IBM Magstar MP 3570 C Series, Информация по обслуживанию

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3570 Introduction
Product Overview
The IBM 3570 Tape Subsystem is a new family of tape handling products that provide high capacity,
| performance, and reliable tape cartridge processing, in a compact, low cost design. Designed for the
| mid-range systems, the 3570 attaches through the small computer system interface (SCSI) to systems like
| the AS/400, RS/6000, HP-UX, Sun (Solaris) and IBM Netfinity/PC Servers that utilize the SCSI interface.
The IBM 3570 Tape Subsystem, C-Series Models are available in stand-alone and rack-mounted units,
and with drive only models. The stand-alone and rack-mounted units come with a random access
cartridge loader (Library) attachment which allows up to 20 tape cartridges per Library device. Multiple
devices may be added to a single SCSI interface. These library models come with one or two drives.
For more information on models, see “IBM 3570 Tape Subsystem, C-Series Models” on page INTRO-5.
New Technologies Save Time, Are More Reliable
The 3570, like the IBM 3590 High Performance Magnetic Tape Subsystem uses a newly introduced
technology for longitudinal recording. In addition, the 3570 introduces a new, more reliable tape cartridge
configuration that cuts in half the normal data acquisition time. The new technology and cartridge
configuration can significantly increase the performance of longitudinal recording while considerably
improving reliability.
Broad Applications
The Library version of the 3570 can be used to provide low cost high availability of data that is usually
archived or resides on relatively expensive disk media. This application allows backup data to be
available within seconds without the need to have operator intervention and mount delays.
Another use is the automatic backup storage for midrange systems or servers which have large amounts
of disk or need unattended storage capacity for multiple backups.
Tape Cartridge Capacity
The IBM Magstar MP 3570 Tape Subsystem uses a metal particle tape and a new IBM Magstar Fast
Access Linear Tape 3570 cartridge that can store 5GB of non-compacted data. The 3570 tape drive uses
a compaction algorithm which can increase the storage capacity of these cartridge to 15GB.
Data Compression:
The 3570 improved compression algorithm (IBMLZ1) provides highly efficient
compression. The IBMLZ1 algorithm furnishes hardware execution efficiency by using as few machine
cycles as possible to compress or decompress a byte, achieving good coding efficiency for broad
applications, and performing compression without performance loss.
Large On-line Capacity Available:
With 2 magazines of cartridges, each library can provide up
to 300 GB of on-line data capacity with a data access rate of up to 54 GB/hr at maximum compression.
| Dual-drive models C02, C12 and C22 can provide up to double this data access rate (up to 108GB per
| hour at maximum compression.). This, along with the fact that multiple library models may be attached to
one SCSI attachment allows very large on-line storage capability for the cost conscious midrange
computer user.
INTRO
Introduction
INTRO-3