Patent US5398158A successfully refreshed from Google Patents.
US5398158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple disk drive module with standard from factor
Assignee: Fujitsu Services Ltd
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Filing: 1993-03-15
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Granted: 1995-03-14
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Expires: 2013-03-15
Abstract
Abstract A disk drive module is described which externally has the physical and electrical appearance of a single standard 5.25 inch disk drive, but which internally contains five 2.5 inch disk drives and the electronics for operating them as resilient disk array. The disk drives are mounted on printed circuit boards which extend substantially the full length of the module. This provides a high data transfer rate and extremely high data reliability, and because the module has a standard form factor, it can be fitted to all types of system that can accommodate this form factor.
Inventors
- 👤 John G. Fisher
- 👤 Stephen Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:58
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/12; G11B33/125
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A disk drive module comprising a housing containing a plurality of printed circuit boards extending substantially the full length of the housing, and a plurality of fixed disk drive units mounted on said printed circuit boards, wherein each disk drive unit substantially conforms to a first standard form factor, and the housing conforms to a second, larger standard form factor, the housing also containing a control circuit for operating the disk drive units as a resilient disk array.
Claim 2
Dependent Claim
78 words
A disk drive module comprising a housing containing a plurality of printed circuit boards extending substantially the full length of the housing, and a plurality of fixed disk drive units mounted on said printed circuit boards, wherein each disk drive unit substantially conforms to a first standard form factor, and the housing conforms to a second, larger standard form factor, the housing also containing a control circuit for operating the disk drive units as a resilient disk array.
Claim 3
Dependent Claim
32 words
A module according to claim 1 wherein the housing has a 5.25 inch disk drive form factor and the individual fixed disk units each have a 2.5 inch disk drive form factor.
Claim 4
Dependent Claim
15 words
A module according to claim 1 containing a multiple of five fixed disk drive units.
Claim 5
Dependent Claim
23 words
A module according to claim 1 wherein the control circuit comprises two independent channels for allowing dual port access to the disk array.
Claim 6
Dependent Claim
74 words
A disk drive module comprising a housing containing a plurality of printed circuit boards mounted within said housing, and a plurality of fixed disk drive units mounted on said printed circuit boards, wherein each disk drive unit substantially conforms to a first standard form factor, and the housing conforms to a second, larger standard form factor, the housing also containing a control circuit for operating the disk drive units as a resilient disk array.
Claim 7
Dependent Claim
74 words
A disk drive module comprising a housing containing a plurality of printed circuit boards mounted within said housing, and a plurality of fixed disk drive units mounted on said printed circuit boards, wherein each disk drive unit substantially conforms to a first standard form factor, and the housing conforms to a second, larger standard form factor, the housing also containing a control circuit for operating the disk drive units as a resilient disk array.
Claim 8
Dependent Claim
32 words
A module according to claim 5 wherein the housing has a 5.25 inch disk drive form factor and the individual fixed disk units each have a 2.5 inch disk drive form factor.
Claim 9
Dependent Claim
15 words
A module according to claim 5 containing a multiple of five fixed disk drive units.
Claim 10
Dependent Claim
23 words
A module according to claim 5 wherein the control circuit comprises two independent channels for allowing dual port access to the disk array.
References Cited (Backward Citations)
US5124886A
Cited
US5211459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |