Travelstar 5K1000 is a 5400 RPM 500 G Bplatter 25-inch hard drive available in 640GB 750GB & 1TB models This standard 95mm two-disk design intended for use in notebook PCs external storage gaming consoles & other mobile applications leverages Advanced Format which increases the physical sector size on hard drives from 512 bytes to 4096 (4K) bytes to increase drive capacities & improve error correction capabilities Consult the Hitachi Advanced Format Technology Brief for more information on using these hard drives The Travelstar 5K1000 is the first 1TB 25-inch HDD with a 6 Gbs SATA interface & delivers best-of-breed 5400 RPM performance in PCMark 7 & PCMark Vantage testing The 5K1000 continues to demonstrate Hitachi ecological leadership with its halogen-free design & power-efficient operation & carries the Eco Trac classification Travelstar 5K1000 delivers the highest mobile capacity with excellent performance to meet the needs of consumers & commercial users in an eco-friendly rugged design Key features Interface SATA 6 Gbs Capacity (GB) 1TB 750 640 Sector size (variable Bytessector) 512e Recording zones 30 Max Areal Density (Gbitssq in) 694 Performance Data Buffer (MB) 8 Rotational Speed (RPM) 5400 Latency Average (ms) 55 Media transfer rate (Mbitssec max) 998 Interface transfer rate (MBsec max) 600 Seek Time (read ms typical) 12 Seek time Track to track (typical) ms (read) 1 Seek time Full Stroke (typical) ms (read) 20 Reliability Power on hours (POH) per month NALoad Unload Cycles 600000 Availability (hrsday x dayswk) 24x 7 Acoustics Idle (Bels) 24 Operational (Bels typical) 26 Power Requirement 5 VDC (-5) Startup (W peak max) 45 Read Write (W avg) 16 Low power idle (W avg) 05 Standby (W avg) 02 Seek (W avg) 18 Active Idle (W avg) 08 Performance Idle (W avg) 15 Sleep (W) 01 Physical size Z-Height (mm) 95 Dimensions (width x depth mm) 70x 100 Weight (g max) 102 Environmental (operating) Ambient temperature 0 to 60°CShock (half-sine wave) 400G2ms 225G1ms Environmental (non-operating) Ambient temperature -40 to 65°CShock (half-sine wave) 1000G1ms