System and method for simulating large capacity configurations in storage systems

Patent metadata

Field	Value
Publication number	US-12332773-B2
Application number	US-202318486225-A
Country	US
Kind code	B2
Filing date	Oct 13, 2023
Priority date	Oct 13, 2023
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A method, computer program product, and computing system for generating a plurality of artificial storage devices for a storage system, wherein each artificial storage device includes a defined storage capacity. A total useable storage capacity for the storage system is defined based upon, at least in part, the defined storage capacity for each artificial storage device and a storage capacity associated with a plurality of physical storage devices. One or more input/output (IO) requests are processed on the storage system. An IO request concerning an artificial storage device of the plurality of artificial storage devices is discarded.

First claim

What is claimed is:

1. A computer-implemented method, executed on a computing device, comprising:
generating a plurality of artificial storage devices for a storage system, wherein each artificial storage device includes a defined storage capacity;
defining a total useable storage capacity for the storage system based upon, at least in part, the defined storage capacity for each artificial storage device and a storage capacity associated with a plurality of physical storage devices, wherein defining the total useable storage capacity for the storage system includes:
defining a physical layer block (PLB) as a plurality of storage capacity portions;
allocating the plurality of storage capacity portions across the plurality of physical storage devices and the plurality of artificial storage devices;
compressing data to a predefined ratio for storage on the PLB; and
prefilling a storage capacity portion of the PLB allocated to a physical storage device with the compressed data without filling any storage capacity portions of the PLB allocated to the plurality of artificial storage devices;

processing one or more input/output (IO) requests on the storage system; and
discarding an IO request concerning an artificial storage device of the plurality of artificial storage devices.

2. The computer implemented method of claim 1 , wherein the PLB includes two megabytes of total storage capacity.

3. The computer implemented method of claim 1 , wherein defining the total useable storage capacity for the storage system includes defining the total useable storage capacity for the storage system based upon, at least in part, a total storage capacity of the PLB including the plurality of storage capacity portions allocated across the plurality of physical storage devices and plurality of storage capacity portions allocated across the plurality of artificial storage devices.

4. The computer implemented method of claim 1 , wherein the PLB maps to eight virtual layer blocks (VLBs) and each VLB maps to 512 user data pages.

5. A computer program product residing on a non-transitory computer readable medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:
generating a plurality of artificial storage devices for a storage system, wherein each artificial storage device includes a defined storage capacity;
defining a total useable storage capacity for the storage system based upon, at least in part, the defined storage capacity for each artificial storage device and a storage capacity associated with a plurality of physical storage devices, wherein defining the total useable storage capacity for the storage system includes:
defining a physical layer block (PLB) as a plurality of storage capacity portions;
allocating the plurality of storage capacity portions across the plurality of physical storage devices and the plurality of artificial storage devices;
compressing data to a predefined ratio for storage on the PLB; and
prefilling a storage capacity portion of the PLB allocated to a physical storage device with the compressed data without filling any storage capacity portions of the PLB allocated to the plurality of artificial storage devices;

processing one or more input/output (IO) requests on the storage system; and
discarding an IO request concerning an artificial storage device of the plurality of artificial storage devices.

6. The computer program product of claim 5 , wherein the PLB includes two megabytes of total storage capacity.

7. The computer program product of claim 5 , wherein defining the total useable storage capacity for the storage system includes defining the total useable storage capacity for the storage system based upon, at least in part, a total storage capacity of the PLB including the plurality of storage capacity portions allocated across the plurality of physical storage devices and plurality of storage capacity portions allocated across the plurality of artificial storage devices.

8. The computer program product of claim 5 , wherein the PLB maps to eight virtual layer blocks (VLBs) and each VLB maps to 512 user data pages.

9. A computing system comprising:
a memory; and
a processor configured to generate a plurality of artificial storage devices for a storage system, wherein each artificial storage device includes a defined storage capacity, to define a total useable storage capacity for the storage system based upon, at least in part, the defined storage capacity for each artificial storage device and a storage capacity associated with a plurality of physical storage devices, wherein defining the total useable storage capacity for the storage system includes: defining a physical layer block (PLB) as a plurality of storage capacity portions, allocating the plurality of storage capacity portions across the plurality of physical storage devices and the plurality of artificial storage devices, compressing data to a predefined ratio for storage on the PLB, and prefilling a storage capacity portion of the PLB allocated to a physical storage device with the compressed data without filling any storage capacity portions of the PLB allocated to the plurality of artificial storage devices, to process one or more input/output (IO) requests on the storage system, and to discard an IO request concerning an artificial storage device of the plurality of artificial storage devices.

10. The computing system of claim 9 , wherein the PLB includes two megabytes of total storage capacity.

11. The computing system of claim 9 , wherein defining the total useable storage capacity for the storage system includes defining the total useable storage capacity for the storage system based upon, at least in part, a total storage capacity of the PLB including the plurality of storage capacity portions allocated across the plurality of physical storage devices and plurality of storage capacity portions allocated across the plurality of artificial storage devices.

Assignees

• Dell Products Lp

Inventors

• Han Geng
• Vankamamidi Vamsi
• Liu Yousheng

Classifications

• G06F3/0683

  Plurality of storage devices · CPC title

• G06F3/0631

  by allocating resources to storage systems · CPC title

• G06F3/0689

  Disk arrays, e.g. RAID, JBOD · CPC title

• G06F3/067

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G06F3/0665

  at area level, e.g. provisioning of virtual or logical volumes · CPC title