use strict;
use warnings;
use 5.010;

my %states;
while (<DATA>) {
    chomp;
    if (/^ ([^:]+) : \s+ (.*)/x) {
        $states{$1} = $2;
    }
}

use Data::Dumper;
print Dumper \%states;

__DATA__
Controller Status:          Optimal
NCQ status:                 Enabled
Status of logical device:   Optimal

Power State:                RPM
Supported Power State:      RPM, Powered off

##</code><code>##

$VAR1 = {
          'Supported Power State' => 'RPM, Powered off',
          'Power State' => 'RPM',
          'NCQ status' => 'Enabled',
          'Status of logical device' => 'Optimal',
          'Controller Status' => 'Optimal'
        };