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    • For IBM AS400 Older Models

    IBM Expansions for Older AS/400 Models - PCI-X Towers & Storage Units

    Discover reliable expansion solutions for older IBM AS/400 and early iSeries systems. These PCI-X towers, storage expansion units, and I/O enclosures add disk bays, PCI slots, and I/O capacity to support legacy workloads in OS/400 environments. Designed for rack or tower setups, they connect via SPD, RIO/HSL, or direct attachment for enhanced scalability on classic AS/400 hardware.

    Why Choose Expansions for Older AS/400 Models?

    Older AS/400 systems (e.g., Models 500/510/530, 270, AS/400e 7xx, migration from 640/S30/730) benefit from modular expansions to increase storage and PCI/PCI-X adapter capacity without replacing core hardware. PCI-X towers (0595/5095) provide disk bays and slots, while storage units (505x series) add high-capacity disk options. These expansions support Ultra SCSI/Ultra2 SCSI interfaces, hot-swap where applicable, and integrate via SPD or RIO/HSL for redundancy and growth. Ideal for maintaining legacy OS/400 applications requiring expanded I/O and storage.

    Available IBM Expansions for Older AS/400 Models

    • IBM 0595 PCI-X Tower Unit in Rack Feature Code: 0595 Racked version of 5095 PCI-X tower. Holds 12 disk units and 7 PCI slots. Provides scalable storage and I/O expansion for older AS/400 and iSeries systems.
    • IBM 5095 PCI-X Expansion Tower Feature Code: 5095 Stand-alone PCI-X expansion tower. Holds 12 disk units and 7 PCI slots. Compatible with older AS/400 models for adding I/O and storage capacity.
    • IBM 5051 Storage Expansion Unit Feature Code: 5051 8-disk slot expansion unit for system unit. Compatible with Models 500 and 510. Adds disk capacity for legacy storage needs.
    • IBM 5052 Storage Expansion Unit Feature Code: 5052 16-disk slot expansion. Compatible with Models 500, 510, 530 or towers like #5070/#5072. Ideal for increasing storage in older iSeries/AS/400 environments.
    • IBM 5055 Storage Expansion Unit Feature Code: 5055 8-disk slot expansion for Ultra SCSI disk units. Supports legacy storage growth on compatible AS/400 models.
    • IBM 5057 Storage Expansion Unit Feature Code: 5057 16-disk slot unit, often paired with #5077 Migration Tower II. Provides substantial storage expansion for migrations from Models 640, S30, 730.
    • IBM 5058 Storage Expansion Unit Feature Code: 5058 16-disk slot expansion with battery backup unit. Enhances reliability for storage-intensive legacy workloads on Models 500, 510, 530.
    • IBM 5065 Storage/PCI Expansion Tower SPD Feature Code: 5065 Combined storage/PCI tower with 45 disk slots and 12 PCI slots. Supports Ultra2 SCSI for high-capacity legacy expansions on AS/400e 7xx models.
    • IBM 5074 PCI Expansion Tower HSL Feature Code: 5074 PCI expansion tower with 45 disk slots, 14 PCI slots, and two removable media bays. HSL-attached for high-performance I/O on compatible older models.
    • IBM 5075 PCI Expansion Tower Feature Code: 5075 PCI expansion tower with 6 disk slots and 7 PCI slots, includes 32MB PCI IOP. Compact I/O addition for Model 270 and similar legacy systems.
    • IBM 0588 PCI-X Expansion Unit in Rack Feature Code: 0588 Rack-mounted PCI-X expansion unit with 14 PCI-X slots (equivalent to #5088 in #0551 rack). Adds adapter capacity for older AS/400 systems.

    Note: These expansions primarily use PCI-X, SPD, and Ultra SCSI/Ultra2 SCSI technology. Compatibility varies by model (e.g., Models 500/510/530, 270, AS/400e 7xx). Always verify exact cable/controller requirements for your specific legacy AS/400 model.

    Compatibility & Support

    These expansions are compatible with older IBM AS/400 and early iSeries systems, including but not limited to Models 500, 510, 530, Model 270, AS/400e 7xx series, migration from Models 640, S30, 730, and compatible racks, towers, and configurations.

    Refer to individual product pages for exact connection requirements, supported adapters/drives, OS/400 support details, and installation notes. All items include a 60-day limited warranty.

    • IBM 0588 PCI-X Expansion Unit in Rack
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      IBM 0588 PCI-X Expansion Unit in Rack

      IBM 0588 PCI-X Expansion Unit in Rack 14 PCI slots IBM 0588 is the equivalent of a #5088 PCI-X Expansion Unit, but the #0588 is mounted in a #0551 rack. An #0588 is eight EIA units high and has 14 PCI-X slots for PCI IOPs and IOAs. Disk units and...

      $450.00
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    • IBM 0595 PCI-X Tower Unit in Rack
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      IBM 0595 PCI-X Tower Unit in Rack

      IBM 0595 PCI-X Tower Unit in Rack Holds 12 disk 7 PCI slots IBM 0595 is the racked version of the #5095 PCI-X Expansion Tower which provides I/O capability for iSeries systems. The #0595 has identical functional capabilities to the #5095. The...

      $650.00
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    • IBM 5052 Storage Expansion Unit
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      IBM 5052 Storage Expansion Unit

      IBM 5052 Storage Expansion Unit 16 disk slots IBM 5052 provides space for up to 16 disk units and can be used on the system units of Models 500, 510, and 530, or on expansion tower features #5070, #5072, #5080, and #5082. Installed #5051, Storage...

      $1,500.00
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    • IBM 5055 Storage Expansion Unit
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      IBM 5055 Storage Expansion Unit

      IBM 5055 Storage Expansion Unit 8 disk slots IBM 5055 provides space and controls for up to eight Ultra SCSI disk units on the system unit. The configurator will specify #5055 as the first storage expansion unit if eight or less disk units (not...

      $1,500.00
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    • IBM 5057 Storage Expansion Unit
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      IBM 5057 Storage Expansion Unit

      IBM 5057 Storage Expansion Unit 16 disk slots IBM 5057 provides space for up to 16 disk units on the #5077 Migration Tower II. #5057 is shipped on new order #5077s when migrating from Models 640, S30, and 730, which do not have a #5055. When...

      $2,000.00
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    • IBM 5058 Storage Expansion Unit
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      IBM 5058 Storage Expansion Unit

      IBM 5058 Storage Expansion Unit 16 disk slots IBM 5058 is provides space for up to sixteen disk units when attached to the #5073 or #5083 expansion towers on Models 500, 510, and 530. The #5058 includes a battery backup unit that is placed...

      $2,000.00
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    • IBM 5065 Storage/PCI Expansion Tower SPD
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      IBM 5065 Storage/PCI Expansion Tower SPD

      IBM 5065 Storage/PCI Expansion Tower SPD 45 disk slots  12 PCI slots IBM 5065 is installed on AS/400e 7XX models for adding disk units, PCI adapter cards, and up to two removable media units. #5065 supports Ultra2 SCSI disk units.

      $2,000.00
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    • IBM 5072 1063Mbps System Unit Expansion Tower
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      IBM 5072 1063Mbps System Unit Expansion Tower

      IBM 5072 1063Mbps System Unit Expansion Tower Adds SPD cards and disk units (#5052 required when adding disk units). #5072 includes a 1063Mbps optical bus card, various cables (including an optical cable) and the I/O Tower. The I/O Tower includes 13 SPD...

      $2,000.00
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    • IBM 5073 1063Mbps System Unit Expansion Tower
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      IBM 5073 1063Mbps System Unit Expansion Tower

      IBM 5073 1063Mbps System Unit Expansion Tower IBM 5073 adds I/O cards and disk units (#5058 required when adding disk units). #5073 includes a 1063Mbps optical bus card, various cables (including an optical cable) and the I/O Tower. The I/O Tower...

      $2,000.00
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    • IBM 5074 PCI Expansion Tower HSL
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      IBM 5074 PCI Expansion Tower HSL

      IBM 5074 PCI Expansion Tower HSL 45 disk slots 14 PCI slots IBM 5074 is as supported I/O expansion tower that can contain up to 45 disk units, has 14 PCI slots and has two removable media bays.  

      $500.00
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    • IBM 5075 PCI Expansion Tower
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      IBM 5075 PCI Expansion Tower

      IBM 5075 PCI Expansion Tower 6 disk slots 7 PCI slots IBM 5075 can attach to the Model 270 for adding up to six disk units and up to seven PCI IOAs. #5075 includes a 32MB PCI IOP. Optional PCI IOP (#2842) may be added. PCI RAID Disk Unit...

      $1,500.00
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