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An earlier high-performance half-inch magnetic tape technology from IBM. Designated 3590 and enhancing the 3480 line, Magstar provided ESCON and SCSI connectivity to IBM mainframes and midrange systems. Tape libraries were available that held from a handful to thousands of cartridges.

The 3480
In 1984, the 3480 was a breakthrough tape technology, providing more storage in a cartridge than in reels, the common tape housing at that time. In addition, the drives took up half the floor space. In 1995, the new 3590 line was branded Magstar. See Magstar MP, half-inch tape and magnetic tape.

# of    Tape    RawType    Year  Tracks  Length  Capacity3590 Magstar

 3590H   2002   284    320 m    30GB
 3590E   1998   256    300 m    20GB
 3590B   1995   128    300 m    10GB


 3490E   1991    36    300 m   800MB
 3490    1989    18    160 m   400MB
 3480    1984    18    160 m   200MB

Magstar Cartridges
Magstar used a half-inch, single-hub cartridge, while Magstar MP used an 8mm cassette-style cartridge that started mid-tape for faster retrieval. Both used linear recording. See Magstar MP.

L490E Tape Library
This earlier tape library from Overland Data supported 3490 cartridges. Overland Data's tape drives were the first to support multiple cartridge formats. (Image courtesy of Overland Data Inc.)
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References in periodicals archive ?
Except for the 3490, 3590 Magstar, 4mm and 8mm tapes and drives, magnetic media have an established track record of reliability when compared with optical media.
"And the Magstar Tape Library provided us with the price point and speed that EMC doesn't offer."
The entry-level model supports one or two drives with 20 Magstar MP linear-tape cartridges for 300Gb of storage, while the largest model supports up to six drives with 324 cartridges for 4.8Tb of storage.
Meanwhile, IBM has been measuring the performance of its Magstar tape drives against the 9840 models introduced at the end of last year.
The LTO design is derived from the Magstar and has a long history of reliability and performance.
IBM still currently sells StorageTek's Shared Virtual Array disk products under the Magstar name, but entered the market with its own Shark products earlier this month and plans to end the StorageTek OEM relationship by the end of next year.
In addition, IBM Magstar tape products can now connect in a SAN using the IBM SAN Data Gateway, allowing them to support the sharing of tape drives within a SAN.
Currently, the top 20% of high-end AS/400 users - StorageTek's prime targets - are using IBM Magstar drives.
In addition to LTO technology, HIARC also supports the following tape technologies: 4mm (DAT), 8mm, 3480/3490, AIT, DLT, Magstar, MLR, SLR, VHS, D1/D2/D5, and half-inch reel-to-reel.
Plasmon has a range of automated tape library products based on IBM's fast-access MagStar technology and has just launched its own range of half-inch tape storage which is backwards compatible with older traditional tape formats.
VSM was introduced last year, a full year later than IBM Corp's competing Magstar Virtual Tape Server.
IBM 20GB Magstar - The 3590E has 20GB native capacity.