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The entire machines are run off the network, no storage needed
I use PXE to network boot and then the machines mount an iSCSI drive and boot the OS.
iSCSI is basically scsi over ethernet
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Ive heard of people running windows home server in VM for the backup functionality. Just use your server as the storage pool.
Not a bad idea, but I havn't tried it myself
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Ok, thanks for the clarification (thinking about it, it definitely makes sense). In any case several I/O operations are involved which makes the CPU only one part of the equation.
And explains why a faster controller can make a lot of difference.
For troubleshooting and bug reporting please make sure you
read this first (usually it's enough to follow instructions in the second post).
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maxinc
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The bottleneck is in the rotational speed of the hard drive. 10.000 rpm will have higher write speeds compared to a 5400rpm since il will take a shorter amount of time between the read and write steps of the parity-write process.
At these speeds, CPU and controllers are pretty much idle, except for the old PCI controllers with more that 2 drives connected which inherit the PCI bus bandwidth limitations.
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