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WD Enterprise WDE2170/WDE4360

Advanced Product Features

4079-001045 Rev. B

RELEASED 04-08-97

21

3. A

DVANCED

P

RODUCT

F

EATURES

3.1. Compatibility

Testing

Western Digital performs extensive testing in its Functional Integrity Test Lab (FIT
Lab™). By equipping the FIT Lab with multiple host systems, adapters, operating
systems, and application programs, compatibility is achieved with a broad range of
applications implemented on workstations, servers, multi-user, and array systems.

3.2.

SCSI-3 SPI Compliant

Drive models WDE2170 and WDE4360 conform to the SCSI-3 SPI (SCSI Parallel
Interface) standard. The drives also support the Ultra SCSI performance specification
and are offered in several configurations, such as Ultra Fast (8-bit, 50-pin; up to
20MB/s) and Ultra Fast Wide (16-bit, 68-pin, 80-pin SCA-2; up to 40MB/s) host
transfer rates.

3.3.

Embedded Servo Control

The WD Enterprise drives feature embedded servo technology to generate accurate
position information on every track. An embedded servo system has servo bursts
interspersed with customer data on every track. This provides a tight coupling between
head positioning and customer data – a necessity for good soft error rates. In addition,
embedded servo technology is less susceptible to thermal shifts of the system since
customer data and position information are recorded together on the same track.

3.4.

Read Caching and Pre-Fetch

Read caching allows the drive to maintain data in the cache for quick transfer to the host
when a media access is not required. Pre-fetching takes place after a media access when
the drive reads data into the cache that the firmware determines as likely to be requested
by the host. Refer to the Western Digital SCSI Implementation Guide (document number
4096-001116) for further details.

3.5. Write

Caching

Write caching gives the host the ability to allow the drive to asynchronously write data
to the media while other processes may occur. Refer to the Western Digital SCSI
Implementation Guide (document number 4096-001116) for further details.

3.6.

512 Kilobyte Data Buffer

The entire data buffer is user accessible, enabling powerful data caching capabilities.

3.7. Adaptive

Caching

The drives are equipped with an adaptive caching capability which enables them to
improve performance and throughput based on how the drive is being used. Each drive
determines the environment in which it is being used and optimizes the way it handles
commands and data.

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Содержание WDE2170

Страница 1: ...Western Digital SCSI Hard Drives WD Enterprise WDE2170 WDE4360 CCC A9 Technical Reference Manual ...

Страница 2: ...rights of Western Digital Corporation Western Digital Corporation reserves the right to change specifications at any time without notice Western Digital is a registered trademark WD Enterprise and FIT Lab are trademarks of Western Digital Corporation Other marks may be mentioned herein that belong to other companies Western Digital Corporation 8105 Irvine Center Drive Irvine CA 92618 4079 001045 R...

Страница 3: ...4079 001045 Rev B RELEASED 04 08 97 WD Enterprise WDE2170 WDE4360 CCC A9 Technical Reference Manual ...

Страница 4: ...RELEASED 04 08 97 4079 001045 Rev B ...

Страница 5: ... Bring Up Sequence 13 2 5 Environmental Specifications 14 2 5 1 Shock and Vibration 14 2 5 2 Temperature and Humidity 16 2 5 3 Cooling 16 2 5 4 Atmospheric Pressure 17 2 5 5 Acoustics 17 2 6 Reliability Specifications 20 2 7 Agency Approvals 20 2 7 1 Product Safety 20 2 7 2 Electromagnetic Compatibility EMC 20 3 ADVANCED PRODUCT FEATURES 21 3 1 Compatibility Testing 21 3 2 SCSI 3 SPI Compliant 21 ...

Страница 6: ...TION BLOCK 28 5 1 Physical Characteristics 28 5 2 Pin Designation 28 5 3 Option Block Pin Assignments 29 5 4 SCSI ID Jumper Table 30 6 SCSI CONNECTORS 31 6 1 Power Connectors and Cables 31 6 2 SCSI Physical Interface 31 6 3 50 Pin SCSI Connector 32 6 4 68 Pin SCSI Connector 34 6 5 80 Pin SCA 2 SCSI Connector 36 7 INSTALLATION AND MAINTENANCE 38 7 1 Electrostatic Discharge ESD Protection 38 7 2 Mai...

Страница 7: ...Drive Axis Definition 10 Figure 2 5 WDE2170 12V Current Profile 12 Figure 2 6 WDE4360 12V Current Profile 12 Figure 2 7 Drive Baseplate Thermocouple Location 18 Figure 2 8 PCBA Thermocouple Locations 19 Figure 5 1 Option Block and LED Pin Designation 28 Figure 6 1 50 Pin SCSI Connector and Power Connector Pin Numbers 32 Figure 6 2 68 Pin SCSI Conn Remote Option Conn and Power Conn Pin Numbers 34 F...

Страница 8: ...14 Table 2 11 Temperature and Humidity 16 Table 2 12 Maximum Reliability Operating Temperature Limits 16 Table 2 13 Allowable Altitude Ranges 17 Table 2 14 Sound Power Level 17 Table 2 15 WDE2170 and WDE4360 Reliability Parameters 20 Table 5 1 Option Block Pin Assignments 29 Table 5 2 SCSI ID Jumper Table 30 Table 6 1 50 pin Drive Power Connector and Cable 31 Table 6 2 68 pin Drive Power Connector...

Страница 9: ...compliant and support Ultra Fast and Ultra Fast Wide host transfer rates of up to 40 MB s Advanced read write caching command queuing command reordering seek and rotational Self Monitoring and Reporting Technology S M A R T and SCSI Configure Automatically SCAM are standard features on the Western Digital Enterprise hard drives Western Digital hard drives are designed and manufactured to the highe...

Страница 10: ...tures Media Data Transfer Rate up to 140 Mbits s Average Read Seek Time of 8 ms 4 17 ms Rotational Latency Command Queuing Command Reordering Seek and Rotational Write Read Coalescing Adaptive Caching Algorithm Self Optimizing Buffer Ratios Adaptive Segmented Cache Auto Read Reallocation Auto Write Reallocation ARRE AWRE Adaptive Servo Functions Reliability Features Self Monitoring and Reporting T...

Страница 11: ... to provide maximum protection against damage during transit Units shipped individually require additional protection as provided by the single unit shipping pack Contact your local Western Digital sales office for ordering information Differential SCSI The WD Enterprise drive provides as an option differential SCSI drivers receivers on the 68 pin interface configuration For more details refer to ...

Страница 12: ... 2 5 ms Full Stroke Seek 18 ms Average Latency 4 17 ms Rotational Speed 7200 RPM Data Transfer Rate Media to Buffer Buffer to Host 81 140 Mbits s 40 MB s max Buffer Size1 512 KB 1 MB optional Error Rate Unrecoverable 1 in 1014 bits read Spindle Start Time 30s to ready Spindle Stop Time 20s Contact Start Stop Cycles CSS 2 20 000 1 User can access the entire 512 KB or 1 MB data buffer 2 Must not exc...

Страница 13: ... Data Surfaces 4 8 Number of Heads 4 8 Bytes per Sector3 512 512 Tracks per Inch 6150 6150 Bits per Inch 000 125 ID 125 ID Areal Density 769 Mb in2 769 Mb in2 Total Cylinders 5956 5956 Zones per Surface 20 20 User Sectors per Drive 512 byte 225 OD 133 ID 225 OD 133 ID Recording Method 0 4 4 RLL4 0 4 4 RLL ECC5 144 bit Reed Solomon 144 bit Reed Solomon 1 Western Digital defines a megabyte MB as 1 0...

Страница 14: ... Physical Dimensions Physical U S Metric Characteristic Dimension Tolerance Dimension Tolerance Height 1 00 inch 0 02 inch 25 4 mm 0 51 mm Length 5 75 inches 0 02 inch 146 05 mm 0 51 mm Width 4 00 inches 0 02 inch 101 6 mm 0 51 mm Weight WDE2170 1 1 pounds 0 11 lbs 0 48 kg 0 05 kg Weight WDE4360 1 2 pounds 0 11 lbs 0 53 kg 0 05 kg ...

Страница 15: ...nd WDE4360 drives Figure 2 1 50 pin Drive Dimensions Table 2 4 50 pin Drive Dimensions Dimension Inches Millimeters A1 4 000 020 101 60 0 51 A2 3 750 010 95 25 0 25 A3 2 375 010 60 32 0 25 A4 1 750 010 44 45 0 25 A5 5 750 020 146 05 0 51 A6 625 020 15 87 0 51 A7 1 638 010 41 60 0 25 A8 1 787 010 45 39 0 25 A9 4 000 010 101 60 0 25 A10 250 010 6 35 0 25 A11 1 000 020 25 40 0 51 A12 035 020 0 89 0 5...

Страница 16: ...ensions Dimension Inches Millimeters A1 4 000 020 101 60 0 51 A2 3 750 010 95 25 0 25 A3 2 375 010 60 32 0 25 A4 1 750 010 44 45 0 25 A5 5 750 020 146 05 0 51 A6 625 020 15 87 0 51 A7 1 638 010 41 60 0 25 A8 1 787 010 45 39 0 25 A9 4 000 010 101 60 0 25 A10 250 010 6 35 0 25 A11 1 000 020 25 40 0 51 A12 067 020 1 70 0 51 A13 410 020 10 41 0 51 ...

Страница 17: ...nsions Dimension Inches Millimeters A1 4 000 020 101 60 0 51 A2 3 750 010 95 25 0 25 A3 2 375 010 60 32 0 25 A4 1 750 010 44 45 0 25 A5 5 750 020 146 05 0 51 A6 625 020 15 87 0 51 A7 1 638 010 41 60 0 25 A8 1 787 010 45 39 0 25 A9 4 000 010 101 60 0 25 A10 250 010 6 35 0 25 A11 1 000 020 25 40 0 51 A12 069 020 1 75 0 51 A13 2 000 020 50 80 0 51 ...

Страница 18: ... to be mounted in any orientation See Figure 2 4 for orientation axes The hard drive is a precision mechanical assembly Improper mounting may distort the drive frame and impair its ability to function For instructions on installing the drive including drive handling and mounting refer to the WD Enterprise Installation Guide document number 4079 001046 Figure 2 4 Drive Axis Definition ...

Страница 19: ...formed The drive was track following on the OD cylinder for these measurements 3 This is for a ratio of four reads per one write 4 Differential option available on 68 pin models only Table 2 8 WDE4360 Current Requirements and Power Dissipation Operating Mode Current Population Mean 4 Sigma Current Population Mean Power Pop Mean 4 Sigma Power Population Mean 12 VDC 5 VDC SE Diff 4 12 VDC 5 VDC SE D...

Страница 20: ...WDE2170 and WDE4360 drives during spin up and run Figure 2 5 WDE2170 12V Current Profile 0 1 2 3 4 5 6 7 8 9 10 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 TIM E Seconds CU RREN T Am ps W D E2170 Spinup Peak AC C urrent Spinup Peak D C Current Figure 2 6 WDE4360 12V Current Profile 0 1 2 3 4 5 6 7 8 9 10 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 T IM E Seconds CU RRENT Am ps W DE 4360 ...

Страница 21: ...d to accept the following commands Inquiry Request Sense Start Stop Unit Test Unit Ready Refer to the Western Digital SCSI Implementation Guide document number 4096 001116 for additionally supported SCSI commands and features 3 Internal electronic component initialization and testing continues 4 If the Auto Start option is enabled the motor spins up 5 The servo system calibrates itself 6 Additiona...

Страница 22: ...minimum Operating Shock WD Enterprise drives are tested by applying a linear shock in each axis one axis at a time at a rate not exceeding two shocks per second The drive incurs no physical damage and no hard errors while subjected to intermittent shock not exceeding the level listed in Table 2 10 Operating performance may degrade during periods of shock application Non operating Shock WD Enterpri...

Страница 23: ...g periods of vibration application Non operating Vibration Note This specification applies to handling and transportation of unmounted drives Drives are tested by applying a continuous swept sine excitation in each linear axis one axis at a time Sweep rate is one octave per minute The drive incurs no physical damage when subjected to continuous vibration not exceeding the level listed in Table 2 1...

Страница 24: ...fied in Table 2 12 Figure 2 7 and Figure 2 8 show the temperature measurement locations Sustained operation at temperatures in excess of the reliability values degrades the MTBF rating Short excursions up to but not exceeding the maximum values do not affect the MTBF rating Maximum component temperature ratings must not be exceeded under any operating condition The drive may require forced air coo...

Страница 25: ...g 1 000 feet to 40 000 feet 300m to 12 000m 2 5 5 Acoustics Table 2 14 Sound Power Level Mode Typical Maximum Idle 4 0 A weighted Bels 4 3 A weighted Bels Seek 5 0 A weighted Bels 5 3 A weighted Bels Notes 1 Sound power is measured in accordance with ECMA 74 and ISO 7779 Seek mode sound power is measured while the drive performs random seeks at a rate of 33 seeks sec 2 Drives are tested after a 20...

Страница 26: ...Specifications WD Enterprise WDE2170 WDE4360 RELEASED 04 08 97 4079 001045 Rev B 18 Figure 2 7 Drive Baseplate Thermocouple Location ...

Страница 27: ...WD Enterprise WDE2170 WDE4360 Specifications 4079 001045 Rev B RELEASED 04 08 97 19 Figure 2 8 PCBA Thermocouple Locations ...

Страница 28: ...riters Laboratories UL Standard 1950 Standard for Safety of Information Technology Equipment including Electrical Business Equipment File E101559 Canadian Standards Association CSA Standard C22 2 No 950 M89 Standard for Safety of Information Technology Equipment including Electrical Business Equipment File LR68850 TUV Essen Laboratories IEC 950 EN60950 Standard for Safety of Information Technology...

Страница 29: ...and customer data a necessity for good soft error rates In addition embedded servo technology is less susceptible to thermal shifts of the system since customer data and position information are recorded together on the same track 3 4 Read Caching and Pre Fetch Read caching allows the drive to maintain data in the cache for quick transfer to the host when a media access is not required Pre fetchin...

Страница 30: ...hey are scheduled in the next I O process 3 9 Media Defect Management Western Digital drives support a defect management algorithm that uses sector slipping Defective sites are pushed down during a reassignment operation to maintain a sequential order Spare sectors are placed throughout the drive to support this algorithm This routine can be invoked by the drive when Auto Read Reallocation Auto Wr...

Страница 31: ... zones at a faster rate 3 14 Headerless Format Headerless format is also known as ID less or No ID sector format This format removes the header or ID fields and all the information within the header track format to provide a dramatic increase in user capacity Our advanced integrated SCSI controller assumes the task of determining the physical location of each sector 3 15 LED Support If an LED is i...

Страница 32: ...nous and wide negotiation when appropriate Disable Unit Attention This controls whether a CHECK CONDITION status is reported following a Power On or Reset sequence A REQUEST SENSE command following one of those conditions still yields the correct sense data for the UNIT ATTENTION condition as sense data is generated regardless of the jumper setting A jumper on this pin disables the generation of a...

Страница 33: ... byte symbols On the fly ECC is capable of correcting single burst errors up to 1 byte per interleave 24 bits total with no performance degradation On the fly correction is done in hardware and cannot be disabled The drive firmware also implements a software ECC which is capable of correcting single or double burst errors up to 2 bytes per interleave Refer to the Western Digital SCSI Implementatio...

Страница 34: ... to be removed The drive is not supplying TERMPWR to the SCSI bus The drive is not supplying termination to the SCSI bus Power both 5V and 12V must be removed before the SCSI bus signals are disconnected The drive signal ground must be broken after the SCSI bus signals The SCA 2 80 pin connector allows for proper insertion and extraction by providing an appropriate mechanical mating that makes the...

Страница 35: ...rprise WDE2170 WDE4360 SCSI Interface and Command Set 4079 001045 Rev B RELEASED 04 08 97 27 4 SCSI INTERFACE AND COMMAND SET Refer to the Western Digital SCSI Implementation Guide document number 4096 001116 ...

Страница 36: ...mands Jumpers are used to enable or disable the options and modify the drive configuration The user configurable jumpers appear in Table 5 1 Note Jumpers should only be changed when the drive is powered down 5 1 Physical Characteristics The block consists of a 2 pin by 17 pin male header Pin to pin spacing is 2 mm by 2 mm 5 2 Pin Designation The pin layout appears below The diagram represents the ...

Страница 37: ... LED cathode connection RESERVED 11 12 11 Ground 12 Reserved OPT 1 DISABLE AUTO START 13 14 Install jumper to disable auto start OPT 2 AUTO START DELAY 15 16 Install jumper to enable auto start delay OPT 3 SCAM 17 18 Install jumper to enable SCAM OPT 4 DISABLE UNIT ATTENTION 19 20 Install jumper to disable unit attention OPT 5 DISABLE TARGET INITIATED SYNCHRONOUS WIDE NEGOTIATION 21 22 Install jum...

Страница 38: ...e JUMPER LOCATION SCSI ID Pins 7 8 Pins 5 6 Pins 3 4 Pins 1 2 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 If any device on your computer s SCSI bus supports only 8 bit SCSI IDs the WD Enterprise drive must be set to one of these values When setting IDs on 50 pin drives pins 7 and 8 are not used jumper installed jumper removed legal 8 bit bus IDs ...

Страница 39: ...I hard drives are designed to conform to the SCSI 3 Parallel Interface as described in the draft of proposed ANSI specification X3T10 855D Revision 15a In addition drives equipped with the 80 pin SCA connector are designed to conform to the Small Form Factor Committee draft specification SFF 8046 Rev 2 0 entitled SCA 2 Single Connector Attach for SCSI Disk Drives Since tutorials on SCSI 3 and SCA ...

Страница 40: ...Connectors WD Enterprise WDE2170 WDE4360 RELEASED 04 08 97 4079 001045 Rev B 32 6 3 50 Pin SCSI Connector Figure 6 1 50 Pin SCSI Connector and Power Connector Pin Numbers 50 49 51 52 2 1 53 54 DRIVE OUTLINE ...

Страница 41: ... 11 12 DB5 GROUND 13 14 DB6 GROUND 15 16 DB7 GROUND 17 18 DBP GROUND 19 20 GROUND GROUND 21 22 GROUND open 23 24 open open 25 26 TERMPWR open 27 28 open GROUND 29 30 GROUND GROUND 31 32 ATN GROUND 33 34 GROUND GROUND 35 36 BSY GROUND 37 38 ACK GROUND 39 40 RST GROUND 41 42 MSG GROUND 43 44 SEL GROUND 45 46 C D GROUND 47 48 REQ GROUND 49 50 I O Table 6 4 DC Power Connector Signal Name Pin Number Si...

Страница 42: ...prise WDE2170 WDE4360 RELEASED 04 08 97 4079 001045 Rev B 34 6 4 68 Pin SCSI Connector Figure 6 2 68 Pin SCSI Connector Remote Option Connector and Power Connector Pin Numbers 81 82 83 84 80 79 70 69 68 34 35 1 DR IVE OUTLINE ...

Страница 43: ...B5 DB4 11 45 DB4 GROUND 12 46 DB6 DB5 12 46 DB5 GROUND 13 47 DB7 DB6 13 47 DB6 GROUND 14 48 DBP0 DB7 14 48 DB7 GROUND 15 49 GROUND DBP0 15 49 DBP0 GROUND 16 50 GROUND DIFFSENS 16 50 GROUND TERMPWR 17 51 TERMPWR TERMPWR 17 51 TERMPWR TERMPWR 18 52 TERMPWR TERMPWR 18 52 TERMPWR open 19 53 open open 19 53 open GROUND 20 54 GROUND ATN 20 54 ATN GROUND 21 55 ATN GROUND 21 55 GROUND GROUND 22 56 GROUND ...

Страница 44: ...SEL0 1 69 70 2 XTFALT GROUND SCSI ID 1 SEL1 3 71 72 4 VUNIQ GROUND SCSI ID 2 SEL3 5 73 74 6 reserved RESERVED SCSI ID 3 SEL3 7 75 76 8 XTACTV LED TERMEN ENTERM 9 77 78 10 GROUND GROUND 5V 5V 11 79 80 12 FAULT NO CONNECTION Table 6 7 DC Power Connector single ended and differential versions Signal Name Pin Number Signal Name 12V 12 SUPPLY 81 82 GROUND 12 RETURN GROUND 5 RETURN 83 84 5V 5 SUPPLY 6 5...

Страница 45: ...UND DB8 10 50 GROUND I O 11 51 GROUND REQ 12 52 GROUND C D 13 53 GROUND SEL 14 54 GROUND MSG 15 55 GROUND RST 16 56 GROUND ACK 17 57 GROUND BSY 18 58 GROUND ATN 19 59 GROUND DBP0 20 60 GROUND DB7 21 61 GROUND DB6 22 62 GROUND DB5 23 63 GROUND DB4 24 64 GROUND DB3 25 65 GROUND DB2 26 66 GROUND DB1 27 67 GROUND DB0 28 68 GROUND DBP1 29 69 GROUND DB15 30 70 GROUND DB14 31 71 GROUND DB13 32 72 GROUND ...

Страница 46: ...thing to come in direct contact with the drive or PCBA Do not insert any other items in the shielded anti static bag with the drive 7 2 Maintaining the Drive To keep the drive in optimal working order and prolong the life of the unit do the following Do not attempt to open the sealed compartment of the WDE2170 WDE4360 drive this will void the warranty Avoid harsh shocks or vibrations Observe the e...

Страница 47: ...ysical installation Jumper selections on the WDE2170 and WDE4360 Correct cabling Controller card properly seated and configured System power supply Observe the environmental limits specified for this product For literature and additional tips DocuFAX automated FAX system 714 932 4300 Internet WWW site http www wdc com America Online keyword Western Digital or WDC Microsoft Network keyword WDC If t...

Страница 48: ...orithms Customer Configuration Code CCC Located on the product label attached to the drive This code is revised only when changes affect the drive s form fit or function Data Transfer Rate Speed at which data transfers to and from the disk media actual disk platter a function of the recording frequency Typical units are bits per second bps or bytes per second Modern hard drives have an increasing ...

Страница 49: ... as 1 000 000 bytes MTBF Mean Time Between Failures Mean number of life units in 106 hours during which all parts of the drive perform within their specified limits during a particular measurement interval under stated conditions Recoverable Error Read error transient or otherwise that can be corrected by ECC recovery or by re reading the data RPM Revolutions per Minute Rotational speed of the med...

Страница 50: ...ecovery process Ultra SCSI Provides 20 MB s over an 8 bit bus or 40 MB s over a 16 bit Wide SCSI bus Known also as Fast 20 SCSI this feature is most commonly found in SCSI 3 devices Unrecoverable Error Read error that cannot be corrected by an ECC scheme or by re reading the data when host retries are enabled Zoned Recording Increases the data density on the outer tracks of the drive where most of...

Страница 51: ...umber convention for WD Enterprise drives The table illustrates the interface matrix portion of the model number INTERFACE MATRIX Matrix Code Interface Connector Buffer Termination Installed Term Pwr Installed SE Diff 50 pin 68 pin 80 pin 512K 1 MB Yes No Yes No 01 X X X X X 03 X X X X X 05 X X X X X 07 X X X X X 08 X X X X X 12 X X X X X 16 X X X X X 17 X X X X X 23 X X X X X 32 X X X X X ...

Страница 52: ...romagnetic Compatibility 20 Embedded Servo Control 40 Error Correction Code 40 Error Rate 4 40 Error Recovery Operations 25 F FCC 20 FIT Functional Integrity Testing 41 Formatted Capacity 5 41 Full Stroke Seek 4 G Glossary 40 H Hard Error 41 Headerless Format 23 Host Transfer Rate 41 Hot Plug Unplug Support 26 Humidity 16 I Installation 38 Interface 5 Internet 39 L Landing Zone 41 Latency 4 41 LED...

Страница 53: ... Connector Pin Numbers 50 Pin 33 68 Pin 35 SCSI ID Jumper Table 30 SCSI Physical Interface 31 SCSI 1 41 SCSI 2 41 SCSI 3 41 Sector 41 Seek Time 4 41 Servo Burst 42 Servo Type 5 Shock 14 Soft Error 42 Specifications 4 Electrical 11 Environmental 14 Mechanical 7 Performance 4 Physical 5 Reliability 20 T Technical Support 39 Telephone Support 39 Temperature 16 U Ultra SCSI 42 Unrecoverable Error 42 U...

Страница 54: ...H0300 4 97 ...

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