Internal Cabling Diagrams 10-5

„RAID5 (striping + parity)

Stores data onto four hard disk drives by dividing it (striping) in the same way as RAID0. With RAID5, parity (redundant data) is also divided and stored on four hard disk drives. Even if one of the configured hard disk drives becomes faulty, data can be used without any problem.

IMPORTANT:

„Because data is read from or written to four hard disk drives concurrently, the disk access performance is lower than that of the configuration using only a single disk.

„Because the parity data is saved, the logical capacity is a little lower than the total capacity of the four hard disk drives.

To build a disk array, at least two hard disk drives for RAID0 or RAID5, and at least three hard disk drives for RAID5 are required.

Power

 

 

supply

 

5.25-inch device bay

 

 

Mother board

DVD-ROM drive

 

 

 

Disk array

Fourth

 

controller

 

hard disk drive

 

 

Third

HDD cage

 

hard disk drive

 

Second

 

 

hard disk drive

 

 

First

 

 

hard disk drive

 

IDE LED connector

IDE cable

 

SAS cable

 

 

Connect the LED cable provided with the server to the LED connector on the mother board and the disk array controller for indicating the hard disk drive access status.

You can check the disk status (disk error or rebuilding of disk array) through the disk array management utility, MegaRAID Storage Manager, coming with the disk array controller.