Technical information

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For the latest product & technical information, refer to the Information Sources on pages 2 and 3.
Updated 10/02/01
TAPE ATTRIBUTES
1. To determine cable requirements, note the tape drive’s SCSI interface, the appropriate SCSI controller from the system configurator section and the desired enclosure then refer to
Appendix D: Cables - Storage Units - Controllers. For installation of an internal tape drive into a server, see the appropriate system section.
2. Data compression typically provides a 2X improvement in capacity and transfer rate, but since data compression is affected by many factors, actual improvements may be more or less
than 2X.
3. LVD support for LVD devices installed in a NetMEDIA Storage Expansion Unit EL (P/N 3551001) requires replacement of the standard single-ended internal cables with one or more
(depending on configuration) cables from Media Bay Tray and LVD Cable Kit (P/N 10K2340) which contains a single two-drop multi-mode terminated cable. If the standard cables are
used for attachment to LVD devices, single-ended SCSI rules and bus speeds apply.
4. Requires 68-pin External Multimode LVD/SE SCSI Terminator (P/N 00N7956).
5. Netfinity Two-Drop Internal SCSI Cable (P/N 36L9636) is a single-ended wide two-drop terminated cable.
6. Media Bay Tray and LVD Cable Kit (P/N 10K2340) includes an internal two-drop multi-mode terminated LVD SCSI cable.
7. If installed in a rack, a fixed shelf is required.
8. Black desktop 133mm (5.25in) half-high (HH) tape enclosure. Connector is configurable as 50-pin Centronix or 68-pin high density. Requires either tape drive self-termination or 68-pin
External Multimode LVD/SE SCSI Terminator (P/N 00N7956).
9. NetMEDIA Storage Expansion Unit EL (P/N 3551001) is a black 3U, 19in rack or NetBAY3/3E mountable tape enclosure which includes two full high (FH) or four half-high (HH) ex tended
length 5.25” bays, two external 0.8mm VHDCI connectors and two internal four-drop single-ended terminated 16-bit SCSI cables for device attachment. Two power supplies and two
power cords are also included. Tip: The front rail clips will need to be reversed and screwed in from behind to secure the unit in a 930842x rack.
10. NetMEDIA Systems Management Adapter (P/N 10L7113) may be installed in a 3551001 to provide repeater function, LVDS interface, aggregate cable lengths up to 12M when attached
to an LVD SCSI controller, and auto-termination when the 3551001 is powered off. External connector is 0.8mm VHDCI.
11. Black desktop or 3U rack tape enclosure supports 133mm (5.25in) full-high LVD tape devices including DLT technology. Requires a fixed shelf if installed in a rack (allow additional 1U
for fixed shelf). Replaces 3503B0X Tape Enclosure. Supports the following full-high tape options: 00N8015, 00N8016, 00N7992, 00N7990.
12. Tape library attributes and prerequisites are located in Appendix B: Tape Library Attributes.
13. A combination data/clean cartridge cleans the drive each time the data cartridge is used.
Note: Tape support varies by system depending on internal bay availability, SCSI cabling type, number of cable drops, existence of a RAID controller and availability of a suitable
external enclosure. The following general rules should be followed.
a) Tapes are not supported for attachment to RAID controllers.
b) Single-ended (non-LVD) devices may be attached to internal multi-mode terminated cables. The entire SCSI bus will be limited to single-ended operation with a maximum bus speed
of Ultra-SCSI.
c) LVD devices attached to single-ended terminated cables will operate in single-ended mode with a maximum bus speed of Ultra-SCSI.
Internal SCSI Cables and Optional SCSI Adapters
Most systems support the following SCSI adapters for use with tape. Consult the I/O Options table in the system sections for specific system support. Where tapes are supported internal
to the system, the cables which ship with the adapters are supported for tape attachment. Some restrictions may apply based on cable and tape type which are explained in the note
above.
Part Number Description Cable Description External Connector
02K3454 PCI Fast/Wide Ultra SCSI Adapter Four-drop, single-ended terminated, 16-bit 68-pin high density
19K4 646 PCI Wide Ultra160 SCSI Adapter Five-drop, multi-mode terminated 0.8mm VHDCI
36L9636 Netfinity Two-Drop Internal SCSI Cable Two-drop, single-ended terminated, 16-bit -
10K2 340 Media Bay Tray and LVD Cable Kit Two-drop, multi-mode terminated
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