This might be useful for sysadmins who manage Solaris servers. The iostat -En command can be used to check for cumulative disk errors but the output is rather dense so it can be difficult to sort the wood from the trees. This script uses Term::ANSIColor to make errors easier to spot.

use strict;
use warnings;

use Term::ANSIColor qw{ :constants };

my $rxTriggers = do {
   my @triggers = (
      q{Soft Errors: },
      q{Hard Errors: },
      q{Transport Errors: },
      q{Media Error: },
      q{Device Not Ready: },
      q{No Device: },
      q{Recoverable: },
      q{Illegal Request: },
      q{Predictive Failure Analysis: },
      );
   local $" = q{|};
   qr{(@triggers)(\d+)}
   };

my @iostatCmd = qw{ /usr/bin/iostat -En };
open my $iostatFH, q{-|}, @iostatCmd
   or die qq{open: @iostatCmd |: $!\n};

print q{-} x 60, qq{\n};
while ( not eof $iostatFH )
{
    my $record;
    $record .= $_ for
       map { eof $iostatFH ? () : scalar <$iostatFH> }
       1 .. 5;

    substr $record, 16, 0, RESET;
    substr $record,  0, 0, BOLD;
    $record =~
       s{$rxTriggers}
        { $2 eq q{0}
          ? $1 . GREEN . $2 . RESET
          : YELLOW . $1 . RED . $2 . RESET }eg;

    print $record;
    print q{-} x 60, qq{\n};
}

close $iostatFH
   or die qq{close: @iostatCmd |: $!\n};
[download]

I no longer have a working Solaris box to provide example output but I hope this will be useful for somebody out there.