Distributed global data vaulting mechanism for grid based storage

Patent metadata

Field	Value
Publication number	US-10171583-B2
Application number	US-201715833563-A
Country	US
Kind code	B2
Filing date	Dec 6, 2017
Priority date	Sep 22, 2015
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

Provided are a computer program product, system, and method for distributed global data vaulting in a grid of server computers. At each of the server computers, it is determined that there is a system shutdown. For each data element at that server computer, a list of one or more vault devices at other server computers is retrieved from a vault distribution table, and the data element is dumped to the one or more vault devices at the other server computers.

First claim

What is claimed is:

1. A computer program product for distributed global data vaulting in a grid of server computers, the computer program product comprising a computer readable storage medium having computer readable program code embodied therein that executes to perform operations, the operations comprising:
at one of the server computers of the grid of server computers,
assigning a plurality of vault devices for each data element of a plurality of data elements based on a resiliency level,
wherein, for a first priority, each of the plurality of vault devices assigned to a data element is at a different server computer of the grid of server computers; and
wherein, for a second priority, in response to determining that there are not enough vault devices to assign each of the plurality of vault devices at a different server computer, at least two of the plurality of vault devices is a different vault device of a same server computer of the grid of server computers; and

creating a vault distribution table that identifies the plurality of vault devices for each data element; and

at each of the server computers of the grid of server computers,
determining that there is a system shutdown; and
for each data element at that server computer,
retrieving a list of one or more vault devices at other server computers from the vault distribution table; and
dumping the data element to the one or more vault devices at the other server computers.

2. The computer program product of claim 1 , wherein the operations further comprise:
determining a first amount of time to complete a vaulting process;
determining a second amount of time by deducting a recovery time from the first amount of time; and
using the second amount of time to determine a write cache maximum amount of data for each of the server computers.

3. The computer program product of claim 1 , wherein the operations further comprise:
identifying the vault devices in the grid of server computers; and
identifying each data element of each of the server computers.

4. The computer program product of claim 1 , wherein the operations further comprise:
in response to determining at least one of: 1) a number of vault devices have changed, and 2) a number of server computers in the grid have changed, updating the vault distribution table.

5. A system for distributed global data vaulting, comprising: a grid of server computers, wherein each of the server computers includes a processor and a computer readable storage medium having program code; and
wherein, one of the server computers of the grid of server computers executes the program code to perform operations, the operations comprising,
assigning a plurality of vault devices for each data element of a plurality of data elements based on a resiliency level,
wherein, for a first priority, each of the plurality of vault devices assigned to a data element is at a different server computer of the grid of server computers; and
wherein, for a second priority, in response to determining that there are not enough vault devices to assign each of the plurality of vault devices at a different server computer, at least two of the plurality of vault devices is a different vault device of a same server computer of the grid of server computers; and

creating a vault distribution table that identifies the plurality of vault devices for each data element; and

wherein each of the server computers of the grid of server computers executes the program code to perform operations, the operations comprising:
determining that there is a system shutdown; and
for each data element at that server computer,
retrieving a list of one or more vault devices at other server computers from vault distribution table; and
dumping the data element to the one or more vault devices at the other server computers.

6. The system of claim 5 , wherein the computer readable program code executes to perform operations, the operations comprising:
determining a first amount of time to complete a vaulting process;
determining a second amount of time by deducting a recovery time from the first amount of time; and
using the second amount of time to determine a write cache maximum amount of data for each of the server computers.

7. The system of claim 5 , wherein the operations further comprise:
identifying the vault devices in the grid of server computers; and
identifying each data element of each of the server computers.

8. The system of claim 5 , wherein the operations further comprise:
in response to determining at least one of: 1) a number of vault devices have changed, and 2) a number of server computers in the grid have changed, updating the vault distribution table.

9. A method for distributed global data vaulting in a grid of server computers, comprising:
at one of the server computers of the grid of server computers,
assigning a plurality of vault devices for each data element of a plurality of data elements based on a resiliency level,
wherein, for a first priority, each of the plurality of vault devices assigned to a data element is at a different server computer of the grid of server computers; and
wherein, for a second priority, in response to determining that there are not enough vault devices to assign each of the plurality of vault devices at a different server computer, at least two of the plurality of vault devices is a different vault device of a same server computer of the grid of server computers; and

creating a vault distribution table that identifies the plurality of vault devices for each data element; and

at each of the server computers of the grid of server computers,
determining that there is a system shutdown; and
for each data element at that server computer,
retrieving a list of one or more vault devices at other server computers from the vault distribution table; and
dumping the data element to the one or more vault devices at the other server computers.

10. The method of claim 9 , further comprising:
determining a first amount of time to complete a vaulting process;
determining a second amount of time by deducting a recovery time from the first amount of time; and
using the second amount of time to determine a write cache maximum amount of data for each of the server computers.

11. The method of claim 9 , further comprising:
identifying the vault devices in the grid of server computers; and
identifying each data element of each of the server computers.

12. The method of claim 9 , further comprising:
in response to determining at least one of: 1) a number of vault devices have changed, and 2) a number of server computers in the grid have changed, updating the vault distribution table.

Assignees

• IBM

Inventors

• Gan-Levi Daniel
• Garmiza Ehood
• Keller Michael
• Leneman Ofer

Classifications

• H04L67/2852

  Electricity · mapped topic

• H04L67/1095 Primary

  Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes · CPC title

• H04L67/5682

  Policies or rules for updating, deleting or replacing the stored data · CPC title