The goto is ugly and very probably not at all necessary. I'll assume a sub cleanup() for the moment. For some reason, you chose to only test if $metastat exists, and then you don't use it in ExecCmd. I'll assume you have a good reason for that.

The exercise is to spot the differences yourself.

use strict;        # first.
use NetIQ::Nqext;

my $sev_fail = 10;
my $metastat = "/usr/sbin/metastat";
my $resmsg   = "";

-e $metastat or cleanup;

# Assuming 0 also indicates failure:
NetIQ::Nqext::ExecCmd("metastat|grep State:|grep -v Okay") or cleanup;

my $results = NetIQ::Nqext::ExecCmd("metastat");

# Where does $do_event come from and why isn't it just a simple boolea
+n?
if ($do_event eq "y") {
    NetIQ::Nqext::CreateEvent(
        $severity,
        "Disksuite Disk(s) Need Attention",  
        $Akpid,     # capital A?
        $resmsg,
        0,          # description of the parameter (one word will suff
+ice)
        $results,
        "",         # description
        0,          # description
        0           # description
    );
}
[download]

use strict;        # first.
use NetIQ::Nqext;

my $sev_fail = 10;
my $metastat = "/usr/sbin/metastat";
my $resmsg   = "";

{
    -e $metastat or last;

    # Assuming 0 also indicates failure:
    NetIQ::Nqext::ExecCmd("metastat|grep State:|grep -v Okay") or last
+;

    my $results = NetIQ::Nqext::ExecCmd("metastat");

    if ($do_event eq "y") {
        NetIQ::Nqext::CreateEvent(
            ...
        );
    }
}
[download]