about hdd performance, here's what I have
$ sudo hdparm -t /dev/sda
/dev/sda: Timing buffered disk reads: 238 MB in 3.02 seconds = 78.86 MB/sec
$ sudo dd if=/dev/zero of=test bs=4M count=250 250+0 records in 250+0 records out 1048576000 bytes (1.0 GB) copied, 16.7282 s, 62.7 MB/s
$ sudo dd if=/dev/sda4 of=/dev/null bs=4M count=250 250+0 records in 250+0 records out 1048576000 bytes (1.0 GB) copied, 14.0408 s, 74.7 MB/s
about hdd performance, here's what I have
$ sudo hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 238 MB in 3.02 seconds = 78.86 MB/sec
$ sudo dd if=/dev/zero of=test bs=4M count=250
250+0 records in
250+0 records out
1048576000 bytes (1.0 GB) copied, 16.7282 s, 62.7 MB/s
$ sudo dd if=/dev/sda4 of=/dev/null bs=4M count=250
250+0 records in
250+0 records out
1048576000 bytes (1.0 GB) copied, 14.0408 s, 74.7 MB/s