This manual provides information about the Sony SDT-10000/SDT-11000 Digital Data Storage (DDS) Tape Drives
which is necessary to integrate the drives into OEM products.
This manual describes the specifications, SCSI Interface, diagnostics, operation and installation of Sony DDS Tape
Drives. This drive is:
• SDT-10000/SDT-11000 20 to 40 GB capacity, 2.36 to 4.72 MBytes/Second Transfer Rate, Ultra/WIDE, Singleended or Low Voltage differential, 3.5"FH
*1, *2 This is assuming 2:1 Compression ratio.
The degree of data compression attained while recording data varies according to system environment and data
type.
Note: The SDT-10000/SDT-11000 drive uses data compression to achieve high capacity and high transfer rates. Ac-
tual capacity and transfer rate depends on the source file type.
Note: The capacity ratings listed above are based on a 150 meter DDS-4 tape cassette.
The Sony SDT-10000/SDT-11000 drive is a high capacity data storage device using 4 mm DAT (Digital Audio Tape)
technology. The SDT-10000/SDT-11000 drive achieves high data reliability through read-after-write, an additional
level of Error Correction Code, and other features.
The Sony SDT-10000/SDT-11000 drive stores data on tape using a standard format called DDS (Digital Data Storage),
DDS-DC, DDS-2, DDS-3 and DDS-4. This format is used by numerous other DDS tape drive manufacturers, providing
a broad range of compatible tape drives.
The Sony SDT-10000/SDT-11000 is fully READ and WRITE compatible with the DDS-4, DDS-3, DDS-2, DDS and
DDS-DC format tapes.
*1
*2
SONY SDT-10000/SDT-11000 DDS Tape Drive
1 - 1
1. Introduction
1.1 FEATURES OF THE DRIVE
Major features of the Sony SDT-10000/SDT-11000 include:
•20 GB capacity
•Sustained transfer rate - 2,360 KB/sec
•Supported Format: DDS-4, DDS-3, DDS-2, DDS , DDS-DC and DCLZ
•Fully READ and WRITE compatible with the DDS-4, DDS-3, DDS-2, DDS and DDS-DC format tapes
•Burst transfer rate
•Large 10 MB Buffer
•3 1/2 inch form factor
•Embedded SCSI interface (Ultra/WIDE, Single-ended or Low Voltage differential)
•Supports Variable or Fixed record length
•Supports SCSI Disconnection/Arbitration
•Read After Write (RAW)
•Frame rewrite function
•Three levels of Error Correction Code (ECC)
•High Speed search (100 times normal Read/Write speed)
•Random read
•N-Group write option (DDS-2, DDS and DDS-DC only)
•Dual Partition option
(20GB to 40 GB with Data Compression) *1
(approximately 2.36 MB/s to 4.72 MB/s with Data Compression) *2*1, *2 This is assuming 2:1 Compression ratio.
The degree of data compression attained while recording data varies according to system environment
and data type.
- 14 MB/sec Asynchronous
- 40 MB/sec Synchronous
1 - 2
SONY SDT-10000/SDT-11000 DDS Tape Drive
1. Introduction
1.2 REFERENCE
Please refer to the following documents for additional information:
•Helical-Scan Digital Computer Tape Cartridge for Information Interchange (3.81 mm (0.150 in) Digital Data Stor-
age (DDS) Recorded Format)
ANSI X3.203
•Proposed Final Test Unrecorded Helical-Scan Digital Computer Tape Cartridge
ANSI ASC TC X3B5 Document 92-251
•3,81 mm Wide Magnetic Tape Cartridge For Information Interchange
Helical Scan Recording, DDS Format, June 1990
European Computer Manufacturers Association (ECMA-139)
1
•3,81 mm Wide Magnetic Tape Cartridge For Information Interchange
Helical Scan Recording, DDS-DC Format, June 1991
European Computer Manufacturers Association (ECMA-150)
1
•Data Compression For Information Interchange
Adaptive Coding with Embedded Dictionary, DCLZ Algorithm, June 1991
European Computer Manufacturers Association (ECMA-151)
1
•3.81mm Wide Magnetic Tape Cartridge For Information Interchange
Helical Scan Recording, DDS-2 Format Using 120m Length Tapes,
December 1993
European Computer Manufacturers Association (ECMA-198)
1
•3.81mm Wide Magnetic Tape Cartridge For Information Interchange
Helical Scan Recording, DDS-3 Format Using 125m Length Tapes
European Computer Manufacturers Association(ECMA XXX)
1
•Designing a Data Storage Format for Digital Audio Tape (DAT)
DDS Manufacturers Group
•Small Computer System Interface (SCSI-1), ANSI X3.131-1986
The ANSI authorized standard for SCSI implementation, available through ANSI
2
•Enhanced Small Computer Systems Interface (SCSI-2)
ANSI X3T9.2/86-109 (Revision 10H, or above), available through ANSI
2
•Parallel Small Computer Systems Interface (SCSI-3)
ANSI X3T10/855D (Revision 15a, or above) available through ANSI.
Note 1: Also available from:European Computer Manufacturers Association
114 Rue du Rhone - CH-1204 Geneva(Switzerland)
TEL: (41) 22-735-36-34
FAX: (41) 22-786-52-31
Note 2: Also available from:Global Engineering Documents
2805 McGaw Avenue
Irvine, CA 92714
(800) 854-7179
(714) 261-1455
2. 1. 3. 1 SCSI Cables and Terminators................................................... 2-3
2. 3. 2. 1 Sustained Data Transfer Rate To and From Tape ................... 2-6
2. 3. 2. 2 Burst Data Transfer Rate To and From the SCSI Bus ............ 2-6
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2. SPECIFICATION
2. SPECIFICATIONS
Physical, environmental and performance specifications for the SDT-10000/SDT-11000
2. 1 PHYSICAL SPECIFICATIONS
2. 1. 1 Dimensions
The SDT-10000/SDT-11000 conforms to the 3.5 inch standard height form factor.
SDT-10000/SDT-11000
Height41.2 mm (1.62 in) ± 0.5 mm (0.02 in)
Width101.6 mm (4.0 in) ± 0.5 mm (0.02 in)
Depth146.0 mm (5.75 in) ± 0.5 mm (0.02 in)
Note: The above dimensions do not include the front panel thickness, eject button and some projecting.
41.2±0.5 mm
(1.62 inch)
101.6±0.5 mm
(4.00 inch)
101.6±0.5 mm
146±0.5 mm
3.8±0.5 mm
(0.15 inch)
SDT-10000/SDT-11000
Figure 2-1 Dimensions
(4.00 inch)
(5.75 inch)
41.2±0.5 mm
(1.62 inch)
SONY SDT-10000/SDT-11000 DDS Tape Drive
2 - 1
2. SPECIFICATION
2. 1. 1. 1 Mounting Holes
Figure 2-2 gives details of the mounting holes for the drive.
94 ± 0.3 mm
3.8 ± 0.5 mm
(0.15 in)
21 ± 0.3 mm
(0.83 in)
5 ± 0.3 mm
(3.70 in)
(0.20 in)
31 ± 0.3 mm
(1.22 in)
42 ± 0.3 mm
(1.65 in)
70 ± 0.3 mm
(2.76 in)
146 ± 0.5 mm
(5.75 in)
90 ± 0.3 mm
(3.45 in)
60 ± 0.3 mm
(2.36 in)
SDT-10000/SDT-11000
Figure 2-2 Mounting Holes
6-M3 (DEPTH 3mm)
(DEPTH 0.12 in)
3-M3 (DEPTH 3mm)
(DEPTH 0.12 in)
(4.00 in)
101.6 ± 0.5 mm
(1.62 in)
41.2 ± 0.5 mm
2 - 2
Note: Mounting Screw Thread Length 2.5 mm. If the mounting screw thread length is exceeded, damage to the drive
may occur.
SONY SDT-10000/SDT-11000 DDS Tape Drive
2. SPECIFICATION
2. 1. 2 Weight
•SDT-10000/SDT-11000 - 600 grams (1 lb 5 oz), without a cassette
2. 1. 3 Connectors
The SDT-10000/SDT-11000 has a SCSI connector with a power connector at the positions shown in Figure 2-3. All
other connectors are for use by Sony’s manufacturing and service facilities only.
SCSI & Power Connector
SDT-10000/SDT-11000
Figure 2-3 Connector Positions
2. 1. 3. 1 SCSI Cables and Terminators
The Single-Ended SCSI configuration is supported by SDT-10000 and SDT-11000.
The Low-Voltage-Differential SCSI configuration is supported by SDT-11000. The hardware specification of this interface can be found in Clause 3. Physical Characteristics, of the X3T10/1142D (SCSI Parallel Interface2) standard. Only
unshielded connectors are supported. Possible cable and connector sources are listed below. This does not imply that
these are the only sources for SCSI accessories.
Note: When using high speed data transfer with the SDT-10000/SDT-11000, it is recommended that total length of the
SCSI data cable not exceeded 1.5m for Single Ended SCSI configuration. As for Low-Voltage-differential SCSI
configuration for SDT-11000, less than 12m is recommended.
Cable30 AWG Ribbon
Hitachi UL 20818 (or equivalent)
ConnectorAMP 1-786090-7 (or equivalent)
SONY SDT-10000/SDT-11000 DDS Tape Drive
2 - 3
2. SPECIFICATION
2. 2 ENVIRONMENTAL SPECIFICATIONS
Note: The specifications which apply when a medium is present may be different than these.
2. 2. 1 Temperature and Humidity Range
Temperature
Operating:5°C to 40°C ( T<10°C/h)
Non-operating(mech):-40°C to 70°C ( T<20°C/h)
Non-operating(tape):-40°C to 45°C ( T<20°C/h)
Humidity
Operating:20 to 80% RH, non-condensing
Non-operating(mech):5 to 95% RH ( RH<30%/h)
Non-operating(tape):20 to 80% RH ( RH<30%/h)
Maximum wet bulb temperature=26°C
2. 2. 2 Altitude
Operating:0 to 2133 m (0 to 7000 feet)
2. 2. 3 Dust
Operating:Less than 150 microgram/m
Based Sampling period 24 hours
2. 2. 4 Vibration
Operating:Swept Sine 5 to 500 Hz
@ 0.25 G Peak 1 Octave/min.
3 axis, 3 directions
Non-operating:Swept Sine 5 to 500 Hz
@ 0.5 G Peak 1 Octave/min.
3 axis, 3 directions
2. 2. 5 Shock
Operating:No Data Loss
Half Sine
5 G Peak 3 ms
3 axes, 3 directions
Interval 10 seconds
3
2 - 4
Non-operating:No Device Damage
Half Sine
90 G Peak 3 ms
(30 G Peak 11 ms)
3 axes, 3 directions
SONY SDT-10000/SDT-11000 DDS Tape Drive
2. SPECIFICATION
2. 2. 6 Acoustic Noise
The ambient noise level is no greater than 25db (A). The sound-meter on (A) scale is located 1m in front of the center
of the unit front panel.
Streaming Write/Read35 db (A)
Insert/Eject60 db (A)
(A): A curve weight
2. 2. 7 ESD
Discharge Voltage
Less than 15kV: No operation failure
Less than 20kV: No drive damage
2. 2. 8 Orientation
The SDT-10000/SDT-11000 can be installed in three different mounting positions as shown in the figure below. Each
position has a maximum tolerance of +/– 10 degrees.
10°10
°
10
°
10
10°10
°
°
10°10
°
Figure 2-4 Mounting Attitude and Tolerance
SONY SDT-10000/SDT-11000 DDS Tape Drive
2 - 5
2. SPECIFICATION
2. 3 PERFORMANCE SPECIFICATION
The data capacity, data transfer rate and data reliability specifications in this chapter require the media to conform to the
DDS-4 Media Specification and also require the drive and media to remain within their respective operating and nonoperating environmental specifications. The specifications below also assume that the C3 ECC frame is generated on
writing and used as necessary on reading, and further assumes that read-after-write rewrites are used as necessary on
writing.
2. 3. 1 Data Capacity
The native (uncompressed) capacities of different length cartridges are as follows. Note that 60 m and 90 m cartridges
are automatically written in DDS-1 format, only 120 m cartridges are written in DDS-2 format, and only 125 m cartridges are written in DDS-3 format, and only 150 m cartridges are written in DDS-4 format
The SDT-10000/SDT-11000 includes a data compression capability. When data compression is enabled that the drive
capacity can increase typically twice. The efficiency of the data compression depends on the actual data that is being
compressed and cannot be predicted precisely prior to compression.
2. 3. 2. 1 Sustained Data Transfer Rate To and From Tape
The sustained transfer rates to and from the tape are as follows. For this sustained rate to be achieved, the drive must be
streaming. There may be some dependency on the host for this to be achieved.
*1 This is assuming 2:1 Compression ratio.
The degree of data compression attained while recording data varies according to system environment and data type.
2. 3. 2. 2 Burst Data Transfer Rate To and From the SCSI Bus
The SDT-10000/SDT-11000 will transmit and receive data bursts to and from the SCSI bus at a maximum burst rate of
14 megabytes per second, using WIDE SCSI asynchronous transfers and 40 megabytes per second, using WIDE SCSI
synchronous transfers.
2 - 6
2. 3. 3 Initialize Time
Initialize Time means the period from the time the drive is powered on to the time when the drive is ready and waiting
for a SCSI command such as INQUIRY or TEST UNIT READY.
Initialize Time is less than 1 seconds.
Note: The drive will respond with BUSY status until the completion of the Initialize Time.
Note: The Initialize Time does not include the time necessary for drive diagnostics to complete and the drive to become
ready for tape insertion.
SONY SDT-10000/SDT-11000 DDS Tape Drive
2. SPECIFICATION
2. 3. 4 Load Time
Load Time means the period from the time when the operator inserts a cassette into the drive to the time when the drive
is ready.
Load Time is less than 24 seconds (for a single partition tape).
2. 3. 5 Rewind Time
Rewind Time means the period from the beginning to the end of rewinding sequence. This value depends on the tape
length and the position of the head along the tape.
Rewind Time is less than 80 seconds, when a 150 meter tape is loaded.
2. 3. 6 Search Time
Search Time means the period for the drive to find the position that is required by a command. This time also depends
on the tape length and the position of the head along the tape.
Search Time is less than 90 seconds, when a 150 meter tape is loaded.
2. 3. 7 Unload Time
Unload Time means the period from the beginning of the unload sequence caused by Unload Command or Eject button
to the time when a cassette is ejected from the slot.
Unload Time does not include Rewind time.
Unload Time is less than 20 seconds (for a single partition tape).
2. 3. 8 Error Rate
The uncorrectable bit error rate is expected to be less than 10
-15
. For further details, refer to “Designing a Data Storage
Format for Digital Audio Tape (DAT)”, produced by the DDS Manufacturers Group.
2. 3. 9 Retry Limits on Rewrites
For Read-After-Write error correction, each frame can be rewritten up to a maximum of 255 times giving 256 writes of
the frame. With N-Group writing, where every group is written a fixed number of times, the upper limit is 8.
N-Group writing is not supported by DDS-3 and DDS-4.
2. 3. 10 Definition of Failure
A failure is defined as any permanent malfunction of the drive that prevents the user from retrieving data from tape. This
includes failure to power up, failure to unload or eject a cassette, or failure to write and read data to and from the tape,
providing that both the drive and tape are being used within specification.
Faults are not considered failures when they are related to operator error, mishandling and abuse, system-related faults
(cabling problems, unsupported systems, operating software, and so on), no trouble found, and transportation damage.
2. 3. 11 Mean Time Between Failures
The Mean Time Between Failures (MTBF) for the SDT-10000/SDT-11000 is 250,000 power-on hours, assuming a duty
cycle of 40%, where:
Duty cycle = × 100
Tape Motion Time
Power-on Time
12.5% is assumed as a typical usage level.
2. 3. 12 Mean Time To Repair
The Mean Time To Repair (MTTR) of the SDT-10000/SDT-11000 is 30 minutes. Since at the field level the entire drive
is considered a Field Replaceable Unit (FRU) the time to replace the drive with a new one is less that 30 minutes.
SONY SDT-10000/SDT-11000 DDS Tape Drive
2 - 7
2. SPECIFICATION
2. 3. 13 Component Life
The specified life of the SDT-10000/SDT-11000 is 8 years average.
The usage model for this specification is as follows.
3 hours tape pulling time per day
6 days usage per week
The SDT-10000/SDT-11000 is equivalent to 7,500 hours tape-pulling life.
2. 3. 14 Durability
The durability of the components in the SDT-10000/SDT-11000 will exceed the number of operations listed on the
following table:
Start/Stop400,000 times
Reposition3,000,000 times
Thread/Unthread10,000 times
Load/Eject10,000 times
2. 4 SAFETY
The SDT-10000/SDT-11000 conforms to the following safety standards:
•Underwriters Laboratories, Inc.
UL 1950 (Third Edition), Safety of Information Technology Equipment, Including Electrical Business Equipment.
•Canadian Standards Association
CSA-C22.2 No. 950 (CUL), Safety of Information Technology Equipment, Including Electrical Business Equipment.
•TUV
EN 60950: 1992 + A1 + A2 + A3 + A4 + A11 Safety of Information Technology Equipment, Including Electrical
Business Equipment.
•CE Mark
2. 4. 1 Conditions of Acceptability
The SDT-10000/SDT-11000 is for use only in equipment where the suitability of the combination has been determined
by an appropriate certification organization (for example, Underwriters Laboratories, Inc. or the Canadian Standards
Association in North America, and the British Standards Institution or Verband Deutscher Elektrotechniker in Europe).
Other considerations include the following:
1. An enclosure must be supplied to limit the operator’s access to live parts, to provide system stability, and to
furnish the drive with the necessary grounding integrity.
2. The necessary voltage supplies must be provided. These supplies are Extra Low Voltage SEC for UL and CSA,
or Safety Extra Low Voltage for BSI, VDE, and so on, of +5V and +12V DC.
2 - 8
SONY SDT-10000/SDT-11000 DDS Tape Drive
2. SPECIFICATION
2. 5 INSTALLATION REQUIREMENTS
2. 5. 1 Power Requirements
SDT-10000/SDT-11000
Voltage
5V +/-5%
12V +/-10%
Max Ripple
100 mV p-p
100 mV p-p
Current
Maximum
(Load/Unload)
2.0 A
1.6 A
Typical
(Write/Read)
1.0 A
0.3 A
SONY SDT-10000/SDT-11000 DDS Tape Drive
2 - 9
3. INSTALLATION
5
5
5
5
5
5
5
3. 1 SCSI Connection/Setting the SCSI ID ..................................................................... 3-1
3. 1. 1 SCSI ID Number Jumper ............................................................................. 3-2
3. 2. 1 Termination Power Switch.......................................................................... 3-4
3. 2. 2 Data Compression ON switch .................................................................... 3-5
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234
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234
3. Installation
3 INSTALLATION
3. 1 SCSI CONNECTION/SETTING THE SCSI ID
Pin 34
Pin 68
SCSI 68 pin connector (Non-Shielded)
SCSI ID
321
SCSI ID
0
P.E.
R.
0
35
1
power connector
4321
GNDGND12V5V
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Parity Enable
Jumpers
Reserved
SCSI ID 3
Parity
Disable
Note :
SCSI ID 2
SCSI ID 1
Enable
SCSI ID 0
= CLOSE/Jumper
= OPEN/Jumper not installed
Don’t care
15
SONY SDT-10000/SDT-11000 DDS Tape Drive
3 - 1
3. Installation
3. 1. 1 SCSI ID Number Jumper
The SCSI ID number of the SDT-10000/SDT-11000 is selected by the SCSI ID number jumpers. The figure below
shows the jumper configuration for each of the possible SCSI IDs.
: = OPENJumper not installed
| = CLOSEDJumper installed
3. 1. 2 Party Enable Jumper
Parity check function can be disabled by jumper. Parity check is disabled while left end jumper is installed. Parity
generate function is always enabled.
ParitySetting
Enable|
Disable:
: = OPENJumper not installed
| = CLOSEDJumper installed
3. 1. 3 Power Connector
The power connector is illustrated as Figure 3-1
4321
3 - 2
GNDGND12V5V
Figure 3-1: Power Connector
SONY SDT-10000/SDT-11000 DDS Tape Drive
3. Installation
3. 1. 4 SCSI 68 pin Connector
Figure 3-2 illustrates SCSI 68 pin connector, and table 3-1 shows the assignments for the pins of the connector.
Pin 34
Pin 68
1
35
Figure 3-2: Non-shielded SCSI Device Connector
SDT-11000 supports Low-Voltage-Differential SCSI configuration as shown table 3-1. SDT-10000 and SDT-11000
support Single-Ended SCSI configuration as shown table 3-2. SDT-11000 detects and switches SCSI configuration
between Low-Voltage-Differential and Signal-ended modes by monitoring DIFSENS signal assigned pin 16 SCSI bus.
(refer to table 3-1)
Table 3-1: SDT-11000 SCSI Signals (Low-Voltage-Differential Type BUS P Cable Signal Assignment)
4 Reserved (OFF)
5 Terminator Power (ON)
6 Reserved (OFF)
7 DC Control-1 (ON)
8 DC Control-2 (OFF)
( ) …default setting
Position 5 of DIP switch is used to set whether SDT-10000/SDT-11000 provides the termination power to pin 17, 18, 51,
52 on SCSI bus, or not.
SONY SDT-10000/SDT-11000 DDS Tape Drive
3 - 5
3. Installation
3. 2. 2 Data Compression ON switch
Data compression can be selected by DIP switch.
DC Control-1DC Control-2
OFFOFF
OFFON
ONOFF
ONON
Table 3-2: Data Compression Switches
Definition
Compression disabled at power-on. The host is allowed to control
compression.
Compression disabled at power-on. The host is not allowed to control compression.
Compression enabled at power-on. The host is allowed to control
compression.
Compression enabled at power-on. The host is not allowed to control compression.
3 - 6
SONY SDT-10000/SDT-11000 DDS Tape Drive
4. OPERATION
5
5
5
5
5
5
5
4. 1 SUMMARY OF LED INDICATIONS........................................................................... 4-1
Illegal FW Tape*Flash code 2*
Front Panel TestSee 4.3.5.1
4 - 2
Table 4-3: LEDs indications for each state
SONY SDT-10000/SDT-11000 DDS Tape Drive
4. OPERATION
4. 2 OPERATOR ACTION
4. 2. 1 Powering up the SDT-10000/SDT-11000
After the initial installation of the SDT-10000/SDT-11000 has been verified, power can be applied to the unit. The
+12V and +5V power must be applied simultaneously. The SDT-10000/SDT-11000 will execute a power-up diagnostic
and then comes ready.
Once the tape has been loaded the SDT-10000/SDT-11000 sends a CHECK CONDITION response on receipt of the
next SCSI command from the host. The UNIT ATTENTION key is set in the returned REQUEST SENSE data to
indicate that the tape may have been changed. (Sense Key/ASC/ASCQ = 06/28/00)
4. 2. 2 Inserting Cassettes
The operator inserts a cassette into the slot on the front panel with the arrow on the cassette pointing towards the drive.
As the cassette is inserted, the drive takes it and automatically loads it into the drive mechanism. The SDT-10000/SDT11000 performs a tape load sequence as described in section 4.3.1.
4. 2. 3 Removing Cassettes
The cassette can be removed from the SDT-10000/SDT-11000 either in response to a SCSI UNLOAD command, or by
pressing the Eject button.
The operator uses the Eject button to initiate the unload sequence (see section 4.3.2). The mechanism winds the tape to
Beginning of Media (BOM), unthreads it, and ejects the cassette from the slot.
Note: Operation of the Eject button is disabled if the host has previously sent a SCSI PREVENT ALLOW MEDIA
REMOVAL command with prevent bit set to one. In this case, pressing the Eject button has no effect, and does
not initiate an Unload sequence. The Eject button returns to normal operation following receipt of a PREVENT
ALLOW MEDIA REMOVAL command with prevent bit clear.
4. 2. 4 Write-Protecting Cassettes
Cassettes can be write-protected by sliding the tab on the back of the cassette open. In this state, data can be read from
the tape but not written to it.
When a Write Protected tape is loaded in the drive the Tape and Status LEDs will be lit. The Busy LED will indicate any
activity on the SCSI bus or mechanical motions in the drive itself.
Caution: The Tape Log, which contains a history of usage of the tape, will not be updated when the cassette is write-
protected. It follows that the Tape Log becomes inaccurate if a cassette is used write-protected, and the media
warning cannot be relied on to indicate that the cassette needs to be copied and replaced.
SONY SDT-10000/SDT-11000 DDS Tape Drive
4 - 3
4. OPERATION
4. 3 INTERNAL FUNCTION
4. 3. 1 The Load Sequence
During load sequence, the following occurs:
1. The drive mechanism accepts the cassette, threads the tape and rewinds to Beginning-of-Media (BOM). The tape is
then moved to Beginning-of-Tape (BOT) and the Reference area is checked to find the tape format (DDS-4, DDS3, DDS-2, DDS and DDS-DC, blank, audio, and so on). If the format is not DDS-4, DDS-3, DDS-2, DDS and DDSDC, the drive rewinds the tape to BOT and awaits either a WRITE, Partitioning MODE SELECT or an
UNLOAD command.
2. The System area is then accessed and the System log read into the drive.
3. Finally the drive goes online.
In the case of two partition tape the drive detects that the tape has been formatted as a two partition tape when the
Reference Area is read. The drive will then automatically position to the beginning of partition 0 before coming on-line.
Partition 0 is the partition that begins the furthest from BOM.
4. 3. 2 The Unload Sequence
The drive will always write any buffered data out to tape followed by an EOD prior to initiating the Unload sequence.
During this sequence the tape is rewound to BOT and, if the tape is write-enabled, the copy of the tape log held in RAM
is written back to tape. The tape is then rewound to BOM and the tape unthreaded from the mechanism. At this stage the
tape is either retained in the drive or ejected, depending on media removal is enabled by the PREVENT ALLOW
MEDIA REMOVAL command.
In the case of two partition tape the drive detects that the tape has been formatted as a two partition tape when the
Reference Area is read during the load sequence. When the Unload operation begins the drive will then automatically
update the Tape Log for each partition before unloading the tape.
4. 3. 3 Power-Fail Handling
If there is a power-fail, the SDT-10000/SDT-11000 performs the following actions, and reverts to its default configuration:
1. The drive remains positioned at the point where the power-fail or SCSI Reset occurred.
2. It executes the Power-Up sequence of self-tests. (When power is restored.)
3. If a tape is in the drive, the SDT-10000/SDT-11000 starts a load sequence.
The drive rewinds the tape to BOT and remains on-line.
4. The drive returns CHECK CONDITION status for the first command after the power-fail or Reset. The next
command from the initiator should be a REQUEST SENSE. The drive will return sense data including a sense key
that will indicate that the drive has been reset. (Sense Key / ASC / ASCQ = 06/29/00)
4. 3. 4 Diagnostic and Normal Status Displays
This chapter describes LED displays while the SDT-10000/SDT-11000 is starting up. When power is turned on, the
SDT-10000/SDT-11000 will go through its diagnostics to reach normal status. When a failure is detected during diagnostics, the LEDs show that the SDT-10000/SDT-11000 is out of order and needs to be repaired.
4. 3. 4. 1 Diagnostic Status Display
The SDT-10000/SDT-11000 starts with its Diagnostic function. This is made up of the Front Panel Test and the Kernel
Test.
4 - 4
SONY SDT-10000/SDT-11000 DDS Tape Drive
4. OPERATION
4. 3. 4. 1. 1 Front Panel Test
LED display sequence:
Busy
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
0.25 sec
Note: This function is for checking BUSY, STATUS and TAPE LEDs and the related circuits. No errors can be gener-
ated as this test is only for operator verification of indicator operation.
on
-
on
-
on
-
-
on
-
-
on
-
-
Tape
on
-
on
-
-
on
-
-
on
-
-
on
-
Status
on
-
on
-
-
-
on
-
-
on
-
-
on
Front Panel
Test
repeat until end of
Power On Diagnostic
4. 3. 4. 1. 2 Kernel Test
After the Front Panel Test, the SDT-10000/SDT-11000 checks its internal units.
Note: If a failure is detected, the SDT-10000/SDT-11000 displays the Failed Unit. Refer to section 4. 3. 4.
When a Diagnostic error occurs, the SDT-10000/SDT-11000 must be powered off. The SDT-10000/SDT-11000 will
not work and should be checked or repaired immediately.
Note: The purpose of the diagnostic firmware is to test the SDT-10000/SDT-11000 electronics for functionality. If the
diagnostic request comes from the host through SCSI, then the results are reported through SCSI.
If the electronics are not functioning, the diagnostic firmware tries to isolate the non-functional area to a specific Failed
Unit. Given a failure, the firmware decides on an hierarchical basis which Unit to designate as the Most Suspect Failed
Unit (MSFU). The confidence in this decision is intended to be 95%. The MSFU is identified and displayed on the front
panel as shown above section 4. 3. 4. For the details of Diagnostics, see section 7.
SONY SDT-10000/SDT-11000 DDS Tape Drive
4 - 5
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