File system for a plurality of storage classes

Details File system for a plurality of storage classes File system for a plurality of storage classes

1995-06-09

1996-09-03

Ray, Gopal C.

Excavating

395427, 3951832, 371 401, 3642689, 3642692, 364265, 3642653, 364243, 3642384, 3642821, 3642831, 364DIG1, G06F 1100, G06F 1300, G11C 800

Patent

active

055532853

ABSTRACT:
A file system for managing data files for access by a plurality of users of a data processing system that includes internal storage for buffering, external storage, and a file user interface by which the plurality of users request access to data files. A first level, coupled to the file user interface in the internal storage allocates the internal storage for temporary storage of data to be accessed by the plurality of users, and generates requests for transactions with external storage in support of such allocations. A second level is coupled to the first level and the external storage and responds to the request for transactions with the external storage for managing the transactions for storage of data to, and retrieval of data from, the external storage. The second level defines a plurality of physical storage classes which are characterized by pre-specified parameters that allocate data files subject of transactions to locations in external memory. In response to requests for transactions, the second level identifies one of the plurality of storage classes assigned to the data file subject of the transaction and carries out the transaction with the appropriate locations in external memory. At least one of the plurality of storage classes provides for utilization of a plurality of access paths in parallel for transactions involving data files assigned to such storage class. Further, at least one parameter pre-specified for storage classes identifies a level of reliability desired for the subject data files.

REFERENCES:
patent: 3585606 (1971-06-01), Evans et al.
patent: 4038642 (1977-07-01), Bouknecht et al.
patent: 4135240 (1979-01-01), Ritchie
patent: 4344127 (1982-08-01), McDaniel et al.
patent: 4396984 (1983-08-01), Videki, II
patent: 4571674 (1986-02-01), Hartung
patent: 4701840 (1987-10-01), Boebert et al.
patent: 4713753 (1987-12-01), Boebert et al.
patent: 4792898 (1988-12-01), McCarthy et al.
patent: 4803614 (1989-02-01), Bamba et al.
patent: 4851991 (1989-07-01), Rubinfeld et al.
patent: 4860244 (1989-08-01), Bruckert et al.
patent: 4881163 (1989-11-01), Thomas et al.
patent: 4916605 (1990-04-01), Beardsley et al.
patent: 5257367 (1993-10-01), Goodlander et al.

Affiliated with

Also associated with

Rating

File system for a plurality of storage classes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with File system for a plurality of storage classes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and File system for a plurality of storage classes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1959780