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DEC 525-MB, Installation Manual, Page: 10 / 10

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Installation Guide

Specifications

The following table describes operational specifications:

Table 4.  Operational Specifications

Characteristics

Specifications

Capacity (formatted)

525 MB

Number of disks

3

Number of read/write heads

6

Track density (tracks per inch)

2670

Logical characteristics

•

Cylinders

•

Heads

•

Sectors per track

•

Total number of sectors

1017

16

63

1,025,136

Seek times (average)

•

Read-on-arrival

•

Average write

•

Track-to-track

•

Full stroke

10 ms

11 ms

< 3 ms

25 ms

Data transfer rate

•

Disk to read buffer

•

Read buffer to IDE-bus (PIO mode)

2.30–4.66 MB/s

5.00 MB/s

DisCache size

512 KB

Rotational latency (average)

6.7 ms

•

Temperature

•

Operating

•

Nonoperating

0° to 55°C

-40° to 65°C

•

Humidity

•

Operating

•

Nonoperating

8% to 85%

5% to 95%

8

Summary of Contents for 525-MB

Page 1: ...DECpc 525 MB IDE Hard Disk Drive Installation Guide EK XARCG IA A01 Digital Equipment Corporation Maynard Massachusetts ...

Page 2: ...Rights Use duplication or disclosure by the U S Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Copyright Digital Equipment Corporation All Rights Reserved Printed in U S A The following are trademarks of Digital Equipment Corporation DEC DECpc and the Digital logo The following is a third ...

Page 3: ...ou Start Read the following installation instructions If you are unsure about your ability to install the drive you can contact Digital Services to hire a Digital Services technician to install the drive for you If you are replacing a drive or adding a second drive always back up the data before starting the installation The drive can be connected directly to the 40 pin IDE bus connector located o...

Page 4: ...The jumpers are located at J9 and J12 on the printed circuit board Figure 1 Spare No Connection SP DS SY LED PCB GND J12 Control Connector Side View GND GND GND GND L J 0 3 0 4 6 T I 0 Jumpers J9 DS SP SY CS SS Figure 1 Jumper Locations ________________________Note __________________________ Jumpers CS and SY are not applicable to DECpc computers Do not change their factory default settings Table ...

Page 5: ...and DS open at J12 Drive Select DS Jumper Configurations The drive is configured at the factory as a master drive with the DS pins jumpered on J9 If you install the drive as a slave park the factory installed DS jumper The DS jumper is a small plastic block that plugs onto a pair of pins Figure 2 shows the J9 DS pins both jumpered master drive and open parked slave drive DS SP SY DS SP SY L J 0 3 ...

Page 6: ...r Setting Descriptions Drive Configuration Setting Slave drive DS Open parked SP Open parked Master drive using the DASP signal to indicate that a slave drive is present Use this configuration in most cases DS Jumpered default Master drive using the SP jumper instead of the DASP signal to indicate that a slave drive is present DS Jumpered SP Jumpered Installing the Drive Perform the following step...

Page 7: ...ts Figure 3 Some computers require you to install drive rails If so attach the drive rails supplied with your computer to the expansion brackets _____________________ CAUTION ___________________________ Use the short 3 16 inch screws to mount the brackets to the drive The longer screws will extend into the circuit board and damage the drive Use the longer screws to attach the drive rails to the ex...

Page 8: ...EISA 32 bit System Configuration Utility SCU Run the appropriate setup utility to enter the new drive parameters See your computer user guide for the configuration instructions 7 Select the Hard Drive 1 Hard Drive 2 field in the appropriate setup utility Using the following logical addressing parameters Table 3 you either Select a drive type from a predetermined list of drives that matches these p...

Page 9: ...our computer user guide 8 Reboot your computer If the operating system is not installed boot the system with the operating system installation diskette See the operating system information for further instructions 9 Partition and format the drive Use these commands with MS DOS FDISK to partition the drive FORMAT to prepare each partition to receive MS DOS files FORMAT C S to copy the operating sys...

Page 10: ...670 Logical characteristics Cylinders Heads Sectors per track Total number of sectors 1017 16 63 1 025 136 Seek times average Read on arrival Average write Track to track Full stroke 10 ms 11 ms 3 ms 25 ms Data transfer rate Disk to read buffer Read buffer to IDE bus PIO mode 2 30 4 66 MB s 5 00 MB s DisCache size 512 KB Rotational latency average 6 7 ms Temperature Operating Nonoperating 0 to 55 ...

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