Browse Prior Art Database

Selectable, individual File mirrorring on non-uniform, redundant disks

IP.com Disclosure Number: IPCOM000013979D
Original Publication Date: 2001-Jul-10
Included in the Prior Art Database: 2003-Jun-19
Document File: 2 page(s) / 79K

Publishing Venue

IBM

Abstract

Title: Selectable individual file mirroring on non-uniform redundant disk Raid level 0 hardware provides mirroring of all data of one hard disk onto another hard disk, and both hard disk are required to be equivalent in size, format and performance, this results in using half of the total available storage capacity on disks. The selectable individual mirroring function allows a user to use different disk sizes, or select which disk, or disk pairs that will be used from a RAID system to have either all files mirrored or just individual (important) pre-designated selected ones. The hardware portion of the selectable individual RAID file mirroring system consists of a register where selectable features and options are set by the user during initial configuration, and setup screens. It will also have a nonvolatile memory that will contain and maintain the directory location of the desired files for mirroring. The nonvolatile memory (for simplicity) can be considered as a file on the hard disk.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 54% of the total text.

Page 1 of 2

Selectable, individual File mirrorring on non-uniform, redundant disks

Title: Selectable individual file mirroring on non-uniform redundant disk

Raid level 0 hardware provides mirroring of all data of one hard disk onto another hard disk, and both hard disk are required to be equivalent in size, format and performance, this results in using half of the total available storage capacity on disks.

The selectable individual mirroring function allows a user to use different disk sizes, or select which disk, or disk pairs that will be used from a RAID system to have either all files mirrored or just individual (important) pre-designated selected ones.

The hardware portion of the selectable individual RAID file mirroring system consists of a register where selectable features and options are set by the user during initial configuration, and setup screens. It will also have a nonvolatile memory that will contain and maintain the directory location of the desired files for mirroring. The nonvolatile memory (for simplicity) can be considered as a file on the hard disk.

On the software side the BIOS code interacts with the disk access to setup special parameters involved for mirroring. These parameters will work with the SMART features that are built today in most disk drives. The SMART feature based on a certain threshold can predict statistically within a certain time frame when a disk failure will occur. Based on this prediction trigger by the SMART function, the selecta...