Hitachi Travelstar Z7K320 - 320GB 7200RPM SATA II 3Gb/s 16MB Cache 2.5" 7mm Laptop Hard Drive - HTS723232A7A364


Warranty1 Year Warranty
AvailabilityYes - Ships in 1 to 2 Days
ManufacturerHGST Hitachi Global Storage Technology
SeriesHitachi Travelstar Z7K320
UPC Code829686001688

Product Specs

Product Specs
Capacity320 GB
Spindle Speed7200 RPM Fluid Dynamic (FDB) Motor
Cache Buffer16 MB Intelligent Caching
Advanced FormatNo - 512 Sector Size (Bytes)
Form Factor2.5 Inch Internal Hard Drive
InterfaceSATA II 3Gb/sec (Generation 2)
Interface Speed3Gb/sec - Data Transfer Rate (max) Buffer to Host
Data Transfer Rateup to 120MB/sec Host to/from Drive (Sustained)
Interface ConnectorSATA (7-Pin Signal and 15-Pin Power Connector)
Recording TechnologyPerpendicular Tunneling Magnetoresistive Recording (TMR) Technology
Life Expectancy20,000 Power on Hours
Workload Rating< 55 TB/yr (Workload Rate Limit) / 600,000 (Load/Unload Cycles)
Shock ResistanceOperating: 400Gs / 2ms - Non Operating: 1000Gs / 1ms (half sine wave)
EncryptionNo - Standard Model
Rohs CompliantYes
Dimensions(L x W x H) 100.5mm x 70.0mm x 7.0mm
Part Number0A78743
ClassificationHigh Performance Drives

Key Features

  • Capacities up to 320GB
  • 7200RPM Rotational Speed Motor
  • Enhanced Adaptive Battery Life Extender (ABLE) Technology
  • Read Multiple and Write Multiple Command Support
  • Intelligent Disk Caching Technology
  • Dual Stage Actuator (DSA) Technology
  • Embedded Servo Actuator Technology
  • TrueTrack Technology
  • Perpendicular Tunneling Magnetoresistive Recording (TMR) Technology
  • 600,000 Load/Unload Cycles for Data Integrity
  • Native Command Queuing (NCQ) Technology
  • Full-track Multiple-Sector Transfer Capability
  • State-of-the-Art Cache and On-the-Fly Error-Correction Algorithms
  • Thermal Fly Height Control (TFC) Technology
  • Enhanced Error Correction Code (ECC) Technology
  • Staggered Spin-up Technology
  • Multi Zone Recording Technology
  • Fluid Dynamic Bearing (FDB) Motors
  • SED TCG OPAL Encryption Models

Hitachi HGST Travelstar Z7K320 Hard Drives

High-Performance, Quiet HDD Solution For Mobile Applications

Travelstar Z7K320 is the industry’s first 7200RPM, 7mm, 2.5-inch hard drive with capacities ranging from 160GB to 320GB. The 320GB per platter one-disk models are designed as a direct replacement for standard 9.5mm HDDs, for use in notebook PCs, external storage and compact systems. The Z7K320 offers design flexibility to accommodate new thinner and more robust devices/systems and delivers up to 18% better application performance than 5400RPM models of the same capacity. Along with continued focus on superior shock protection and low power consumption, HGST delivers best-of-breed acoustics. HGST offers optional hard-drive-level encryption for increased data security and models with enhanced availability to deliver high-performance storage for non-stop environments. Travelstar Z7K320 provides the right balance of performance and capacity to meet the multi-tasking needs of commercial and consumer users on the go.

Data Security Option

Travelstar Z7K320 is the fourth generation to feature optional Bulk Data Encryption (BDE) for hard-drive-level data security. With BDE, the data is scrambled using a key as it is written to the disk, then descrambled with the key as it is retrieved, giving users the highest level of data protection available. It also speeds and simplifies the drive re-deployment process. By deleting the encryption key, the data on the drive is rendered unreadable, thereby eliminating the need for time consuming data overwrite. For information about the self encrypting drives designed to the Trusted Computing Group (TCG) Opal Storage Security specification, please contact your HGST representative.

Enhanced Availability (EA)—for 24x7 Access to Data

HGST provides enhanced-availability models of the Travelstar Z7K320 that deliver 24x7 access to information for data intensive applications requiring round-the-clock operation. The new, slimmer profile provides for additional cooling, especially important in dense blade server designs. The Z7K320 provides high capacity, performance and durability on a proven platform for quality and reliability. EA models support the stringent demands of “always-on” applications in lower-transaction environments.


  • New 7mm z-height for greater design flexibility
  • 7200 RPM high-performance HDD
  • Up to 320GB of capacity
  • Best-of-breed acoustics
  • Low power consumption
  • Halogen-free for eco-friendly footprint
  • Self-encrypting models for data security
  • Enhanced-availability (EA) models for applications needing around-the-clock access in lower transaction environments.


  • Notebooks
  • Laptops
  • Ultra-Portable PCs
  • Compact Desktop PCs
  • External Storage
  • Gaming PCs
  • Compact Video Devices
  • Blade Servers (EA)
  • Network Routers (EA)
  • Video Surveillance (EA)
  • Compact RAID Systems (EA)
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