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P400 performance

Occasional Contributor

P400 performance

On linux with 4 disks in RAID 5. Does performance below are correct ? (specially for copy)

time sh -c "dd if=/dev/zero of=/file1 bs=1024k count=4000;"
4000+0 records in
4000+0 records out
4194304000 bytes (4.2 GB) copied, 20.1717 seconds, 208 MB/s
real 0m20.192s
user 0m0.001s
sys 0m9.238s

time cp /file1 /file2
real 1m26.433s
user 0m0.657s
sys 0m14.142s

Thanks for your advice