I am trying to decide on what data structure to use

I think mine would look something like:

{ 
    'nguyenhe' => {
        'hostname1' => '1929 20 Henry Nguyen,555-555-555',
    }, 

    'bjose' => {
        'hostname1' => '1990 20 Bobby Jose,x3338', 
        'hostname2' => '1995 20 Bobby Jose,x3338'
    }, 

    'vjain' => { 
        'hostname2' => '2098 20 Vineet Kumar Jain, offshore' 
    },

    'llai' => {
        'hostname2' => '2122 20 Levius Laibjose'
    },
}
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