| Change Control Event | CHG0031622 – Upgrade the microcode for IBM DS8870B Epic array located at 1830 East Monument Street. | Change Control Event | CHG0031622 – Upgrade the microcode for IBM DS8870B Epic array located at 1830 East Monument Street.CHG0031622 – Upgrade the microcode for IBM DS8870B Epic array located at 1830 East Monument Street.