Operating Systems (ICT246) - SUSS - Desklib

Running head: ICT246 Operating system
ICT246 Operating system
Name of the Student
Name of the University
Author Note

ICT246 Operating system 1
Question 2:
a) A server has been purchased by ZSonic Pte Ltd which is a logistic company. The server is
having 12 hard disks and every hard disk is having 1 TB of storage. The server has been
installed in the Debian OS. For this scenario raid 5 will be used. The RAID 5 is basically
a redundant array of configuration of independence disks striping. Evenly the RAID 5 can
balance the parity and data that are striped across entire disk. None of the disks will be
bottleneck. The striping also gives allowance to the users for reconstructing for the cases
of disk failure. For the scenario, for utilizing 11 hard disks the raid 5 system needs to be
used. The advantages of RAID 5 come primary from the combined utilization of parity
and disk striping. For utilizing 11 disks, parity needs to be used instead of mirroring
redundancy of data. The time when, the data will be written to the raid 5 drive, the parity
will be calculated by the system as well as it will write the parity with in the drive. The
mirroring will maintain various copies of data in every volume for using in case of
failure.
(Figure: RAID 5)
The RAID 5 is one of the common most configurations as well as it is ideal for file
servers and applications with a number of drive which is limited. The configurations of

ICT246 Operating system 2
RAID also provides fault tolerance and inexpensive redundancy of data. The data can be
read as well as accessed at the time a failed drive is being rebuilt. By keeping the data in
each of the drives, any two of the drives may combine to equal data that are stored within
the third drive. The drives can be swapped in RAID 5 that means a HDD which is failed
can be replaced and removed without the downtime. All of the RAID configurations offer
drawbacks and benefits.
3)
a)

ICT246 Operating system 3