raid 0, 1 0+1 , span ?

[lagger]

my new mobo supports the usual 0 1 and 0+1 raid and also Span ?? what is this Span option ( Hipoint onboard controller) does this create a single volunme for the 2 disks ?

lagger

<b><font color=blue>Computers run on smoke, I let the smoke out of mine and it quit working </b> </font color=blue>

 

[camieabz]

Guessing here.

Spanning is connecting several devices in a RAID array, which creates one single logical drive. In essence an extended version of RAID 0.

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[FatBurger]

Close. Spanning simply makes all the disks appear as one. No change whatsoever on either performance or data security. Think of it as the exact opposite of a partition.

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[ejsmith2]

Yep. There's a paper on the 9 modes of raid somewhere on the next. One of those Caltech geeks wrote it, I think.

Mode 0 is just a 'span'. I've got 3 hard disks doing that with WinXP (software). It writes the info to the disks, in order, but if you lose one drive, you'll probably have to recover the data with a hex editor from the other two.

 

[FatBurger]

Mode 0 is just a 'span'.

No, RAID 0 is striping, which (theoretically) doubles performance.

but if you lose one drive, you'll probably have to recover the data with a hex editor from the other two.

That sounds closer to RAID 5.


<A HREF="http://www.techweb.com/encyclopedia/defineterm?term=raid" target="_new">RAID</A>

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[ejsmith2]

Hmmmmm.

So 'spanning' never figured into the Berkley geeks' paper; I guess there's really nothing 'redundant' about it, so it makes sense...

 

[FatBurger]

Span isn't really a RAID mode, it's just another option that most RAID controllers have.

Kind of like Windows coming with Minesweeper. It's not strictly a part of the OS and you'll hopefully never use it, but it's there.

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[ejsmith2]

"hopefully never use it, but it's there"

(insert your best maniacal laugh, here)

 

[texas_techie]

As a side note... There are many articles on the web about spanning. Have a look for yourself. Saw one here at Toms and one on Anandtech. DIdnt really pay attention to spanning though cuz I knew I wouldnt use it... sorry.