SCSI RAID Level 1&5

  iqs 15:40 29 Jul 2008

I have just been reading about setting up a SCSI RAID for use with a server.I am not planning to create a server,just studying for the A+ Essentials Exam.

With SCSI it states Level 1 ,Level 5 ,with SATA RAID you have Level 0 & 1

Are the principles the same,but just using different numbers.

Do you still require a controller card,and must the disks be dynamic ?.


  Ditch999 16:13 29 Jul 2008

The levels relate to the same, 0 is striping, 1 is mirroring, 5 is striped with parity and requires 3 or more discs.
RAID can be with IDE SCSI SATA or a few other high end connections like Fibre Channel
You dont need a controller card specifically but a controller of some sort. A lot of modern motherboards have RAID support built in via an extra chipset like a Silicon Image one. There is also software RAID support built in to some OSs but they offer limited capabilities.
Disks must be dynamic.

  iqs 17:01 29 Jul 2008

Ditch999,and thank you for your help.It is now a little clearer,Cheers

  Ditch999 17:30 29 Jul 2008

LOL thats the brief version!

  iqs 20:16 29 Jul 2008

but to the point,and in layman's terms,many thanks

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