Storage virtualization
First Claim
1. A storage virtualization system, comprising:
- a four-layer hierarchy model for facilitating an ability to create storage policies for enabling virtual volumes to be created, expanded, deleted, moved or selectively presented regardless of underlying storage subsystems.
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Abstract
A storage virtualization system that follows a four-layer hierarchy model, which facilitates the ability to create storage policies to automate complex storage management issues, is provided. The four-layers are a disk pool, Redundant Arrays of Independent Disks (RAID arrays), storage pools and a virtual pool of Virtual Disks (Vdisks). The storage virtualization system creates virtual storage arrays from the RAID arrays and assigns these arrays to storage pools in which all of the arrays have identical RAID levels and underlying chunk sizes representing in abstraction very large arrays. Virtual disks are then created from these pools wherein the abstraction of a storage pool makes it possible to create storage policies for the automatic expansion of virtual disks as they fill with user files.
86 Citations
20 Claims
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1. A storage virtualization system, comprising:
a four-layer hierarchy model for facilitating an ability to create storage policies for enabling virtual volumes to be created, expanded, deleted, moved or selectively presented regardless of underlying storage subsystems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20)
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16. The storage virtualization system according to claim comprising:
a four-layer hierarchy model for facilitating an ability to create storage policies for embedded OS partition intelligence to provide partition based data service on a vdisk/volume dividing said vdisk into several partitions and creating file systems on each partition. - View Dependent Claims (17)
Specification