Mengenal jenis-jenis RAID

Dalam beberapa kali pekerjaan, client meminta untuk dipasangkan RAID. RAID adalah singkatan dari 
Redundant Array of Inexpensive (Independent) Disks. Ada beberapa tipe RAID yang sering digunakan, diantaranya: RAID:

  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 10 (also known as RAID 1+0)
This article explains the main difference between these raid levels along with an easy to understand diagram.

In all the diagrams mentioned below:
  • A, B, C, D, E and F – represents blocks
  • p1, p2, and p3 – represents parity

RAID LEVEL 0


Following are the key points to remember for RAID level 0.
  • Minimum 2 disks.
  • Excellent performance ( as blocks are striped ).
  • No redundancy ( no mirror, no parity ).
  • Don’t use this for any critical system.

RAID LEVEL 1

Following are the key points to remember for RAID level 1.
  • Minimum 2 disks.
  • Good performance ( no striping. no parity ).
  • Excellent redundancy ( as blocks are mirrored ).

RAID LEVEL 5


Following are the key points to remember for RAID level 5.
  • Minimum 3 disks.
  • Good performance ( as blocks are striped ).
  • Good redundancy ( distributed parity ).
  • Best cost effective option providing both performance and redundancy. Use this for DB that is heavily read oriented. Write operations will be slow.

RAID LEVEL 10


Following are the key points to remember for RAID level 10.

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