scispace - formally typeset
Patent

A file system for a plurality of storage classes

Reads0
Chats0
TLDR
In this article, a file system for managing data files for access by a plurality of users of a data processing system that includes internal storage (41) for buffering, external storage (44), and a file user interface (I) is presented.
Abstract
A file system for managing data files for access by a plurality of users of a data processing system that includes internal storage (41) for buffering, external storage (44), and a file user interface (I) by which the plurality of users request access to data files. A first level, coupled to the file user interface (41) for temporary storage of data to be accessed by the plurality of users, and generates requests for transactions with external storage (44) in support of such allocations. A second level is coupled to the first level and the external storage (44) and responds to the request for transactions with the external storage (44) for managing the transactions for storage of data to, and retrieval of data from, the external storage (44).

read more

Citations
More filters
Patent

Virtual disk drive system and method

TL;DR: In this article, a disk drive system and method capable of dynamically allocating data is provided, where a RAID subsystem and disk manager dynamically allocate data across the pool of storage and a plurality of disk drives based on RAID-to-disk mapping.
Patent

Continuously available computer memory systems

TL;DR: In this article, a highly reliable computer memory storage system that is divided into subsystems, each of which is provided in triplicate: a primary subsystem, a backup subsystem and a spare subsystem, is presented.
Patent

System and method for disk mapping and data retrieval

TL;DR: In this paper, an apparatus and method for disk mapping and data retrieval includes a data storage medium on which has been stored a plurality of data records, each record includes at least a record identification portion, for uniquely identifying each record from among the plurality of records.
Patent

System for allocating storage spaces based upon required and optional service attributes having assigned piorities

TL;DR: In this paper, a storage device selection program responds to file allocation requests by comparing the specified set of service attributes with the data stored in the service class table and selecting one of the data storage devices in accordance with predefined service attribute matching criteria.
Patent

System of device independent file directories using a tag between the directories and file descriptors that migrate with the files

TL;DR: In this article, the file system includes a routine that monitors disk loading and unused disk capacity, and automatically moves files among the disks so as to better balance disk usage, which can be used to find a file by translating a tag value into a pointer to the disk on which the file is stored and a pointer of the file's descriptor entry.
References
More filters
Journal ArticleDOI

A case for redundant arrays of inexpensive disks (RAID)

TL;DR: Five levels of RAIDs are introduced, giving their relative cost/performance, and a comparison to an IBM 3380 and a Fujitsu Super Eagle is compared.
Patent

Parity spreading to enhance storage access

TL;DR: In this paper, a storage management mechanism distributes parity blocks corresponding to multiple data blocks substantially equally among a set of storage devices, enhancing the access characteristics of the set of devices.
Journal ArticleDOI

Synchronized Disk Interleaving

TL;DR: The advantages and limitations of the proposed disk interleaving scheme are analyzed using the M/G/1 queueing model and compared to the conventional disk access mechanism.
Patent

Secure data processing system architecture with format control

TL;DR: In this paper, means and methods of securing protected system files in a data processing system are disclosed, wherein the information determining access rights of system users to the protected systems files remains at all times within a secure processor.
Patent

Fast write operations

TL;DR: In this paper, a technique for performing fast write operation is described for performing a host write request, which would normally be serviced by an immediate physical write to a data storage device, is instead written to cache and nonvolatile storage in the data storage devices controller.