How many disks does a RAID 5 need?
RAID 5 provides fault tolerance and increased read performance. At least three drives are required. RAID 5 can sustain the loss of a single drive. In the event of a drive failure, data from the failed drive is reconstructed from parity striped across the remaining drives.
Can RAID 5 have 4 disks?
RAID 5 requires a minimum of 3 drives, and will recover data if one drive fails, but compared to RAID 1, RAID 5 offers greater write performance.
Can you do RAID 5 with 3 drives?
Raid 5 requires at least 3 disks. The data is spread accoss them so that if any 1 drive fails, no data will be lost.
What are the minimum disks needed for a RAID array?
The minimum disks that are needed for RAID 0, RAID 1, RAID 5, and RAID 10: In order to create RAID 0, you only need at least two disks. Since this type of array does not have fault tolerance, it should be used in areas where the data is constantly updated and does not have strategic importance, but at the same time requires high performance.
What is a RAID 5 system?
In the RAID 5 system, the data is divided into a minimum of three hard disks to a maximum of sixteen. Unlike RAID 0, the data is interspersed with parity bits in case of the event of a hard disk failure. The parity bits are inserted after a sequence of saved data and are distributed on all the disks.
How many disks do you lose in a RAID 5?
For a 3 disk RAID you lose the equivalent of one disk in a RAID 5 for the striping and parity.. 01-22-2004 03:37 PM This document may help explaining some of the raid theory: Thanks for using the Dell Community Forums!