Areca ARC-1231ML/1261ML/1280ML, ARC-1110 Q5 What is the difference between RAID 6 and RAID 5?

APPENDIX

Q4: What PCI slots are supported by the SATA RAID controllers?

Answer:

For all PCI-X SATA RAID controllers, install card in a 64-bit/133MHz PCI-X for the best performance. It also can be used in 64-bit / 66 MHz slots, 32-bit/66MHz PCI slots as well as 32-bit/33MHz slots. All PCI-X SATA RAID controllers can not work with 5V PCI slot. PCI-Express SATA RAID controllers require an x8 or x16 slots. The card can function in x4 or x1 signal slots if those slots are open at the end to accept larger x8 cards, but performance will be reduced in these slower slots.

Check the Areca FAQ website for motherboard a compatibility list.

Q5: What is the difference between RAID 6 and RAID 5?

Answer:

RAID 6 allows two drives to fail simultaneously without downtime or data loss. However, RAID 5 only allows one drive to fail. RAID 6 thus provides a much higher level of fault tolerance than RAID 5. It is a perfect solution when data is mission-critical.

Due to this higher level of protection, users can set up larger RAID volumes, spanning up to 56 physical drives. With the ARECA RAID 6 engine, RAID 6 and RAID 5 have similar performance in the SATA RAID controller.

Q6: What products support RAID 6?

Answer:

RAID 6 is available on controller models with the RAID 6 engine installed.

Q7: What operating systems are supported?

Answer:

The SATA RAID controllers support Microsoft® Windows® Server 2003, Windows XP, Windows 2000, Red Hat Linux, SuSE Linux, and FreeBSD. For specific OS versions, see http://www.areca.com. tw for more information.

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