See the drive specs by using the identifier

fdisk -l

For disk speeds make sure there is no load and run

hdparm -Ttv /dev/sdc1

Cheap and cheerful:

Read test:

dd if=/dev/zero of=./test bs=512k count=2048 oflag=direct

Write test:

/sbin/sysctl -w vm.drop_caches=3
dd if=./test of=/dev/zero bs=512k count=2048

lshw -class network