[mythtv-users] question about RAID
adeffs at gmail.com
Mon Jan 9 20:15:58 UTC 2006
On Monday 09 January 2006 14:53, James C. Dastrup wrote:
> >All RAID0 does is join (or grow) partitions together. It is very useful
> > if you have, for example, three 100GB disks about like them joined into a
> > 300GB partition.
> Not exactly. A true RAID 0 (or a striped set) alternates writing each block
> from one disk to the other. This increases performance because 2 chunks
> of data can be written at the same time - one chunk to disk 1, one chunk to
> disk2, etc.
> Joining partitions together, or extending a volume, is not RAID 0. This
> does not necessarily increase performance, because data typically won't be
> written to the second disk until the first is full.
> In both scenarios, your useable space equals all your disks combined, but
> only the striped set improves performance.
So what will mdadm do? What is my best option for using 2 drives to get the
most speed out of them as a combined drive?
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