Sunstar Company, Inc.

800.663.5523

Legacy Tape Drives

Overland L490E 36 / 18 track autoloader

2483

 


The L490E: 18-Track for Interchange, 36-Track for Backup, All in One Drive
In the past, having compatibility with all IBM formats required buying two drives: one for reading and writing 18-track tapes, and another for reading and writing 36-track tapes. This created an extra cost burden, not only when the drives were purchased, but also during their operational life, because both of them had to be maintained.That’s all changed with the introduction of the L490E. For the first time, one drive reads and writes all three industry-standard half-inch cartridge formats: IBM 18-track 3480/3490, and IBM 36-track 3490E. The L490E reads and writes both native and compressed modes, featuring IBM IDRC-compatible data compression.

The 18-track tapes written by the L490E can be read by any IBM
3480/3490-compatible 18-track drive. This capability comes at no additional cost.

Advancing the State of the Art

The L490E MiniLibrary incorporate many significant improvements in half-inch tape drive design. Both drives feature the very latest technology in read/write electronics, tape guidance, cartridge loading, serviceability and reliability.

L490E’s Exclusive 18-track Write with a 36-Track Head

The L490E only needs one tape head to write both 18-track and 36-track tapes. To ensure the highest possible data integrity when writing 18-track data with the tape head’s narrower tracks, the drive uses an AC erase bar located in front of the tape head. Old data on a tape is magnetically erased by the bar before new data is written. Extraneous signal is eliminated, improving the signal-to-noise ratio when the data is written and later read by any IBM 3480/3490-compatible drive.

Innovative Tape Path Protects Tape and Data
Gentle, Reliable Tape Guidance System

The L490E’s tape guidance system minimizes tape wear and offers improved reliability by employing hydrodynamic tape chutes in the tape path.

As tape is accelerated to full speed, it draws in air underneath it,
lifting it from the tape chute surface and allowing it to stream freely.
Nothing touches the moving tape but the edge guides, ensuring precise
alignment for accurate reading and writing. Tape wear is substantially
reduced, and long term data integrity is preserved.

Because the L490E use hydrodynamic tape chutes, no air bearings are required. This eliminates the need for one of the most failure-prone tape drive components, the air compressor.

The surface of the tape chutes is made of an advanced ceramic-blend
material. This material is very hard and low-friction, providing superior
protection from tape wear over time. This has been proven by extensive tape life testing.

In fact, the L490E’s hydrodynamic tape chutes have been proven to protect tapes well beyond ANSI requirements. The L490E offer this superior tape handling without requiring the complex arrangement of parts used by other designs.

Advanced Tape Loading System
10-Cartridge Autoloader is Already Built-In

The L490E’s 10-cartridge automatic cartridge loader (ACL) is
integrated inside the drive enclosure, not an external add-on. Instead of using a cartridge stacker that moves a magazine, the L490 and L490E use a robotic loader to select, load and replace cartridges in stationary slots.

This design offers two important benefits over external stacker loaders.
First, since the auto-loading system is completely integrated with the
drive, the total assembly fits into a 24 inch (61 cm) deep cabinet. No
extra space is required outside the cabinet for a moving magazine.

Second, the robotic ACL sets a new standard for loading system reliability. Its design is a model of simplicity and durability. All movement of the loader is accomplished with two sturdy lead screws.

Radial-Arm Reduces Tape Threading to a Simple Operation

While other cartridge drives accomplish tape threading with complex
mechanisms, the L490E thread tape in one sweeping motion, with only a radial swinging arm and one small motor. This elegant design is more dependable than other tape threading systems.

Built-In Cleaning Cartridge

The L490E feature a built-in cleaning cartridge hidden away in an 11th slot. No more trying to find the mis-placed cleaning cartridge. It’s always available. Just initiate a cleaning cycle from the front panel
controls and the drive will automatically retrieve the cleaning cartridge,
clean the heads and return the cartridge to it’s hidden slot.

Designed for Ease of Use and Integration

The L490E were designed from the beginning to be user-friendly and easy to integrate into the workplace.

Drive Status is Instantly Available at a Glance

The L490E’s clear, bright 16-character LCD displays current drive status at all times, showing which cartridge is loaded and its format, when the drive is unloaded, and when the drive door is open.

See-Through, Locking Drive Door

The drive door is made of grey-tinted polycarbonate, letting the user see the cartridges inside. As an added convenience, the drive door features a locking latch should the user wish to restrict access to the cartridges.

Easy-To-Use Control Panel

Three large, clearly-marked buttons handle all tape functions. Two LED
indicator lights and the 16- character LCD display guide the user through all operations. The LED’s are bright enough to be read from across a room for quick status verification.

Quiet Operation

Because the L490E don’t require an air compressor, the drives runs very quietly, making them ideally suited for the office as well as the computer room.

Three Configurations to Choose From

The L490E comes in either a floor-standing tower, a horizontal
desktop, or a standard 19-inch rackmount configuration, allowing them to be used in all types of work environments and applications.

Low Power

The L490E is economical to operate, consuming only 150 Watts. It’s autoranging power supply adjusts to all standard line voltages, allowing them to be operated anywhere in the world without modification.

Fast Performance on Numerous Computing Platforms

The  L490E comes with a single-ended Fast SCSI-3 or differential Fast SCSI-3 interface. With Fast SCSI-3, the L490E burst data at up to 10 MB per second. The SCSI interface, coupled with the L490E’s standard 4 MB buffer, offers the user excellent data transfer performance in a variety of applications.

Compatible with Popular Hardware and Software

The L490E connect to numerous hardware platforms. Both drives are also supported by many popular backup and Hierarchical Storage Management (HSM) software packages. Contact Overland Data for the most current compatibility listing.

No Drive Has Ever Been Easier to Service

All of the L490E’s parts and assemblies are easy to access,
service, and replace. In most cases, a simple screwdriver is all that’s
needed to perform service.

The side access panel can be detached from the drive by removing just two screws. Two thumb screws then release the three hinged main circuit boards, which swing out of the drive for easy access to both sides of each board. Rotating all three boards forward exposes the cooling fan and power supply. Remove three more screws, and a protective plate slides out to reveal the deckplate and tape path, including the tape guides, tape head and take-up reel.

A New Standard for Reliability

The L490E is designed to deliver years of trouble-free service at an unrestricted duty cycle. Modern electro-mechanical design is used throughout. The tape path and loading system feature simplified designs, and all mechanical assemblies boast significantly reduced parts counts. In addition, loading and transport power electronics are integrated into one board, as are read and write electronics, reducing the number of interconnects required.

All of these measures contribute to making the L490 and L490E two of the most reliable IBM-compatible half-inch cartridge drives available..

TapeXpress L490e

 Meets the demands of shrinking backup windows High-speed data retrieval Network backup of critical data Mainframe to UNIX and network interchange Protects critical corporate data applications

A MiniLibrary Designed For Your Needs
Using IBM format-compatible half-inch cartridge tape in your data center has never been easier or more cost-effective. The L490E offers 18-track for interchange, 36-track for backup, all in one drive.

Read And Write Both 18- And 36-Track With One Drive
For the first time, one drive reads and writes all three industry-standard half-inch cartridge formats: IBM 18-track 3480/3490, and IBM 36-track 3490E. The L490E reads and writes both native and compressed modes, featuring IBM IDRC-compatible data compression.

Full Connectivity With Major Backup And HSM Packages
Whatever backup packages you use, it’s easy to integrate the L490E. Broad native driver support is further enhanced by 8mm and DLT emulation.

High-Performance For The Shrinking Backup Window
With 3 MB/second standard on the L490E, you can back up your data at a rate of 11 GB/hour. Add Fast/Wide SCSI and your burst data rate explodes to 20 MB/second.

Reliable, Field-Proven Tape Path Design And Components
Trouble-free operation is a proven hallmark of the entire L490E tape path and critical mechanical components and assemblies.

Advanced Tape Loading System
The L490E’s 10 cartridge Automatic Cartridge Loader (ACL) is integrated inside the drive enclosure, not an external add-on. Instead of using a cartridge stacker that moves a magazine, the L490E uses a robotic loader to select, load and replace cartridges in stationary slots. The total assembly fits into a 24 inch (61 cm) deep cabinet. No extra space is required outside the cabinet for a moving magazine. And, the robotic ACL sets a new standard for loading system reliability. Its design is a model of simplicity and durability.

Advanced Design
The L490E incorporates many significant improvements in half-inch tape drive design and features the latest technology in read/write electronics, tape guidance, cartridge loading, serviceability and reliability.

Protecting Your Storage Investment
Overland’s more than 15 years of experience in providing business-critical tape storage solutions provides reliability and service you can depend on. Manufacturing interchange, backup and archival storage solutions, Overland meets the needs of IT professionals in industries worldwide.

Specifications


Drive and Media

Drive

IBM-compatible 3490E

MiniLibrary cartridge loader

Integrated robotic loading system with 10 cartridge stationary magazine

Cartridge access

Sequential or random

Tape type

.5 inch chromium dioxide

Tape length

540/1,100 ft. (164.6/335.3 meters)

Media type

IBM-compatible Cartridge System Tape
IBM-compatible Enhanced Capacity Cartridge System Tape
Magazine size
10 cartridge

System Performance

Tape speed

2 meters/second

Transfer rate, sustained

3 MB/second uncompressed

Transfer rate, burst

20 MB/second

Buffer

4 MB standard

Nominal rewind time

5 seconds (45 maximum in 18-track mode)

Nominal load/unload time

15 seconds maximum

Data Organization

Recording format

36-track ANSI extended magnetic tape format, parallel

Backward compatibility

Read/write 18-track

Compression mode

IBM IDRC-compatible

Recording density

37,871 BPI

Tape path

Hydrodynamic tape chutes

Read/write head

36-track thin film write/MR type

Native capacity

800 MB/cartridge
8 GB on 10 cartridges
Capacity with compression
2.4 GB/cartridge
24 GB on 10 cartridges
Block length
64 KB maximum

System Reliability and Data Integrity

MTBF

35,000 hours continuous operation

Head Life (R/W head)

5,000 tape motion hours

Design life

5 years

Mean cycles between failures

150,000

Error correction

Reed Solomon ECC

Hard Error Rate

1 x 1013 bytes read

Undetected error rate

1 x 1017 bytes read

Warranty

2 year RTF standard

Interface

Supported Interfaces

Fast SCSI-2, S/E, asynchronous/synchronous
 
Fast SCSI-2, Diff., asynchronous/synchronous
 
Fast/Wide SCSI-2, Diff.

Physical Dimensions

TOWER

RACKMOUNT

DESKTOP

Height

19.12″; – 48.56cm

6.97″; – 17.7cm

6.97″ – 17.7cm

Width

6.97″ – 17.7cm

17″ – 43.18cm

18.1″ – 45.97cm

Length

24.1″ – 61.21cm

24.05″ – 61.1cm

24.05″ – 61.1cm

Weight

65 lb – 29.5 kg

60 lb – 27.2 kg

60 lb – 27.2 kg

Power Consumption (assumes units are fully configured)
Voltage 115/240 VAC Auto-Switching
Line Frequency 50/60 Hertz
Amperage 2.8/1.7 A
Wattage 322/408

BTUs/Hr.

1099/1392

 

 

 

T490EW – Fast/Wide Desktop SCSI-SE 103427-001
T490EW – Fast/Wide Desktop SCSI-Diff 103249-001

L490EW – Fast/Wide Tower SCSI-SE 103428-001
L490EW – Fast/Wide Tower SCSI-Diff 103235-001

L490EW – Fast/Wide Rackmount SCSI-SE 103429-001
L490EW – Fast/Wide Rackmount SCSI-Diff 103236-001

L490EW – Fast/Wide Desktop SCSI-SE 103430-001
L490EW – Fast/Wide Desktop SCSI-Diff 103237-001