Quantum Audio DAT72 Скачать руководство пользователя

Страница: 61 / 62

Operation

cartridge guidelines 41

cleaning tape heads 45

handling cartridges 41

initializing a blank cartridge 42

loading a cartridge 42

unloading a cartridge 43

using appropriate media 40

write-protecting a DDS cartridge 44

Parity checking

external drives 35

internal drives 22

Parts, missing or damaged 49
Power cable connection

external drives 38

internal drives 30

Power-On LED 46

Power-On Self-Test

external drives 36

fails 51

internal drives 24

Quick start

external drives 16

internal drives 15

Regional services technical support 56

Registering tape drive 32

SCSI cable connection

external drives 37

internal drives 29

narrow SCSI 29

wide SCSI 29

SCSI ID

external drives 35

internal drives 21

problems 50

SCSI termination

external drives 38

internal drives 30

problems 50

SCSI Wide/Narrow configuration

internal drives 25

Switch settings for internal drives 21

Tape cartridges

appropriate 40

handling 41

initializing 42

loading 42

unloading 43

write-protecting 44

Tape drive

applications 13

capacity 13

components 14

features 12

registering 32

transfer rates 13

Tape drives

covered in this User’s Guide 11

registering 39

Tape heads, cleaning 45

TapeAlert feature 45
Technical support

e-mail 55

regional services 56

world-wide services 55

World-wide Web 55

Technical support services

Africa and Middle East 57

Americas 56

Europe 57

Terminating SCSI for external drives 38

Terminating SCSI for internal drives 30

Termination problems 50
Terminator power

internal drives 22

Tools

internal drives 19

Transfer rates 13
Troubleshooting

backup program does not recognize drive 52

computer does not boot 51

computer does not recognize drive 51

Drive does not work 50

Содержание DAT72

Страница 1: ...DDS 4 DAT 72 DDS 4 DAT 72 Online Online User s Guide User s Guide ...

Страница 2: ... of dangerous voltage inside the product that might cause harm or electric shock Caution Risk of electric shock Do not open To reduce the risk of electric shock do not remove the cover or back No user serviceable parts are inside Refer servicing to qualified service personnel Heed warnings All warnings on the product and in the operating instructions should be adhered to Follow instructions All op...

Страница 3: ...by turning the equipment on and off you are encouraged to try to correct the interference by one or more of the following measures Reorient the receiving antenna Relocate the computer with respect to the receiver Move the computer into a different outlet so that the computer and receiver are on different branch cir cuits If necessary you should consult the dealer or an experienced radio television...

Страница 4: ...4 ...

Страница 5: ...uick Start Installation 14 Tape Drive Components 14 Installing the Internal Tape Drive 15 Installing the External Tape Drive 16 Chapter 3 Installing internal tape drives 17 Unpacking 17 What Else You Need 18 Avoiding Electrostatic Damage 18 Installation Summary 18 Collecting the Necessary Tools 19 Reviewing Drive Default Settings 19 SCSI ID 21 Parity Checking 22 ...

Страница 6: ...ng to a Wide SCSI Connector 29 Connecting to a Narrow SCSI Connector 29 Checking SCSI Termination 30 Connecting a Power Cable 30 Completing Your Installation 31 Registering Your Tape Drive 32 Chapter 4 Installing external tape drives 33 Unpacking 33 What Else You Need 33 Installation Summary 34 Reviewing Drive Default Settings 34 SCSI ID 35 Parity Checking 35 Data Compression 35 Media Recognition ...

Страница 7: ...a DDS Cartridge 44 Cleaning the Tape Heads 45 Chapter 6 Understanding the Drive LEDs 46 Front Panel LEDs 46 LED Summary 47 Clean LED 47 Media LED 48 Drive LED 48 Chapter 7 Troubleshooting 49 Missing or Damaged Parts 49 SCSI ID Problems 50 SCSI Termination Problems 50 Mounting Hardware Problems 50 Drive Does Not Work 50 Power On Self Test Fails 51 Computer Does Not Boot 51 Computer Does Not Recogni...

Страница 8: ... World wide Web 55 E mail Technical Support 55 Regional Services 56 Phone Technical Support 56 Technical Support FAX 56 Support Services in the Americas 56 Telephone Support 56 Technical Support FAX US and International 56 SeaTDD 56 Support Services in Europe 57 Support Services for Africa and the Middle East 57 Support Services in Asia and the Western Pacific 58 ...

Страница 9: ...nal Tape Drive in a 5 25 inch Installation 28 FIGURE 8 SCSI Interface Connector on the Internal Tape Drive 29 FIGURE 9 Two SCSI Termination Examples for the Internal Tape Drives 30 FIGURE 10 Power Connector on the Internal Tape Drive 31 FIGURE 11 Back Panel of the External Tape Drive 35 FIGURE 12 Two SCSI Termination Examples for the External Tape Drives 38 FIGURE 16 Loading a Cartridge 42 FIGURE ...

Страница 10: ...Host Operating Systems and Corresponding Switch Settings 24 TABLE 5 External Tape Drive Default Settings 34 TABLE 7 Cartridge Guidelines and Pitfalls 41 TABLE 6 Matching Drives with the Media They Support 41 TABLE 8 LED Quick Summary 47 TABLE 9 Clean LED 47 TABLE 10 Media LED 48 TABLE 11 Drive LED 48 TABLE 12 European Toll Free Numbers 57 TABLE 13 Asia and Western Pacific Numbers 58 ...

Страница 11: ...ing edge technology Designed for computer environments that require high performance high capacity data storage the DDS 4 and DAT 72 drives are based on a 3 5 inch mechanism and available as external and inter nal tape drives see Figure 1 on page 11 The drives combine established Digital Audio Tape DAT technology high density recording and hardware data compression capabilities with Certance s pro...

Страница 12: ...data storage capacities see Table 1 on page 13 High speed transfer rates for fast backups see Table 1 on page 13 Advanced onboard DDS DC hardware using Lempel Ziv DCLZ data compression doubling the drive s uncompressed capacity e g a 20 GB uncompressed drive can be 40 GB with compression See Table 1 on page 13 High performance SCSI burst transfer rates Three levels of error correction code ECC and...

Страница 13: ...ter 2 provide quick start instructions for getting the drives up and running in the shortest possible time Chapter 3 describes how to install internal DDS 4 and DAT 72 drives Chapter 4 describes how to install the external tape drives Chapter 5 describes how to operate the drives Chapter 6 describes the front panel LEDs on the drives Chapter 7 provides troubleshooting procedures you can follow in ...

Страница 14: ...g the Internal Tape Drive on page 15 Installing the External Tape Drive on page 16 NOTE If you prefer more detailed instructions see Chapter 3 for internal drive installation instructions or Chapter 4 for external drive installation instructions Tape Drive Components The following describes the major components of the tape drives FIGURE 2 Front Panel Components For more information on LEDs and the...

Страница 15: ... only Enabled Power On Self Test Enabled Host Operating System Windows 98 Me XP NT 2000 2003 Server SCSI Interface Compatibility DDS 4 drives only Wide SCSI Vendor ID SEAGATE DAT See Reviewing Drive Default Settings on page 19 6 Turn off your computer remove its covers and power cable and select a mounting bay for the drive Depending on your drive select a 3 5 inch or 5 25 inch bay See Accessing t...

Страница 16: ...ing Enabled Terminator Power Supplied to the SCSI bus Data Compression Enabled Media Recognition DDS 4 drives only Enabled Power On Self Test Enabled Host Operating System Windows 98 Me XP NT 2000 2003 Server SCSI Interface Compatibility DDS 4 drives only Wide SCSI Vendor ID SEAGATE DAT See Reviewing Drive Default Settings on page 34 4 Connect a SCSI interface cable to the drive See Connecting a S...

Страница 17: ...e contents of your drive package inspect the shipping containers for damage If you spot damage to the container notify your carrier immediately When you unpack the package compare the items received with those on the packing list If any item is missing or damaged please contact your place of purchase immediately NOTE internal tape drives come in two mounting configurations one for 3 5 inch half he...

Страница 18: ...strap or observe similar ESD precautions when work ing with the drive Be sure the wrist strap makes good skin contact Do not remove the wrist strap until you finish working with the drive Avoid contact between the drive other equipment and clothing The wrist strap only protects the equipment from ESD voltages on the body ESD voltages on clothing can still cause damage When the drive is not being u...

Страница 19: ...screwdriver if your computer uses flathead screws Torx screwdriver if your computer uses torx screws Computer documentation which you can refer to during the installation Reviewing Drive Default Settings Your internal tape drive comes with various default settings These settings are configured using jumpers and switches The jumpers are located on the back of the drive between the SCSI interface an...

Страница 20: ...elf Test diagnostic Enabled Switch 4 page 24 Host operating system Microsoft Windows 98 Me XP NT 2000 2003 Server Switches 5 through 8 page 24 SCSI interface compatibility DDS 4 drives only Wide SCSI LVD and single ended Switch 9 page 25 Vendor ID SEAGATE DAT Switch 10 page 25 SCSI ID 0 SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI ID 5 SCSI ID 6 SCSI ID 7 SCSI ID 8 SCSI ID 9 SCSI ID 10 SCSI ID 11 ...

Страница 21: ... 4 5 6 7 8 Default Setting SCSI ID 6 TABLE 3 SCSI IDs and Corresponding Jumper Settings SCSI ID Jumpers 1 2 3 4 5 6 7 8 0 Open Open Open Open 1 Shunted Open Open Open 2 Open Shunted Open Open 3 Shunted Shunted Open Open 4 Open Open Shunted Open 5 Shunted Open Shunted Open 6 default Open Shunted Shunted Open 7 Shunted Shunted Shunted Open 8 Open Open Open Shunted 9 Shunted Open Open Shunted 10 Open...

Страница 22: ...s disabled on the internal tape drive To enable terminator power place a jumper across pins 11 and 12 NOTE If you enable terminator power be careful not to short the TERMPWR signal to ground for example by attaching the SCSI cable upside down If a short occurs terminator power to the bus is interrupted After the short is removed a fuse in the drive is automatically reset restoring terminator power...

Страница 23: ...as structured database files or graphics files are compressed most efficiently often at a ratio of 2 1 or more Data with little redundancy such as executable programs are compressed the least Media Recognition System DDS 4 Drives Only Using non DDS media may appear to give satisfactory results but the inferior specifications of such media can cause data integrity problems To avoid these problems t...

Страница 24: ...lement is available on your Tape Resource CD and at http support certance com Table 4 shows the supported operating systems and their corresponding switch settings Settings Switch 4 ON Drive performs Power On Self Test default Switch 4 OFF Drive does not perform Power On Self Test Switches 5 6 7 8 Default Setting Microsoft Windows 98 Me XP NT 2000 2003 Server TABLE 4 Host Operating Systems and Cor...

Страница 25: ...ive to return the vendor ID ARCHIVE Python Independent software vendors can use this vendor ID to provide software compatibility with previous Seagate DDS tape drives Recording Drive Information After you review and if necessary change the drive s default settings record the drive information That way you can reference this information in the future without having to gain access to the drive insid...

Страница 26: ...ller panel remove it according to the instructions in your computer s documentation Place the screws aside You will need them to secure the drive in the bay 6 If the computer does not have a SCSI host adapter you will need to purchase and install a SCSI host adapter Mounting the Internal Tape Drive An internal tape drive without mounting brackets can be installed into a 3 5 inch drive bay An inter...

Страница 27: ...eed to Connecting a SCSI Cable on page 29 FIGURE 5 Mounting an Internal Tape Drive FIGURE 6 Mounting Holes for the Internal Tape Drive in a 3 5 inch Installation 41 3 mm 1 63 in 101 6 mm 4 00 in 101 6 mm 4 00 in 94 0 mm 3 70 in 3 8 mm 0 15 in 13 0 mm 0 51 in 2 places 5 0 mm 0 196 in 2 places 90 0 mm 3 54 in 2 places 70 0 mm 2 75 in 6 0 mm 0 24 in 31 0 mm 1 22 in 146 0 mm 5 75 in 41 2 mm 1 62 in 60...

Страница 28: ...y 3 Align the drive s front panel with the front panel of the computer 4 Secure the drive in the mounting bay using four screws on the bottom and six screws on each side of the drive see Figure 7 on page 28 5 Proceed to Connecting a SCSI Cable on page 29 FIGURE 7 Mounting Holes for the Internal Tape Drive in a 5 25 inch Installation 41 3 mm 1 63 in 31 5 mm 1 24 in 146 mm 5 75 in 174 6 mm 6 87 in 7...

Страница 29: ...ur LVD connection Do not connect the tape drive to a disk RAID controller disk RAID controllers are not supported If you install an adapter we recommend you purchase a SCSI LVD controller kit that includes the SCSI cable and terminator Connecting to a Wide SCSI Connector If your computer has a 68 pin wide SCSI connector 1 Attach the interface cable from the SCSI host adapter to the 68 pin SCSI int...

Страница 30: ...CSI Terminator and attaches to the cable FIGURE 9 Two SCSI Termination Examples for the Internal Tape Drives Connecting a Power Cable To connect a power cable to the internal tape drive 1 Connect a spare 4 pin power cable from the computer s internal power supply to the power connector on the back of the internal tape drive Figure 10 on page 31 shows the location of the power connector on the inte...

Страница 31: ...ram The documentation that came with your software should describe this procedure 6 Gently insert a tape cartridge into the internal tape drive s slot see Loading a Cartridge on page 42 Slide the cartridge into the slot until the drive accepts the cartridge and loads it A brief delay occurs while the drive identifies the cartridge type and state and moves the tape to the data area Then the green M...

Страница 32: ...our drive as well as other product service and support information For your convenience you can register your drive either through our Web site or by fax If you have an Internet connection please visit www certance com and select Product Registration from the Products menu If you do not have an Internet connection complete the Registration Card included with your package and either mail or fax it ...

Страница 33: ...ckage inspect the shipping containers for damage If you spot damage to the container notify your carrier immediately When you unpack the package compare the items received with those on the packing list If any item is missing or damaged please contact your place of purchase immediately What Else You Need In addition to the contents included with your external tape drive you need the following item...

Страница 34: ... Installation See Completing Your Installation on page 39 Reviewing Drive Default Settings Your external tape drive comes with various default settings You may need to change these settings to suit your requirements Review the default settings in Table 5 on page 34 to determine whether they suit your requirements or need to be changed Note These settings can be changed by accessing the switches lo...

Страница 35: ...el of the External Tape Drive Parity Checking By default parity checking is enabled on the external tape drive If you disable parity checking the drive still generates a parity bit Data Compression By default data compression is enabled With this setting the external tape drive compresses all data written to tape and decompresses all compressed data read from tape The degree of compres sion varies...

Страница 36: ...he drive Reads from and writes to MRS media Reads from but does not write to non MRS media If you disable MRS the drive reads from and writes to MRS and non MRS media NOTE MRS is not available with external DAT 72 drives Power On Self Test By default the external tape drive responds to SCSI commands only after it successfully completes the Power On Self Test about 5 seconds If you do not want the ...

Страница 37: ...rchase a SCSI LVD controller kit that includes the SCSI cable and terminator Connecting to a Wide SCSI Connector If your computer has a 68 pin wide SCSI connector 1 Turn off your computer 2 Connect the SCSI cable from the SCSI host adapter or from another unterminated SCSI device to either of the two 68 pin SCSI connectors on the back of the external tape drive see Figure 11 on page 35 3 If desire...

Страница 38: ...g a Power Cable To connect a power cable to the external tape drive 1 Connect a power cable to the AC power connector on the back of the external tape drive see Figure 11 on page 35 2 Connect the other end of the power cable to a working AC outlet NOTE Choose an AC outlet that is not controlled by a wall switch which can turn off power to the AC outlet and to the external tape drive External Tape ...

Страница 39: ...e to the data area Then the green Media LED goes ON 6 Use your backup software application to perform a sample backup and verify operation The amber Drive LED goes ON as data is written to and or read from the tape 7 At the end of the operation press the Eject button on the front of the external tape drive to eject the cartridge from the drive see Unloading a Cartridge on page 43 If you encountere...

Страница 40: ...ppropriate Media The Seagate DDS 4 and DAT 72 drives use data grade DDS cartridges which comply with ANSI specifications listed in the 3 81 mm Helical Scan Digital Computer Tape Cartridge for Information Interchange ANSI X3B5 89 156 standard For optimum performance and maximum storage capacity use MRS tape cartridges that correspond to the format supported by your drive see Table 6 on page 41 MRS ...

Страница 41: ...idges gently Do not treat cartridges roughly or drop them Keep cartridges in plastic cases when they are not in use Do not try to clean the tape guides or tape path inside the cartridge Apply just one label to the designated area on the cartridge Affixing more labels can jam the drive Never touch the exposed tape media with your fin gers If your data is important consider reading data off of tapes...

Страница 42: ...n a cartridge is inserted After you insert the cartridge there is a brief delay while the drive identifies the cartridge type and state and moves the tape to the data area Then the Media LED turns ON FIGURE 13 Loading a Cartridge Initializing a Blank Cartridge When you insert a blank cartridge into the drive for the first time the drive takes from 10 to 12 sec onds to determine that the tape is bl...

Страница 43: ... the cartridge see Figure 14 on page 43 The drive automatically flushes the drive buffer to tape rewinds the cartridge updates the system log and ejects the cartridge This may take up to three minutes Do not power down the tape drive or host computer during this time NOTE The backup software may issue a command to the drive that prevents the Eject button from ejecting the tape If the tape does not...

Страница 44: ... the cartridge to the open position see Figure 15 on page 44 To write enable the cartridge slide the write protect tab so the hole is closed see Figure 15 on page 44 CAUTION Write protecting a cartridge does not protect the data on the cartridge from bulk erasure or degaussing Do not bulk erase DDS cartridges otherwise you will lose all of your data on the cartridge and your data will not be recov...

Страница 45: ...ge runs for less than 30 seconds and the Clean LED is flashing the cartridge has expired Replace the cleaning cartridge with a new one and repeat step 1 2 When the cleaning cartridge finishes cleaning the heads the drive ejects the cartridge auto matically 3 Remove the cleaning cartridge from the drive and store the cartridge in a safe place Most cleaning cartridges are good for roughly 30 cleanin...

Страница 46: ...s chapter are Front Panel LEDs on page 46 LED Summary on page 47 Clean LED on page 47 Media LED on page 48 Drive LED on page 48 Front Panel LEDs Figure 16 on page 46 shows an example of the LEDs on the drive front panel of the DDS 4 and DAT 72 drives The external tape drive has the same front panel LEDs plus a green Power On LED FIGURE 16 Front Panel LEDs on Internal Drive external drive is simila...

Страница 47: ...e to clean the drive Drive Amber ON Lit Drive is reading or writing the tape normally Rapid Flashing A hardware fault has occurred TABLE 9 Clean LED LED Status Description ON continuously Drive requires cleaning Use only an approved DDS cleaning cartridge Flashing slowly approximately ON 2 seconds OFF 1 second Tape cartridge in use has exceeded a predefined soft error threshold This signal is a wa...

Страница 48: ... correctly maximum rewrite count exceeded and the write operation failed Clean the drive heads using an approved DDS cleaning cartridge If you reinsert the original data cartridge and the LED continues flashing insert a new data cartridge and retry the operation TABLE 11 Drive LED LED Status Description ON continuously The drive is reading or writing the tape SCSI or tape movement is present Flash...

Страница 49: ...blems on page 50 Mounting Hardware Problems on page 50 Drive Does Not Work on page 50 Power On Self Test Fails on page 51 Computer Does Not Boot on page 51 Computer Does Not Recognize Drive on page 51 Backup Program Does Not Recognize Drive on page 52 Write Error on page 52 Hardware Error on page 52 Missing or Damaged Parts If any of the contents included with your DDS 4 or DAT 72 drive are missin...

Страница 50: ...king SCSI Termination on page 38 The internal DDS 4 and DAT 72 drives do not provide SCSI termination Therefore do not install these drives as the last devices in the SCSI chain If the drive is the only SCSI device attach the drive to the connector which is next to last on the SCSI chain and attach a multi mode terminator to the last connector in the chain For more information see Checking SCSI Te...

Страница 51: ...he problem is with the outlet 3 The power outlet connected to the computer is controlled by a wall switch that is removing power from the outlet Either switch outlets or set the wall switch so that power is applied to the outlet 4 The computer has two SCSI host adapters installed whose resources are conflicting with each other Remove the conflicting device or consult the documentation that came wi...

Страница 52: ...e installed or configured properly Check your drive installation and configuration Write Error If the Media LED is flashing a write error has occurred 1 Use a Seagate qualified DDS cleaning cartridge to clean the tape heads see Cleaning the Tape Heads on page 45 2 Try to run a short backup and verify 3 If the Media LED continues to flash contact the Technical Support department Hardware Error If t...

Страница 53: ... as soon as those technologies become available This appendix describes how to load firmware onto your tape drive Topics in this appendix are Firmware Upgrade Methods on page 53 Using Firmware Cartridges on page 54 Firmware Upgrade Methods You can upgrade your tape drive s firmware two ways Using the diagnostic software provided on your Tape Resource CD or available at http support certance com Th...

Страница 54: ...utomatically recognizes the firmware upgrade cartridge and begins downloading the firmware from the cartridge into DRAM When the firmware has been downloaded into DRAM the drive ejects the firmware upgrade cartridge and the drive LEDs blink in a progressive pattern When the blinking pattern stops the firmware upgrade operation is complete WARNINGS Once the firmware upgrade cartridge is inserted in...

Страница 55: ...Services in the Americas on page 56 Support Services in Europe on page 57 Support Services for Africa and the Middle East on page 57 Support Services in Asia and the Western Pacific on page 58 World wide Services World wide Web A wide variety of technical support services are available on the World Wide Web site located at http support certance com E mail Technical Support You can e mail questions...

Страница 56: ...ted have it handy Technical Support FAX You can FAX questions or comments to technical support specialists Responses are sent during local business hours Support Services in the Americas Telephone Support By dialing telephone support you will be directed to a product specific phone or fax number US customers 1 800 SEAGATE International customers 1 405 936 1400 Technical Support FAX US and Internat...

Страница 57: ...rvices for Africa and the Middle East For presales technical support warranty repair and FAX services in Africa and the Middle East dial our European call center in Amsterdam at 31 20 316 7222 between 8 30 A M to 5 00 P M European central time Monday through Friday or send a FAX to 31 20 653 3513 TABLE 12 European Toll Free Numbers Country Phone SeaFAX Country Phone SeaFAX Austria 0 800 20 12 90 N...

Страница 58: ...available in Australia at 61 2 9756 5170 If your country is not listed in Table 13 on page 58 dial our Asia Pacific headquarters in Singapore at 65 488 7584 during business hours 9 00 A M to 5 00 P M Singapore time TABLE 13 Asia and Western Pacific Numbers Technical Support Phone FAX Australia 61 2 9725 3366 61 2 9725 4052 Hong Kong 852 2368 9918 852 2368 7173 Japan 81 3 5462 2979 Singapore 65 488...

Страница 59: ...2 loading 42 unloading 43 write protecting 44 Clean LED 45 47 Cleaning tape heads 45 Components on front panel 14 Computer does not boot 51 recognize drive 51 D Damage from static electricity 18 Damaged parts 49 DAT 72 applications 13 capacity and transfer rates 13 features 12 LEDs 46 Data compression external drives 35 internal drives 23 DDS cartridge write protecting 44 DDS 4 applications 13 cap...

Страница 60: ...ternal drives 17 Internal drives accessing inside of your computer 26 connecting a power cable 30 connecting a SCSI cable 29 connecting to a narrow SCSI connector 29 connecting to a wide SCSI connector 29 data compression 23 default settings 19 host operating system 24 installation summary 18 installing 17 jumper settings 20 Media Recognition System 23 mounting 26 parity checking 22 Power On Self ...

Страница 61: ...ation external drives 38 internal drives 30 problems 50 SCSI Wide Narrow configuration internal drives 25 Switch settings for internal drives 21 T Tape cartridges appropriate 40 handling 41 initializing 42 loading 42 unloading 43 write protecting 44 Tape drive applications 13 capacity 13 components 14 features 12 registering 32 transfer rates 13 Tape drives covered in this User s Guide 11 register...

Страница 62: ...ms 50 Power On Self Test fails 51 SCSI ID problems 50 SCSI termination problems 50 write error 52 U Unloading a cartridge 43 Unpacking external drives 33 internal drives 17 Upgrading firmware 53 V Vendor ID internal drives 25 W Write error 52 Write protecting a cartridge 44 ...

Результаты поиска

Содержание DAT72

Отзывы:

Похожие инструкции для DAT72

Бренды по названию

Популярные бренды

Quantum Audio DAT72, Онлайн-руководство

Результаты поиска

Содержание DAT72

Отзывы:

Похожие инструкции для DAT72

Бренды по названию

Популярные бренды