6 
SPECIFICATIONS –MK8026GAX (HDD2191)  
General 
Model MK8026GAX (HDD2191) 
Interface ATA-2/3/4/5/6 
Motor  Fluid Dynamic Bearing (FDB) 
Functionality 
Formatted Capacity  80.012GB* 
Rotational Speed  5,400rpm 
Avg. Rotational Latency  5.55/ms 
Spin-up Time  4sec (typical) 
Buffer 16MB 
Seek Time (Average)   12  
Internal Transfer Rate  233 ~ 446 Mbits/sec (max) 
Host Transfer Rate   100Mbytes/sec  
*Toshiba defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes. 
Internal Drive Characteristics 
Number of Disks  2 
Number of Read/Write Heads  4 
Track Density (TPI)  88k 
User Data Cylinders  54,000 
Logical Cylinders  16,383 
Logical Heads  16 
Logical Sectors/track  63 
Bytes per Sector  512 
Logical Blocks (LBA)  156,301,488 
Reliability 
Preventative maintenance  None 
Nonrecoverable read errors  1 error per 10
13
 bits read 
Electrical 
Voltage 5V 5% 
Power Consumption 
Start 5.0W typ 
Seek  2.9W  typ 
Read/Write  2.5W  typ 
Sleep  0.1W  typ 
Energy Consumption Efficiency  0.021W/GB avg  
Shock 
Operating 1,960m/s
2
 (200G)(2msec) 
Non-Operating 7,840m/s
2
 (800G)(1msec)