Hitachi Travelstar Z7K320 0A78741 HTS723216A7A364 160GB 7.2K 2.5" SATA Hard Drive

Hitachi Part #/MPN: 0A78741

DiscTech Item #: HIT-0A78741-BN-3Y

  • Low Stock:Call for ETA
    Stock Levels

    This item is currently (nearly) out of stock. It may be possible to arrange fast shipment. If you need it urgently call us. Otherwise, it usually ships within 1 week.


Capacity: 160GB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 2.5inx7mm Fits All laptops

Sector Size: 512 / 512e

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 16MB

Hitachi Travelstar Z7K320 0A78741 HTS723216A7A364 160GB 7.2K 2.5" SATA Hard Drive - Brand New

High-performance, quiet HDD solution for mobile applications
Travelstar™ Z7K320 is the industry's first 7200 RPM, 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 5400 RPM models of the same capacity. Along with continued focus on superior shock protection and low-power consumption, Hitachi delivers best-of-breed acoustics. Hitachi 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 Hitachi representative.


This drive is compatible with any laptop/computer that uses 2.5" SATA hard drives.

Series Overview HTS723216A7A364
InterfaceSATA 3Gb/s
Capacity (GB)


Sector size (bytes)


Recording zones


Areal density (Gbit/ max)


Data buffer (MB) 16
Rotational speed (RPM) 7200
Latency average (ms) 4.2
Media transfer rate (Mbits/sec, max) 1334
Interface transfer Rate (MB/sec, max) 300
Seek time Average (typical) ms (read) 13
Seek time Track to track (typical) ms (read) 1
Seek time Full stroke (typical) ms (read) 25
Load / unload cycle 600,000
Power on hours (POH) per month N/A
Requirement+5 VDC (+ -5%)
Dissipation Startup (W, peak, max.) 5.5
Seek (W, avg.) 2.1
Read / Write (W, avg.) 1.8
Idle (avg.) 1.7
Active idel (W, avg.)


Low power idle (W, avg.) 0.8
Standby (W, avg.) 0.2
Sleep (W) 0.1
Physical size
z-height (mm) 7
Dimensions (width x depth, mm) 70 x 100
Weight (g, max) 95
Environmental (Operating)
Shock (half-sine wave) 400G/2ms, 225G/1ms
Ambient temperature 0 to 60o C
Environmental (Non-Operating)
Shock (half-sine wave) 1000G/1ms
Ambient temperature -40 to 65o C
Acoustics (A-weighted sound power)
Idle (Bels, typical)2.3
Seek (Bels, typical) 2.4

Click here to view the manufacturer's item description/brochure

ROHS Compliant

Alternate MPNs: HTS723216A7A364

Weight: 0.5 lb

Warranty: 3 Year Manufacturer

Brand New

Condition Levels Explained

The product is brand new.

3 Year Manufacturer Warranty

Product Warranties Explained

The product has a manufacturer warranty for the time period specified.