HGST Travelstar Z7K500 320GB SATA 32MB 0J26053 Data Sheet

Product codes
0J26053
Page of 2
© 2012 HGST, a Western Digital company, 3403 Yerba Buena Road, San Jose, CA 95135 USA. Produced in the United States 9/09, rev. 9/09, 10/09, 11/10, 2/11, 9/12. All rights reserved. 
Travelstar and TrueTrack are trademarks of HGST, a Western Digital company.
The EcoTrac symbol identifies HGST hard drives that deliver on the principles of lower operating costs, safer product disposal and a more sustainable environment.
HGST trademarks are intended and authorized for use only in countries and jurisdictions in which HGST has obtained the rights to use, market and advertise the brand. The Travelstar trademark is 
authorized for use in the Americas, EMEA, and the following Asia-Pacific countries and jurisdictions: Australia, Hong Kong, Japan, New Zealand, South Korea and Taiwan. Contact HGST for  
additional information. HGST shall not be liable to third parties for unauthorized use of this document or unauthorized use of its trademarks. 
References in this publication to HGST’s products, programs, or services do not imply that HGST intends to make these available in all countries in which it operates. 
Product specifications provided are sample specifications and do not constitute a warranty. Information is true as of the date of publication and is subject to change. Actual specifications for 
unique part numbers may vary. 
Please visit the Support section of our website, www.hgst.com/support, for additional information on product specifications. Photographs may show design models.
DSTS725010EN-06
HGST Quality and Service 
HGST Travelstar hard disk drives are designed
to the highest quality standards and contain
field-proven components. HGST provides
worldwide technical support and integration
services to enable global customers to bring
their products to market quickly.
How to read the Travelstar model number
HTS725050A9A364 = 500GB, SATA 3Gb/s
H  = HGST
T  = Travelstar
S  =  Standard (vs E for Enhanced Availability)
72  =  7200 RPM
50  =  Full capacity — 500GB
50  =  Capacity this model, 50 = 500GB
 
  (32 = 320GB, 25 = 250GB,  
 
  16 = 160GB, 12 = 120GB)
A  =  Generation code
9  =  9.5mm z-height
A3  =  Interface, SATA 3Gb/s
6  =  16MB cache 
4  =  No encryption (0 = No BDE hardware,  
 
  1 = Bulk data encryption,  
 
  5 = TCG Opal Encryption)
Information and Technical Support
www.hgst.com (Main Web site)
www.hgst.com/partners (Partner Web site)
North America
support_usa@hgst.com
Toll free: 1 888 426-5214, Direct: 1 408 717-8087
Asia Pacific
support_ap@hgst.com / 65 6840 9595
EMEA and UK
support_uk@hgst.com / 44 20 7133 0032
Germany
support_uk@hgst.com / 49 6929 993601
Program Support
Partners First Program
channelpartners@hgst.com
Specifications
Models
HTS725050A9A364
HTS725050A9A361 
HTS725032A9A364
HTS725032A9A361 
HTS725025A9A364
HTS725025A9A361
HTS725016A9A364
HTS725016A9A361 
HTS725012A9A364
HTS725012A9A361
HTE725050A9A364 
HTE725032A9A364 
HTE725025A9A364 
HTE725016A9A364
Configuration
Interface 
SATA 3Gb/s
f
Capacity (GB)
1
500 / 320 / 250 / 160 / 120
500 / 320 / 250 / 160
Sector size (bytes)
512
f
Recording zones
24
f
Aerial density (Gbit/sq.in, max)
370
f
Performance
Data buffer (MB)
2
16
f
Rotational speed (RPM) 
7200
f
Latency average (ms)
4.2
f
Media transfer rate (Mbits/s, max)
1245
f
Interface transfer rate (MB/s)
300
f
Seek time   
   Average (typical) ms (read)
3
12
f
   Track to track (typical) ms (read)
1
f
   Full stroke (typical) ms (read)
20
f
Reliability
Load/Unload cycle 
600,000
f
Power on hours (POH) per month 
N/A
730
Availability
4
 
N/A
24x7
Power
Requirement 
+5VDC (+-5%)
f
Dissipation
   Startup (W, peak, max)
 
5.5
 
f
   Seek (W, average) 
2.0
f
   Read/Write (W, average)
1.8
f
   Performance idle (W, average)
1.7
Idle (Avg.) 
   Active idle (W, average)
1.0
N/A
   Low power idle (W, average)
0.7
N/A
   Standby (W, average)
0.2
f
   Sleep (W)
0.1
f
Physical size
Height (mm, max) 
9.5
f
Dimensions (width x depth, mm) 
70 x 100
f
Weight (g, max) 
115 / 95
f
Environmental (operating)
Shock (half-sine wave) 
400G/2ms, 225G/1ms
f
Ambient temperature
0° to 60° C
f
Environmental (non-operating)
Shock (half-sine wave) 
1000G/1 ms
f
Ambient temperature 
-40° to 65° C
f
Acoustics (A-weighted sound power)
Idle (Bels, typical)
2.5
f
Seek (Bels, typical) 
2.8
f
Travelstar
 
7K500
Standard Models
EA Models
1
   
One GB is equal to one billion bytes when 
referring to hard drive capacity. Accessible 
capacity will vary depending on the operating 
environment and formatting.
2
 Upper 830KB out of 16MB used for firmware
3
 Excludes command overhead
4
 Designed for low duty cycle, non mission-
critical applications in PC, nearline and 
consumer electronics environments, which 
vary application to application