IBM i Series, Руководство пользователя

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Externally Attached Automated Libraries
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Externally Attached Automated Libraries
Drive Unit can be field upgraded to a 3494-D12, which can support 3590-B1A tape drives by
specifying #5302. Both the #5400 and #5300 units are supported on the 3494-L10 and L12
Library Control Units.
Additional frames can be attached to the 3494 Model L10 or L12 in any combination of drive
units and storage units, as long as the maximum of seven additional frames is not exceeded.
This provides storage capacity for up to 3,040 ½-inch cartridges (7.3T if 3490E cartridges or
91.2T with 3590-B1A cartridges), and support for up to 32 3490-CxA tape drives, or up to 32
3590-B1A tape drives. Both 3490 and 3590 tape drives can be used in the same 3494 Tape
Library Dataserver.
The 3494 Tape Library Dataserver Models L10 and L12 attach to the iSeries or AS/400e
server using an RS 232 Host Attachment (#5211 for a 50-foot attachment or #5213 for a
400-foot attachment) or using a LAN attachment (#5219 for Token Ring or #5220 for
Ethernet). Each system attached to a 3494 Tape Library Dataserver must have an RS232
Host Attachment specified to obtain the licensed code for the Media Library Device Driver
(MLDD). The 3494 Tape Library Dataserver can also attach to the IBM RISC System/6000,
the IBM ES/9000, Power parallel SP2, and Sun processors.
An Expansion Attachment Card (#5229) is required to support the fifth to eighth RS232
connections or the fifth to eighth tape control unit. The number of tape control units that can
be attached to the 3494 Model L10 or L12 has been doubled to support up to 32 tape control
units.
The 3494 Model HA1 is supported by the iSeries or AS/400e server beginning at OS/400
V4R4. The 3494 Model HA1 includes a second library manager and accessor, two service
bays, and required hardware, and is designed for concurrent maintenance. The Model HA1
operates in standby mode to provide a redundant library manager and accessor or improved
availability. With the Dual Active Accessor (DAA) feature active on the 3494 Models L10, L12,
or L14, both accessors can operate simultaneously to increase mount performance of the
library. With two library managers and dual accessors, and each containing two disk drives
for duplication of the library databases, maintenance can now be performed in most
situations on the failing library control unit component while the 3494 is still available for
customer production. The Model HA1 contains no storage cells for tape cartridges. The
3494-HA1 can be installed on 3, 4, 6, 8, 10, 12, and 16 frame configurations
To expand the number of tape control units that can be attached to the Library Manager, the
Tape Control Unit Expansion feature, the #5228, should be specified. One feature can
convert four RS232 host processor connections into four tape control unit connections in
either the Library Manager or the Expansion Attachment Card (#5229). When combined with
other interface features, up to 32 tape control units can be connected to the Library Manager.
If all RS232 host processor connections are converted to tape control unit connections, a
LAN adapter card is required to provide the host processor connection as shown in the
following table.