It is used in enterprise and professional environments.	3. It is typically used in homes.
4. It needs more administration for managing.	4. It is managed easily.
5. In this, data is identified by the disk block.	5. In NAS (Network Attached Storage), both file name and byte offset are used for identifying the data.
6. Storage Area Network is more complex than the Network Attached Storage.	6. Network Attached Storage is less complex than the Storage Area Network.
7. It is more costly than the Network Attached Storage.	7. Its cost is less than the SAN.
8. It depends on the Local Area Network and requires the TCP/IP network.	8. It does not depend on the Local Area Network but uses the high-speed fibre channel network.
9. ISCSI, FCoE, FCP, and Fc-NVMe are the protocols used in SAN.	9. AFP, NFS, and SMB are the protocols used in NAS.
10. In SAN, block by block technique is used for backup and recovery.	10. Files in NAS are used for backup and recovery.
11. It works easily with the virtualization technique.	11. NAS is a file storage device that does not work with the virtualization technique.
12. The file system is managed and controlled by the servers in SAN.	12. The file system is managed by the head unit in NAS.

Differences Between SAN and DAS.

SAN	DAS
1. SAN is a short form of Storage Area Network.	1. DAS is a short form of Direct Attached Storage.
2. It uses block by block copying technique for backup and recovery.	2. It uses sectors for backup and recovery.
3. This storage Device is complex than the DAS device.	3. This storage device is simple, not complex.
4. Storage Area Network is slightly difficult to install and set up.	4. Direct attached Storage is easy to set up and install.
5. The cost of this storage device is higher than the DAS device.	5. Its cost is low as compared to SAN.
6. The capacity of SAN is more than the 1012 bytes.	7. The capacity of DAS is only 109 bytes.
7. This storage device allows users to share the files on different OS.	7. This storage device does not allow users to share the files on different OS.
8. It uses Internet Protocol and Fibre Channel for transmission of data.	8. It uses IDE/SCSI for the transmission of data.

Advantages of SAN

It can scale up more.
Security is another key benefit of SAN. Users should use SAN as a good solution if they wish to secure their data.
On SAN, users can quickly apply a variety of security features.
The network can easily add or delete storage devices.
Users can simply add the devices if they require extra storage.
This storage network is less expensive than others.
Better disc utilization is a significant benefit of using the SAN (Storage Area Network).