0001181431-08-053111 4 1 20080911 20080915 20080915 Crosby Christopher James JR 0001335788 4 34 001-32336 081071526 214-231-2491 7408 IVANHOE DRIVE PLANO TX 75024 Digital Realty Trust, Inc. 0001297996 6798 000000000 MD 1231 560 MISSION STREET SUITE 2900 SAN FRANCISCO CA 94105 (415)738-6500 560 MISSION STREET SUITE 2900 SAN FRANCISCO CA 94105 4 1 rrd218556.xml FORM 4 FOR CHRISTOPHER CROSBY (CONVERT, REDEEM & HOLD)