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The miniature USB-disk drive with HDD

Evgenie Rudometov

rudometov@rudometov.com

Alternatively to traditional transportable USB-disk drives c 2,5 ”HDDможет to appear USB 2.0 Pocket Hard Drive ST650211USB companies Seagate, created on the basis of an one-inch hard disk

Popularity of transportable solutions has demanded miniaturization of the majority of accessories. Are not deprived by attention of designers and hard disk drives (HDD), being one of the major units of modern multimedia systems. Perfection of appropriate processing techniques and a construction was provided with high values of density of an information storage and dependability of operation HDD. As a result in the computer market there were extremely compact transportable arrangements rather a high capacity. As their basis miniature hard disk drives of a form factor of 1 inch with speed of rotation of a spindle of 3600 rpm have served . These products rather in mass quantity began to be released recently by the industry for the markets of consumer electronics and computers, including compact transportable disk drives. They are hooked up by means of serial interfaces, the leading position among which occupies USB 2.0.

One of such products is transportable disk drive USB 2.0 Pocket Hard Drive. This arrangement, is hooked up by means of interface USB  2.0 (a transfer rate — to 480 Mbit/c). The given arrangement having technical name ST650211USB, the known manufacturer of hard disk drives — company Seagate Technology LLC (further simply Seagate) has released on the market  .

Appearance of disk drive USB 2.0 Pocket Hard Drive is presented in a Fig. 1.

Fig. 1. Disk drive Seagate USB 2.0 Pocket Hard Drive

Disk drive Seagate USB 2.0 Pocket Hard Drive represents the arrangement fulfilled in shape spljusnutogo of the cylinder in which the 1-inch disk drive of ST1 set and an appropriate electronic stuffing is concluded.

The USB-cable is built in a disk drive construction with the appropriate plug with which help hooking up of the given arrangement to USB-sockets of desktop or transportable computers is provided. The given cable, which length makes about 15 sm, is allocated in a rim of an internal disk. At rotation of the given disk counter-clockwise the cable is coiled, on hour — is unwound.

In the central part of disk drive Seagate USB 2.0 Pocket Hard Drive, under a transparent, plastic window, the bright light-emitting diode, lighting up is allocated by bright, dark blue colour at call to the given arrangement.

As basis of disk drive SeagateUSB  2.0 Pocket Hard Drive with index ST650211USB the one-inch disk drive of Seagate corporation in size of 5 Gbytes (for 1 Gbyte at instructions of size of disk drives their manufacturers accept for a long time already 1 000 000 000 value  byte) has served     . Key parametres of disk drive Seagate USB 2.0 Pocket Hard Drive models ST650211US are resulted in Table 1.

Table 1. Key parametres of disk drive Seagate USB  2.0 PocketHardDriveмодели ST650211USB

Size, a Gbyte

5,0

Speed of rotation of disks, rpm

3600

Size of the internal cache memory, Mb

2

The interface

USB 2.0, compatibility USB 1.1

The sizes, mm

18,0 h 76,0

Power supplies

Through USB

Weight, g

62,4

Acoustic noise, db

22

Band of an operating temperature, With

0-40

Operating systems

Win XP/2000/ME, Win 98SE,
Mac OS 9.2.2 (or above)

The arrangement does not demand driver installation, is compatible to all widespread operating systems and provides a data transfer high speed.

High dependability SeagateUSB  2.0 Pocket Hard Drive is provided by a package design, and also firm processing techniques G-Force and RunOn, realised in miniature 1-inch HDD companies Seagate. As a result the arrangement steadily works at vibrations and pushes. Moreover, it soaks considerable shock loads — to 2000 g in a non-working state.

Rise of consumer properties SeagateUSB  2.0 Pocket Hard Drive is promoted by a set of the software delivered with it (ON). Into its structure enter a number of useful utilities, including information protection frames, hranimoj on HDD the given transportable disk drive.

In conclusion of the given short browse of disk drive Seagate USB 2.0 Pocket Hard Drive ST650211USB some the numerical estimations received in the course of testing of the given arrangement.

As a computer platform compact notebook Fujitsu Siemens LIFEBOOK P7010 used.

At hooking up transportable disk drive Seagate USB 2.0 Pocket Hard Drive was defined by the operating system as arrangement SEAGATEST650211USB USB Device that is presented in a Fig. 2. The screenshot of a window of "Property" is resulted in a Fig. 3.

Fig. 2. A menu fragment the Manager of arrangements after hooking up to a notebook of disk drive Seagate USB 2.0 Pocket Hard Drive

Fig. 3. A fragment of the menu of "Property"

In a Fig. 4 results of testing Seagate USB 2.0 Pocket Hard Drive ST650211USB are resulted.

Fig. 4. Results of testing Seagate USB 2.0 Pocket Hard Drive ST650211USB

As follows from results of the led testing, compact transportable disk drive Seagate USB 2.0 Pocket Hard Drive ST650211USB possesses quite good high-speed parametres. Values of these parametres quite often exceeds many models of flash-disk drives to which the given arrangement competes. It allows to recommend disk drive Seagate USB 2.0 Pocket Hard Drive ST650211USB as compact and an effective remedy of carrying over and storage of programs and data.

In conclusion of the given browse it is necessary to mark, that according to recently published announcements the bar 1-inch HDD companies Seagate is added by products of 8 and 12 Gbytes. The extension of the specified bar at the expense of appearance of new models allows to calculate and for increase in the set of transportable disk drives Seagate USB 2.0 Pocket Hard Drive.

Transportable disk drive Seagate USB 2.0 Pocket Hard Drive ST650211USB has been given on testing by company EASTSIDEConsulting


Article is published in log Magic of the PC.

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