LANPrac4_20_

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 1 of 9 COMP2013 LAN Workshop Practical 4 – Backups and Disaster Recovery Planning Student Name: Student ID: Practical Class: Instructions to students - • Attempt all questions • This Practical may contribute to your final assessment mark • The Tutor can check your solutions when you are finished

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 2 of 9 Part A – Disaster Recovery Planning A1) Describe the features, advantages & disadvantages of the following RAID types: (i) RAID 0: Implement a striped disk array, the data is broken down into blocks and each block is written to a separate • Advantages: • Very simple design • The technology is easy to implement • No parity calculation overhead caused by parity control • It offers great performance, both in read and wrote operations • Disadvantages: • It’s not fault tolerant. If one drive fails, all data in the RAID 0 array are lost. It should not be used for mission-critical systems. • No redundancy (ii) RAID 1: Type of system data are stored twice by writing them to both the data drive (or set of data drives) and a mirror • Advantages: • It’s fault-tolerant • Easy to implement • Its offers increased read speed and a write-speed that is comparable to that of a single drive. • Disadvantages: • The effective storage capacity in only half of the total drive capacity because all data get written twice. • The failed drive can only be replacing after powering down the computer it’s attached to • More expensive (iii) RAID 5: Protection against disk failure, is uses parity spread across all drives to rebuild data if needed • Advantages • It’s fault-tolerant • Read data transactions are very fast while write data transactions are somewhat slower. • Consistent access to all data • Disadvantages • It uses only half of the storage capacity • Drive failures have an effect on throughput • More complex to implement A2) Explain difference between RAID 01 and RAID 10 RAID 1 involves only two drives that are mirrored to provide resilience in the event of a single disk failure. RAID 10 involves at least four drives and creates a RAID 0 stripe set involving two or more RAID 10 mirrors A3) List and describe three ways that redundancy can be included into network connectivity: (i) Build multiple default gateways: Multiple routes on the subnet provides a measure of fault tolerance to the failure cause of traffic (ii) Build multiple NIC’s on the same subnet: To provide NIC redundancy, you can connect such NICs to the same hub or switch or preferably to different switches. The Interface metric property determines which of the active NICs the system will use for outbound traffic; the system uses the NIC with the lowest number in the Interface metric field. (iii) Build link aggregation: Link Aggregation Control Protocol (LACP) standard. LACP supports multiple parallel switch-to-switch and server-to-switch connections

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 4 of 9 Part B – Backup and Recovery Log in the virtual machines Windows 11 and 10, and Windows Server 2019 and follow the instructions to back up the server. B1) Follow the instructions below, logged in the virtual machine Windows 10 as User, the Administrator (as the administrator in all the following exercises unless being instructed as other users), to create a Windows System Restore point 1. Create a text file test.txt under Documents . 2. Click Start 🡺 Windows System 🡺 Control Panel 🡺 System and Security 🡺 System 🡺 System Protection ( or right click on This PC and select Properties 🡺 System Protection) 3. Click on Configure button, select Turn on system protection and click OK 4. Click the button Create … 5. Type a description of the restore point to help identify it. The system will assign the current date and time to the restore point automatically. 6. Click Create 7. Click Close and then click OK Once a System Restore point has been created, run REGEDIT (in the console box), click Yes in the popped-out warning. Modify the content of one of registry hives under HARDWARE folder found in the following expanded registry key HKEY_LOCAL_MACHINE ( Make sure you have created the restore point before modifying HKEYs, and better to save the original value to be modified so that you can manually change it back to the original setting if fail in the restoration ). You can right click an item and choose Modify to change the setting. Under Documents, open and modify test.txt that you created earlier (before setting the restore point). B2) Follow the instructions below, to restore the Windows 10 System Restore point you have created earlier. 1. Click Start 🡺 Windows System 🡺 Control Panel 🡺 System and Security 🡺 System 🡺 System Protection 2. Click System Restore … button 3. Click Next 4. Select the restore point (say, the one you just created) and click on the next button to continue the restoration. 5. Click Next and then Finish. 6. Click OK in the popped warning 7. Computer will restart. After re-login, click Close to finalise the restoration 8. Check the restored registry key value(s) and the text file. The registry keys will be restored while the text file is not affected. (i) What is the purpose of System Restore in Windows 10? (ii) Is it possible to turn off system restore, if so, how? B3) Enable System Restore of Windows 11 and create the restore point 1. Right Click Start 🡺 System 🡺 System protection (tab at the related links) 2. Enable the system protection, create the restore point. and restore the system by following the steps like that of B1 (step 3-7) B4) Restore system with the created restore point 1. Right click Start 🡺 System 🡺 System protection 2. Follow the steps like that of B2 (Steps 2-8)

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 5 of 9 As you have done in B1 & B2 , you can create a text file and modify the HKEYs to test the restoration in B3 & B4 . B5) Follow the instructions below to install the backup feature of Windows Server 2019. 1. logged in the virtual machine Windows Server 2019 2. Open the Server Manager 3. Select Quick Start 🡺 2. Add roles and features 4. Click on Next on the popped-out screen. 5. Select Role-based or Feature based installation and click Next . 6. Select the server from the server pool and Click Next . 7. The default roles will be selected. ... 8. Select Features (at the left) on the Features Wizard, Select the Windows Server Backup feature and click Next 9. Click Install (and Close and OK ). B6) Follow the instructions below to create another administrator account in Windows 10 (or Windows 11). The User accounts doesn ’ t have a password so unable to be used for the network mapping in the following exercise. We can also choose to add a password for User by changing Sign-in options. 1. Sign into Windows 10 as User (the administrator) 2. Select Start 🡺 Settings 🡺 Accounts 🡺 Family & other users. 3. Select Add someone else to this PC . 4. Select I don't have this person's sign-in information , and on the next page, select Add a user without a Microsoft account . 5. Enter a username (say Admin1 ), password, password and choose security questions, and then select Next to create the account. 6. Select the account you just created and click Change account type . 7. Under Account type , select Administrator , and then select OK . B7) Follow the instructions below, to map the network drive in the Windows 10. 1. Create a folder Backup under C:\Users\ (still login as User) 2. Right click the folder Backup and select Properties 🡺 Sharing 🡺 Share and add Admin1 with Read/Write permission (click Turn on network discovery when being asked).

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 7 of 9 1. Delete the text file you just created in the Documents . 2. Click Recovery … in the Actions Panel of the Windows Server Backup site 3. Select A backup stored on another location , click Next 4. Select Remote shared folder and click Next 5. Fill the address \\ ComputerNameOfWin10\Users\Backup and click Next. 6. Click Next to accept the most recent backup 7. Select Files and folders and click Next 8. To expand the available items to select the Documents under Administrator , click Next 9. Click Browse to select Documents under This PC and click OK 10. Select Overwrite the existing version with the recovered version (we have other options), click Next 11. Click Recover 12. Click Close 13. Check if the deleted text file has been recovered (Due to storage and time limitations, we only backup and restore a document while this feature can be used for the full server backup and restoration. Besides, you can select Backup Schedule … in the Action panel to setup a backup plan)

CO M P2 013 L A N W o rk s h o p – Pr a c t i c a l 4 - S o lu t i o n s Pa g e 8 of 9 Part C – Backup Plan Use the backup schedule below, answer the following questions. Assume that all backups are carried out at night after the business when any changes to the files are prohibited. Week 1 Monday Tuesday Wednesday Thursday Friday A0 - Child Increment A1 - Child Incremental A2 - Child Incremental A3 - Child Incremental A4 - Child Incremental B0 – Parent Differential C0 – Grandparent Full Week 2 Monday Tuesday Wednesday Thursday Friday A5 - Child Incremental A6 - Child Incremental A7 - Child Incremental A8 - Child Incremental A9 - Child Incremental B1 - Parent Differential Week 3 Monday Tuesday Wednesday Thursday Friday A10 - Child Incremental A11 - Child Incremental A12 - Child Incremental A13 - Child Incremental A14 - Child Incremental B2 - Parent Differential Week 4 Monday Tuesday Wednesday Thursday Friday A15 - Child Incremental A16 - Child Incremental A17 - Child Incremental A18 - Child Incremental A19 - Child Incremental B3 - Parent Differential Week 5 Monday Tuesday Wednesday Thursday Friday Week 5