Re: [Networker] Cloning parallelism
2008-01-25 01:46:56
Because 1 drive reads from 5 disks, and 2 drives (if the volumes are on
other disks and that chance is very high) read from 10 disks.
A Darren Dunham wrote:
On Thu, Jan 24, 2008 at 08:19:25AM +0100, Tim Verbois wrote:
Yaron,
1 drive gives 70 MB/s, the whole VTL has a top speed of 300 MB/s. So
when we could read from 2 drives and write it to 1 LTO3 drive, it should
increase the speed with at least 30 MB/s for data that is compressable
(like file server data, we have a lot of that).
That's the bit I don't understand. It's a VTL. Why should reading from
two "drives" be significantly faster than reading from one? If it's all
coming from disk, why the speed increase?
--
Tim Verbois
Unix Team
EDS-Telindus
02/553.71.73
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