Scalable modular data storage system

• US 6,148,352 A
• Filed: 12/24/1997
• Issued: 11/14/2000
• Est. Priority Date: 12/24/1997
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Coale, Jerry Lee, VanGundy, Steven
• Primary Examiner(s): Sheikh, Ayaz R.
• Assistant Examiner(s): DHARIA, RUPAL
• Application Number:
  US08/997,962
• Time in Patent Office: 1,056 Days
• Field of Search: 361/727, 361/725, 395/280, 395/281, 710/100, 710/101, 710/103
• US Class Current: 710/100
• CPC Class Codes: G06F 1/181 Enclosures for portable computers G06F1/1613
• CPC Class Codes: G11B 33/125 the apparatus comprising a plurality of recording/reproducing devices, e.g. modular arrangements, arrays of disc drives
• CPC Class Codes: G11B 33/126 Arrangements for providing electrical connections, e.g. connectors, cables, switches

Abstract

A storage system is provided for storing data for a computer system where the storage capacity can be incrementally increased without disrupting the operations of the storage system. The storage system comprises a base unit, and a plurality of modular units. The modular units are inserted into the system as increased storage capacity is required. Each modular unit has an enclosure comprising top, bottom, and side walls. The bottom and top walls each have at least one power connector and data transmission connector. The bottom wall of a first modular unit enclosure attaches to the base unit enclosure and the top wall of the first modular unit enclosure can attach to the bottom wall of a second modular unit enclosure. At least one back plane is provided in each modular unit for providing attachment for a set of storage devices. A data transmission interconnect system is provided for transmitting data and commands between the plurality of storage devices in the modular units and an external source, such that in the event of a loss of connection to any one set of storage devices data and commands can still be transmitted from and to any other set of storage devices.

Claims

1. A storage system for storing electronic data used by a computer system, the storage system comprising:

a base unit comprising an enclosure, and a power source further comprised of at least two power supplies;

a plurality of modular units, each modular unit comprising an enclosure, a power connection system, a data transmission connection system, and a set of storage devices wherein a bottom wall of a first modular unit enclosure interfaces with a top wall of the base unit enclosure and a top wall of the first modular unit enclosure interfaces with a bottom wall of a second modular unit enclosure, wherein at least one modular unit is connected to the power source in the base unit through an adjacent modular unit;

a plurality of sets of storage devices, at least one set of storage devices positioned within each modular unit, each storage device having a storage media on which data is stored;

a plurality of backplanes wherein at least one back plane is positioned within each modular unit providing attachment for a set of storage devices to the power connection system and the data transmission connection system in the modular unit system,

a data transmission system composing serial buses configured according to a Serial Storage Architecture for transmitting data and commands between the sets of storage devices in the modular units and the computer system, such that in the event of a loss of a connection between any one set of storage devices, data and commands can still be transmitted from and to any other set of storage devices; and

a power supply system connecting each modular unit to the power source in the base unit providing power for the storage devices in each modular unit,

wherein the storage devices in each modular unit are interconnected through the data transmission system and power supply system such that at least one new modular unit can be added to the storage system to increase storage capacity without disrupting operations of the storage system.

2. A storage system for storing electronic data used by a computer system, the storage system comprising:

a base unit comprising an enclosure, and a power source;

a plurality of modular units, each modular unit comprising an enclosure, a power connection system, a data transmission connection system, and a set of storage devices wherein a bottom wall of a first modular unit enclosure interfaces with a top wall of the base unit enclosure and a top wall of the first modular unit enclosure interfaces with a bottom wall of a second modular unit enclosure, wherein at least one modular unit is connected to the power source in the base unit through an adjacent modular unit;

a plurality of sets of storage devices, at least one set of storage devices positioned within each modular unit, each storage device having a storage media on which data is stored;

a plurality of backplanes wherein at least one back plane is positioned within each modular unit providing attachment for a set of storage devices to the power connection system and the data transmission connection system in the modular unit system;

a data transmission system for transmitting data and commands between the sets of storage devices in the modular units and the computer system, such that in the event of a loss of a connection between any one set of storage devices, date and commands can still be transmitted from and to any other set of storage devices;

a power supply system connecting each modular unit to the power source in the base unit providing power for the storage devices in each modular unit; and

a fault indicator system, interconnecting the storage devices and an operator status indicator;

wherein the storage devices in each modular unit are interconnected through the date transmission system and power supply system such that at least one new modular unit can be added to the storage system to increase storage capacity without disrupting operations of the storage system.

3. The storage system of claim 2 further comprising a cover unit attachable to a top wall of each of the modular unit enclosures, wherein the operator status indicator is positioned on the cover unit.

4. The storage system of claim 2 further comprising a plurality of fan units in each modular unit and the base unit wherein the power supply system provides power for the fan units.

5. The storage system of claim 2 wherein the power supply system comprises dual power converters in the base unit and dual DC to DC converters in each modular storage unit.

6. The storage system of claim 2 further comprising a controller unit including a processor and memory, the controller unit providing for the management of the storage and retrieval of data in the storage devices.

7. The storage system of claim 2 further comprising dual power supply systems, dual fan systems, dual data transmission systems, and each modular unit contains at least two backplanes connecting two sets of storage devices.

8. The storage system of claim 2 further comprising removable panels on at least one side wall of the modular unit enclosure such that the storage devices and power system components can be serviced, added and removed from the modular unit without removing any modular units from the storage system.