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Appendix B, A Brief Overview of SCSI

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Operating This Jukebox on a SCSI Bus A Brief Overview of SCSI • This connector is similar to a D-type connector, but smaller and with smaller pin holes placed closer together. • 50-pin low-density ribbon (usually internal to the host) Wide devices (68- pin) use the following connectors: • 68-pin high density Micro D connector (external) This connector is similar to a D-type connector, but longer and slimmer and with smaller pin holes placed closer together. This connector is becoming the most common. • 68-pin high density ribbon (usually internal to the host) Operation on a SCSI Bus Appendix B B- 6

Section	Page
HP SureStore 300mx / 600mx / 700mx Optical Jukebox	1
HP SureStore 300mx / 600mx / 700mx Optical Jukebox	1
HP SureStore 300mx / 600mx / 700mx Optical Jukebox	1
User’s Guide	1
Edition 1	1
HP Part No. C1160-90021	1
Printed in: Greeley, CO USA	1
Printed in: Greeley, CO USA	1
© Copyright August 2000	1
© Copyright August 2000	1
Notice	2
Notice	2
This document contains information that is protected by copyright. All rights are reserved. No pa...	2
Hewlett-Packard makes no warranty of any kind with regard to this printed material, including, bu...	2
© Copyright August 2000	2
© Copyright August 2000	2
Printing History	2
Printing History	2
New editions of this manual incorporate all material updated since the previous edition. The manu...	2
Typographical Conventions	3
Typographical Conventions	3
The following typographical conventions are used in this manual:	3
Emphasis	3
Emphasis	3
Keycap	3
Keycap	3
Computer Output	3
Computer Output	3
Computer Output	3
WARNING Warnings call attention to a procedure or practice that could result in personal injury i...	3
WARNING Warnings call attention to a procedure or practice that could result in personal injury i...	3
CAUTION Cautions call attention to an operating procedure or practice that could damage the produ...	3
CAUTION Cautions call attention to an operating procedure or practice that could damage the produ...	3
NOTE Notes provide information that can be helpful in understanding the operation of the product.	3
NOTE Notes provide information that can be helpful in understanding the operation of the product.	3
In This Manual	4
In This Manual	4
This user’s guide includes:	4
Chapter 1	4
Chapter 1	4
Chapter 1	4
set-up information for this optical jukebox	4
set-up information for this optical jukebox	4
Chapter 2	4
Chapter 2	4
information about choosing and using optical disks	4
information about choosing and using optical disks	4
Chapter 3	4
Chapter 3	4
features description, operating instructions, and troubleshooting information	4
features description, operating instructions, and troubleshooting information	4
Appendix A	4
Appendix A	4
supplies and customer support	4
supplies and customer support	4
Appendix B	4
Appendix B	4
operating this jukebox on a SCSI bus	4
operating this jukebox on a SCSI bus	4
Appendix C	4
Appendix C	4
safety and regulatory information	4
safety and regulatory information	4
Glossary of Terms	4
Index	4
1 Setting Up the Jukebox	13
1 Setting Up the Jukebox	13
Overview of This Chapter	14
Overview of This Chapter	14
This chapter gives information on the following topics:	14
• what you need to set up the jukebox	14
• what you need to set up the jukebox	14
• what you need to set up the jukebox	14
• choosing a proper environment for the jukebox	14
• choosing a proper environment for the jukebox	14
• identifying features on the jukebox side panels	14
• identifying features on the jukebox side panels	14
• connecting the jukebox to your computer	14
• connecting the jukebox to your computer	14
• connecting power	14
• connecting power	14
• moving and shipping the jukebox	14
• moving and shipping the jukebox	14
setting up the jukebox	14
setting up the jukebox	14
setting up the jukebox	14
• power cord (included)	14
• power cord (included)	14
• power cord (included)	14
• single-ended and differential SCSI terminators (included)	14
• single-ended and differential SCSI terminators (included)	14
• SCSI cable with either a 50-pin high-density or a 68-pin high-density connector depending on wh...	14
• SCSI cable with either a 50-pin high-density or a 68-pin high-density connector depending on wh...	14
• single-ended or differential SCSI host adapter with at least one available address	14
• single-ended or differential SCSI host adapter with at least one available address	14
• application software that supports this type of jukebox	14
• application software that supports this type of jukebox	14
• this guide (included)	14
• this guide (included)	14
choosing a location	14
choosing a location	14
choosing a location	14
location:choosing	14
Before setting up your jukebox, choose the proper environment based on the following recommendati...	14
• temperature range between 65-75º F (18-24º C).	14
• temperature range between 65-75º F (18-24º C).	14
• temperature range between 65-75º F (18-24º C).	14
• away from sources of particulate contamination such as printers, scanners, frequently-used door...	14
• away from sources of particulate contamination such as printers, scanners, frequently-used door...	14
• enough room to comfortably insert disks in the mailslot, 2-3 inches on all other sides to allow...	14
• enough room to comfortably insert disks in the mailslot, 2-3 inches on all other sides to allow...	14
• availability of AC power with voltage ranges of 100-127 V or 200-240 V (nominal).	14
• availability of AC power with voltage ranges of 100-127 V or 200-240 V (nominal).	14
system components needed	15
system components needed	15
system components needed	15
This jukebox requires application software to operate it as a single storage device composed of m...	15
Standard Configuration	15
Standard Configuration	15
The following list shows the hierarchy of the system components needed to operate this jukebox in...	15
• Host computer CPU	15
• Host computer CPU	15
• Host computer CPU	15
• Operating system	15
• Operating system	15
• Optical jukebox application software	15
• Optical jukebox application software	15
• Jukebox SCSI drivers (may be included in optical jukebox application software above)	15
• Jukebox SCSI drivers (may be included in optical jukebox application software above)	15
• Jukebox	15
• Jukebox	15
high-availability:components needed	15
high-availability:components needed	15
high-availability:components needed	15
The following list shows the hierarchy of the system components needed to operate this jukebox in...	15
• Host computer CPUs (two host computers)	15
• Host computer CPUs (two host computers)	15
• Host computer CPUs (two host computers)	15
• Operating systems (on two host computers)	15
• Operating systems (on two host computers)	15
• High-availability application software (links both host computers)	15
• High-availability application software (links both host computers)	15
• Optical jukebox application software (on both host computers)	15
• Optical jukebox application software (on both host computers)	15
• Jukebox SCSI drivers (may be included in optical jukebox application software above)	15
• Jukebox SCSI drivers (may be included in optical jukebox application software above)	15
• Jukebox	15
• Jukebox	15
Identifying Controls and Features	16
Identifying Controls and Features	16
Figure 1-1 Right Side	16
Figure 1-1 Right Side	16
<GRAPHIC>	17
<TABLE>	17
<TABLE>	17
<TABLE BODY>	17
<TABLE ROW>	17
1	17
Control panel	17
Used to manually control and monitor operation of the jukebox. A full description of the controls...	17
<TABLE ROW>	17
2	17
Mailslot	17
Used to load and eject optical disks.	17
<TABLE ROW>	17
3	17
Power switch	17
Used to power the jukebox on and off.	17
<TABLE ROW>	17
4	17
Right service access panel	17
right service access panel	17
A service panel that should be removed only by your service representative.	17
Figure 1-2 Left Side	18
Figure 1-2 Left Side	18
<GRAPHIC>	19
<TABLE>	19
<TABLE>	19
<TABLE BODY>	19
<TABLE ROW>	19
5	19
Active bus indicator	19
SCSI bus:active bus indicator	19
Lit when the SCSI bus is active. There is an indicator for the single-ended interface and an indi...	19
<TABLE ROW>	19
6	19
SCSI interface selection switch	19
SCSI bus:interface selection switch	19
Used to select either the single-ended or differential SCSI interface.	19
<TABLE ROW>	19
7	19
SCSI ports	19
Used for attaching the SCSI cable from the jukebox to the host computer. Select either the single...	19
<TABLE ROW>	19
8	19
Power receptacle	19
power receptacle	19
Connection for the power cord.	19
<TABLE ROW>	19
9	19
Left access panel	19
left access panel	19
Covers the interface assembly (see components 5, 6, 7, and 8 above). This panel is removed by pus...	19
connecting the SCSI cables	20
connecting the SCSI cables	20
connecting the SCSI cables	20
SCSI cables:connecting	20
The following is general cabling information.	20
<TABLE>	20
<TABLE>	20
<TABLE BODY>	20
<TABLE ROW>	20
Interface types available	20
Single-ended or differential SCSI, selected by the interface selection switch on the top of the i...	20
Single-ended or differential SCSI, selected by the interface selection switch on the top of the i...	20
<TABLE ROW>	20
Number of hosts	20
This jukebox may be used in high availability environments. High availability environments can be...	20
This jukebox may be used in high availability environments. High availability environments can be...	20
This jukebox may be used in high availability environments. High availability environments can be...	20
SCSI cables:maximum length	20
SCSI cables:maximum length	20
Table 1-1 Maximum SCSI External Cable Lengths (Assuming no devices internal to the host computer)	20
Table 1-1 Maximum SCSI External Cable Lengths (Assuming no devices internal to the host computer)	20
<TABLE>	20
<TABLE HEADING>	20
<TABLE ROW>	20
Interface Type	20
Maximum External Cable Length	20
<TABLE BODY>	20
<TABLE ROW>	20
Single-Ended SCSI (50-pin high-density connector)	20
3 meters (9.8 feet)	20
<TABLE ROW>	20
Differential SCSI (68-pin high-density connector)	20
25 meters (82.0 feet)	20
NOTE Hewlett-Packard recommends that you use SCSI cables with thumbscrew connectors. Clip type ca...	20
NOTE Hewlett-Packard recommends that you use SCSI cables with thumbscrew connectors. Clip type ca...	20
Choosing Your Cabling Configurations	21
Choosing Your Cabling Configurations	21
Pick the configuration that applies to your plans below. You will be shown the page for the prope...	21
<TABLE>	21
<TABLE>	21
<TABLE BODY>	21
<TABLE ROW>	21
One Host Computer (standard configuration)	21
Refer to Page	21
<TABLE ROW>	21
Will the jukebox be the only device on the bus?	21
1-10	21
<TABLE ROW>	21
Will other devices be on the same SCSI bus with the jukebox? (not recommended)	21
1-12	21
<TABLE ROW>	21
Two host computers (high-availability configuration):	21
<TABLE ROW>	21
Consult with your high-availability vendor	21
—	21
connecting the jukebox:only peripheral	22
connecting the jukebox:only peripheral	22
connecting the jukebox:only peripheral	22
NOTE This following configuration is the recommended configuration for this jukebox.	22
NOTE This following configuration is the recommended configuration for this jukebox.	22
Figure 1-3 Connecting the Jukebox as the Only Peripheral	22
Figure 1-3 Connecting the Jukebox as the Only Peripheral	22
<GRAPHIC>	22
1. Ensure the power to the host computer is turned off.	22
1. Ensure the power to the host computer is turned off.	22
1. Ensure the power to the host computer is turned off.	22
2. Remove the left side access panel (side opposite the mailslot side) by lifting up on the botto...	22
2. Remove the left side access panel (side opposite the mailslot side) by lifting up on the botto...	22
3. Select either the single-ended or differential SCSI interface using the SCSI interface selecti...	22
3. Select either the single-ended or differential SCSI interface using the SCSI interface selecti...	22
4. Connect a cable between the host computer and one of the jukebox SCSI connectors of your selec...	23
4. Connect a cable between the host computer and one of the jukebox SCSI connectors of your selec...	23
You may connect the SCSI cable to either port of the jukebox.	23
NOTE Plug a terminator into the unused port of the interface type you are using. Also, put a term...	23
NOTE Plug a terminator into the unused port of the interface type you are using. Also, put a term...	23
NOTE Go to “Connecting Power” and then to “Write Verify” to finish installation.	23
NOTE Go to “Connecting Power” and then to “Write Verify” to finish installation.	23
connecting the jukebox:with other devices	24
connecting the jukebox:with other devices	24
connecting the jukebox:with other devices	24
NOTE Operating this jukebox with other peripherals on the same bus is supported, but not recommen...	24
NOTE Operating this jukebox with other peripherals on the same bus is supported, but not recommen...	24
In most circumstances, the recommended configuration for this jukebox is as the only device on a ...	24
It is possible to connect this jukebox on a bus with additional devices in different ways (depend...	24
• a 2- or 4-drive jukebox using basic SCSI addressing or	24
• a 2- or 4-drive jukebox using basic SCSI addressing or	24
• a 2- or 4-drive jukebox using basic SCSI addressing or	24
• a 2- or 4-drive jukebox using logical unit numbering (LUN) addressing	24
• a 2- or 4-drive jukebox using logical unit numbering (LUN) addressing	24
connecting the jukebox:issues with multiple devices	24
connecting the jukebox:issues with multiple devices	24
• How will the jukebox be used: archiving, backup, near-line storage? What performance must be ma...	24
• How will the jukebox be used: archiving, backup, near-line storage? What performance must be ma...	24
• How will the jukebox be used: archiving, backup, near-line storage? What performance must be ma...	24
• How will the other device under consideration be used? How much demand will it place on the bus?	24
• How will the other device under consideration be used? How much demand will it place on the bus?	24
• Will you be have to mix “wide” and “narrow” devices on the bus?	24
• Will you be have to mix “wide” and “narrow” devices on the bus?	24
• Are there devices on the internal part of the SCSI bus?	24
• Are there devices on the internal part of the SCSI bus?	24
• Will you be using a single-ended interface or a differential interface?	24
• Will you be using a single-ended interface or a differential interface?	24
NOTE Appendix B provides a brief overview of SCSI and the issues you must consider when placing o...	24
NOTE Appendix B provides a brief overview of SCSI and the issues you must consider when placing o...	24
connecting power	25
connecting power	25
connecting power	25
power:connecting	25
1. Ensure the power switch on the jukebox is OFF (see Figure 1-1).)	25
1. Ensure the power switch on the jukebox is OFF (see Figure 1-1).)	25
1. Ensure the power switch on the jukebox is OFF (see Figure 1-1).)	25
NOTE Use the power cord shipped with the jukebox.	25
NOTE Use the power cord shipped with the jukebox.	25
2. Plug the socket end of the power cord into the power port on the bottom of the interface enclo...	25
2. Plug the socket end of the power cord into the power port on the bottom of the interface enclo...	25
3. Plug the other end of the power cord into a power outlet.	25
3. Plug the other end of the power cord into a power outlet.	25
4. (After the jukebox is moved to its operating location) Lower the leveler feet and tighten the ...	25
4. (After the jukebox is moved to its operating location) Lower the leveler feet and tighten the ...	25
5. Turn the power on.	25
5. Turn the power on.	25
TESTING	25
TESTING	25
NOTE If	25
NOTE If	25
NOTE Go to “Configuring Write Verify” on the next page to complete the installation.	25
NOTE Go to “Configuring Write Verify” on the next page to complete the installation.	25
write verify	26
write verify	26
write verify	26
The write verify configuration ensures that data is written reliably to an optical disk. The juke...	26
Writing data on a magneto-optical disk requires two passes. The first pass erases the data in the...	26
When write verify is configured to ON, an additional pass is made over the sector. This third pas...	26
write verify:changing	26
write verify:changing	26
NOTE This is the last step in the installation process. Go to Chapter 3, “Operating the Jukebox.”	26
NOTE This is the last step in the installation process. Go to Chapter 3, “Operating the Jukebox.”	26
Moving or Shipping the Jukebox	27
Moving or Shipping the Jukebox	27
If you want to move the jukebox a short distance, such as to another office or to another floor i...	27
jukebox:moving	27
jukebox:moving	27
jukebox:moving	27
1. If you will be removing the disks from the jukebox, follow your jukebox application software i...	27
1. If you will be removing the disks from the jukebox, follow your jukebox application software i...	27
1. If you will be removing the disks from the jukebox, follow your jukebox application software i...	27
Ensure that there are no disks in the drives.	27
CAUTION Failure to eject a disk from the optical drive prior to moving the jukebox could result i...	27
CAUTION Failure to eject a disk from the optical drive prior to moving the jukebox could result i...	27
If you will be manually ejecting disks, refer to “Ejecting an Optical Disk from the Jukebox” in C...	27
CAUTION Turning off the jukebox in the next step could cause data loss if not done correctly.	27
CAUTION Turning off the jukebox in the next step could cause data loss if not done correctly.	27
Do not turn off power to the jukebox until you are sure the SCSI bus is inactive. Removing power ...	27
2. Switch jukebox power OFF (see “3” on Figure 1-1).	27
2. Switch jukebox power OFF (see “3” on Figure 1-1).	27
3. Lift off the left side panel and remove the power cord and the SCSI cable connections.	27
3. Lift off the left side panel and remove the power cord and the SCSI cable connections.	27
4. Loosen the 1/2-inch nut securing each of the four leveler feet and screw the feet up to raise ...	27
4. Loosen the 1/2-inch nut securing each of the four leveler feet and screw the feet up to raise ...	27
5. Carefully move the jukebox to its new destination.	27
5. Carefully move the jukebox to its new destination.	27
6. Set up the jukebox at its new location. Refer to the cabling and addressing information in the...	27
6. Set up the jukebox at its new location. Refer to the cabling and addressing information in the...	27
7. Lower the leveler feet and tighten the 1/2-inch nut on each foot.	27
7. Lower the leveler feet and tighten the 1/2-inch nut on each foot.	27
8. Bring the jukebox online according to your system’s requirements.	27
8. Bring the jukebox online according to your system’s requirements.	27
jukebox:shipping	28
jukebox:shipping	28
jukebox:shipping	28
1. Follow your jukebox application software instructions for unmounting and ejecting disks.	28
1. Follow your jukebox application software instructions for unmounting and ejecting disks.	28
1. Follow your jukebox application software instructions for unmounting and ejecting disks.	28
Ensure that there are no disks in the drives.	28
CAUTION Failure to eject a disk from the optical drive prior to moving the jukebox could result i...	28
CAUTION Failure to eject a disk from the optical drive prior to moving the jukebox could result i...	28
If you will be manually ejecting disks, refer to “Ejecting an Optical Disk from the Jukebox” in C...	28
2. Follow your jukebox application’s instructions for labeling the disks according to what you wi...	28
2. Follow your jukebox application’s instructions for labeling the disks according to what you wi...	28
CAUTION Turning off the jukebox in the next step could cause data loss if not done correctly.	28
CAUTION Turning off the jukebox in the next step could cause data loss if not done correctly.	28
3. Switch jukebox power OFF (see “3” on Figure 1-1).	28
3. Switch jukebox power OFF (see “3” on Figure 1-1).	28
4. Lift off the left side panel and remove the power cord and the SCSI cable connections.	28
4. Lift off the left side panel and remove the power cord and the SCSI cable connections.	28
5. Loosen the 1/2-inch nut securing the leveler feet and screw the feet up to raise them away fro...	28
5. Loosen the 1/2-inch nut securing the leveler feet and screw the feet up to raise them away fro...	28
6. Repackage the jukebox in the same way it was received.	28
6. Repackage the jukebox in the same way it was received.	28
NOTE Your service representative can provide assistance or advise you on how to best repackage an...	28
NOTE Your service representative can provide assistance or advise you on how to best repackage an...	28
2 Using Optical Disks	29
2 Using Optical Disks	29
Overview of This Chapter	30
Overview of This Chapter	30
Using Optical Disks	30
Using Optical Disks	30
The optical disks that you use with your jukebox are an integral part of the storage process. Thi...	30
• choosing an optical disk type	30
• choosing an optical disk type	30
• choosing an optical disk type	30
• labeling optical disks	30
• labeling optical disks	30
• write-protecting optical disks	30
• write-protecting optical disks	30
• caring for optical disks	30
• caring for optical disks	30
IMPORTANT Hewlett-Packard conducts extensive product quality testing to ensure it’s magneto-optic...	30
IMPORTANT Hewlett-Packard conducts extensive product quality testing to ensure it’s magneto-optic...	30
That’s why HP recommends using HP-brand optical media with its jukeboxes.	30
For additional details and specifications for HP optical media, or to purchase media online, go t...	30
disks:choosing	31
disks:choosing	31
disks:choosing	31
Two disk types are available for use in the jukebox: rewritable disks and write-once disks.	31
To choose which type of disks to use, consider these points:	31
• Rewritable optical disks--data can be repeatedly written and erased.	31
• Rewritable optical disks--data can be repeatedly written and erased.	31
• Rewritable optical disks--data can be repeatedly written and erased.	31
• Write-Once optical disks--data can be written only once, and the data cannot be altered or eras...	31
• Write-Once optical disks--data can be written only once, and the data cannot be altered or eras...	31
• Rewritable and write-once disks come in sector sizes from 4,096 bytes/sector down to 512 bytes/...	31
• Rewritable and write-once disks come in sector sizes from 4,096 bytes/sector down to 512 bytes/...	31
NOTE Do not use write-once disks in a computer system that does not support write-once disks. Che...	31
NOTE Do not use write-once disks in a computer system that does not support write-once disks. Che...	31
disks:labeling	32
disks:labeling	32
disks:labeling	32
Make it a practice to label your optical disk cartridges. You are provided adhesive labels with e...	32
NOTE Your jukebox application software may label your optical disk slot locations differently. Us...	32
NOTE Your jukebox application software may label your optical disk slot locations differently. Us...	32
• storage slot location (1, 2, 3, ... )	32
• storage slot location (1, 2, 3, ... )	32
• storage slot location (1, 2, 3, ... )	32
• date of format or initialization	32
• date of format or initialization	32
• disk owner (group, department, etc.)	32
• disk owner (group, department, etc.)	32
• storage purpose (backup, old version of operating system, etc.)	32
• storage purpose (backup, old version of operating system, etc.)	32
HP recommends using end labels as shown in Figure 2-1. End labels reduce the chance of label mate...	32
disk:labels jamming shutter	32
disk:labels jamming shutter	32
disk:labels jamming shutter	32
Figure 2-1 Recommended Placement of Cartridge Labels	32
Figure 2-1 Recommended Placement of Cartridge Labels	32
<GRAPHIC>	33
disks:writeprotecting	33
disks:writeprotecting	33
Each side of an optical disk can be write-protected by sliding the write-protect button in the di...	33
With rewritable optical disks, write-protecting the disk prevents overwriting existing files and ...	33
With write-once optical disks, existing files cannot be altered or erased regardless of whether o...	33
Figure 2-2 Write-Protect Button Location	33
Figure 2-2 Write-Protect Button Location	33
<GRAPHIC>	34
disks:care of	34
disks:care of	34
Follow these guidelines to ensure that your optical disks remain in good condition:	34
• Do not expose disks to extreme magnetic fields.	34
• Do not expose disks to extreme magnetic fields.	34
• Do not expose disks to extreme magnetic fields.	34
• Do not expose disks to dust particles.	34
• Do not expose disks to dust particles.	34
• Do not expose disks to extreme temperatures or extreme humidity.	34
• Do not expose disks to extreme temperatures or extreme humidity.	34
• Do not drop the disks.	34
• Do not drop the disks.	34
• Do not open a disk's metal shutter and touch the disk surface.	34
• Do not open a disk's metal shutter and touch the disk surface.	34
• Do not take disks apart.	34
• Do not take disks apart.	34
• Do not insert disks with loosely-attached labels into the jukebox.	34
• Do not insert disks with loosely-attached labels into the jukebox.	34
• Remove old disk labels before applying new ones especially if you choose to place labels on the...	34
• Remove old disk labels before applying new ones especially if you choose to place labels on the...	34
• Store disks in a clean, safe place when they are not in use.	34
• Store disks in a clean, safe place when they are not in use.	34
disks:cleaning	34
disks:cleaning	34
disks:cleaning	34
Normally, an optical disk does not require cleaning when used in a computer room or clean office ...	34
CAUTION Be very careful when cleaning an optical disk. Abrasive particles dragged across the disk...	34
CAUTION Be very careful when cleaning an optical disk. Abrasive particles dragged across the disk...	34
Clean a disk only with a disk cleaning kit. Follow the disk cleaning kit instructions exactly.	34
Disk cleaning kits are listed on	34
3 Operating the Jukebox	35
3 Operating the Jukebox	35
Overview of This Chapter	36
Overview of This Chapter	36
This chapter gives information on the following topics:	36
• operating the control panel	36
• operating the control panel	36
• operating the control panel	36
• using the selection buttons	36
• using the selection buttons	36
• interpreting messages which appear in the display window	36
• interpreting messages which appear in the display window	36