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the link i provided in the referenced posting actually explains raid 0 thru
5. I guess raid 0 is not considered true raid because there is no fault
tolerence, but the document does say that it increases performance - whether
read or write performance is boosted is a little vague. As i recall, if you
use seperate channels for each disk, it will increase write performance,
since you can write half the data to each disk simultaneously.
i brought this up in the context of the raid question because i just
acquired 3 identical scsi disks that i would like to make a performance
(raid 0) array with - so that i can capture large amounts of digital video.
i've found that i can only capture a few minutes of video before the
disk/memory get's overwhelmed. i was hoping that a 3 disk non-redundand
array would allow me capture this continuous video.
does anyone else have an opinion on the feasibility of video capturing with
this method? buying disks that spin faster is not an option at this time.
thanks
>> I still think that striping provides faster data writes. Mirroring
>> will increase your read ability.
>
> You should really read the linuxdoc on scsi raid. There are different
> levels of raid. Most of them increase redundency so they make the
> drives a bit smaller, but give you redundency. I don't think that they
> speed things up.
>
> A low number raid (0?) will split data b/w two drive. This is worse
> than on drive in terms of stability b/c if either drive fails you lose
> all data whereas w/ raid 5, if you lose one drive you lose no data
> (other drives can rebuild old drive on a replacement).
>
> You need to figure out what you want stability OR speed and pick one,
> not both. :( Then decide raid level that's best for you. I say go w/
> raid 5 b/c I really care about my data (and uptimes).
>
> Fred
>
>
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______________________________________________________________________
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Announcements-http://lists.phillylinux.org/mail/listinfo/plug-announce
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