RAID-5

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I understood all the material concerning disks but i just wanted to ask something cause i cant really do this in my lab.. lets say you have your three disks (20gb each) and we have a RAID-5 which will be 40Gb plus our parity.

Now one morning i get see that one of the disk fails.. then what? what is the process of recovering the data using parity? lets start off by assuming i have a new 20gb drive in where the broken one was... by default its basic so how do i do about getting the RAID all up and running again and my data back?

 

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any decent raid setup uses a hardware raid controller that allows for hot swappable disks. which means that while the system is still up and running you just remove the faulty disk, insert the new disk, and let it rebuild itself. peace of cake.
if you have a software raid config inside windows, then you can also easily repair the volume. see: http://technet2.microsoft.com/WindowsServer/en/Library/33637922-ed94-4ef5-bfbd-5f04581090b21033.mspx

 

you can fix a new 20 gb, use disk management and convert it to dynamic , while converting it will ask you to add to raid 5 . thats all . your drive will start working same as before.

 

Would i be able to test this in a lab using 3 drives


ie shut the machine down remove a drive and then start it up again with a new drive in place ? would it still rebuild ?

 

yikes! that was a while back.. you initialize the new disk, convert it to dynamic then reactivate the disk and it should be all good!

 

Depends on what raid you are using. If its a hardware RAID the yu must remove the affected Drive and Connect the new one. If its software then yu have to connect the drive then open diskmanager and convert the new disk to the dynamic and repair . Thats all . And if you have any provlem in doing that go to www.vmware.com and download the vmware workstation and practice the software raid in it.. Its not going to affect your lab server.

 

Normally I pull the dead disk and slip in a fresh one. Walk away get a coffee and watch it sync up. But I NEVER use software RAID 5 I always use a hardware implimentation.

 

Thoughts on RAID 10 anyone?

J.

 

Define what RAID 10 is? I've seen at least two versions.

 

Striping with parity and mirroring - I think!

J.

 

Two sets of mirrored drives, which are then striped.

See this excelent article outlining the various RAID arrangements.

Harry.

 

Here is a simple demonstration video for setting up a RAID 5 software set under Windows 2003 Server:

http://www.johnbradbury.com/training/raid5.html

 

Wow, quite stunning H.

Thanks for that.

J.

 

John,

Welcome aboard, thanks for your link, appreciated

 

My sentiments entirely, thanks John!

J.