You are an Enterprise administrator for contoso.com. The corporate network of the company consists of a single Active Directory domain. All the servers in the domain run Windows Server 2008 and all client computers run Windows Vista.
The company has recently merged with a partner company called TechKing.com and started using a Windows Server 2008 server of that company called TechKingServer1. The server has five internal SCSI hard disks that are connected to an onboard SCSI controller.
You have planned to deploy the TechkingServer1 as a file server and place it in your company’s premises. You have to now plan for a storage strategy that ensures that the user data is physically separated from the operating system data and maximum disk space is available for the data storage.
You also need to ensure that if disk fails, the integrity of the data is maintained on the server and the operating system server can start successfully. To achieve this, you only want to use the hardware that is available on the server.
Which of the following options would you choose to accomplish the desired goal? (Select two. Each correct answer will present a part of the answer)
A.
Allocate three disks to a single RAID 5 volume for the user data.
B.
Allocate four disks to a single RAID 5 volume for the user data.
C.
Allocate three disks to a striped volume for the user data.
D.
Allocate two disks to a mirrored volume for the operating system data.
E.
Allocate one disk to a simple volume for the operating system data.
F.
Allocate three disks to a mirrored volume for the operating system data.
G.
Allocate all the disks to a single RAID 5 volume for the user data and for the operating system data.
Explanation:
To ensure that if disk fails, the integrity of the data is maintained on the server and the operating system server can start successfully, you need to allocate three disks to a single RAID 5 volume for the user data and allocate two disks to a mirrored volume for the operating system data.
Two disks to a mirrored volume for the operating system data are created using RAID version 1, which is the first real implementation of RAID. It provides a simple form of redundancy for data through a process called mirroring. This form typically requires two individual drives of similar capacity. One drive is the active drive and the secondary drive is the mirror. When data is written to the active drive, the same data is written to the mirror drive.
This provides a full level of redundancy for the data on the system. If one of the drives fails, the other drive still has all the data that existed in the system. It is best to place OS files because it provides full redundancy of data.
A single RAID 5 volume for the user data is best because it is the most powerful form of RAID that can be found in a desktop computer system. This method uses a form of striping with parity to maintain data redundancy. The parity bit shifts between the drives to increase the performance and reliability of the data. A minimum of three drives is required to build a RAID 5 array and they should be identical drives for the best performance. The drive array will still have increased performance over a single drive because the multiple drives can write the data faster than a single drive. The data is also fully redundant because of the parity bits. In the case of drive 2 failing, the data can be rebuilt based on the data and parity bits on the two remaining drives. Data capacity is reduced due to the parity data blocks.