Calculating bandwidth requirements for a specified recovery point objective

Patent metadata

Field	Value
Publication number	US-2016364300-A1
Application number	US-201514735964-A
Country	US
Kind code	A1
Filing date	Jun 10, 2015
Priority date	Jun 10, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

Determining the bandwidth required for data replication for disaster recovery. Given a specified recovery point objective (RPO), bandwidth requisitioning and usage is determined according to meet the RPO based on observed factors.

First claim

What is claimed is:

1 . A method comprising:
receiving a recovery point objective; performing a set of operation instructions; collecting a set of data correlating to a set of bandwidth factors, based on the set of operation instructions; and calculating a bandwidth, based, at least in part, on the set of bandwidth factors and the recovery point objective; wherein:
at least the collecting step is performed by computer software running on computer hardware.

2 . The method of claim 1 , further comprising:
receiving the set of operation instructions from a first data storage controller; wherein:
the set of operation instructions is performed on a set of virtual data to simulate a relationship between the first data storage controller and a second data storage controller.

3 . The method of claim 1 , wherein the set of bandwidth factors includes a set of de-duplicated writes and a set of dependent writes.

4 . The method of claim 1 , further comprising:
determining a mirror strategy.

5 . The method of claim 4 , wherein:
the recovery point objective is a non-zero time period; and the mirror strategy is one of continuous asynchronous or periodic asynchronous.

6 . The method of claim 1 , wherein calculating the bandwidth includes a buffer.

7 . The method of claim 1 , further comprising:
disconnecting a data communication channel between a first data storage controller and a second data storage controller.

8 . A computer program product comprising a computer readable storage medium having stored thereon:
first program instructions programmed to receive a recovery point objective; second program instructions programmed to perform a set of operation instructions; third program instructions programmed to collect a set of data correlating to a set of bandwidth factors, based on the set of operation instructions; and fourth program instructions programmed to calculate a bandwidth, based, at least in part, on the set of bandwidth factors and the recovery point objective.

9 . The computer program product of claim 8 , further comprising:
fifth program instructions programmed to receive the set of operation instructions from a first data storage controller; wherein:
the set of operation instructions is performed on a set of virtual data to simulate a relationship between the first data storage controller and a second data storage controller.

10 . The computer program product of claim 8 , wherein the set of bandwidth factors includes a set of de-duplicated writes and a set of dependent writes.

11 . The computer program product of claim 8 , further comprising:
fifth program instructions programmed to determine a mirror strategy.

12 . The computer program product of claim 8 , wherein the fourth program instructions programmed to calculate the bandwidth includes a buffer.

13 . The computer program product of claim 8 , further comprising:
fifth program instructions programmed to disconnect a data communication channel between a first data storage controller and a second data storage controller.

14 . A computer system comprising:
a processor set; and a computer readable storage medium; wherein:
the processor set is structured, located, connected, and/or programmed to run program instructions stored on the computer readable storage medium; and
the program instructions include:
first program instructions programmed to receive a recovery point objective;
second program instructions programmed to perform a set of operation instructions;
third program instructions programmed to collect a set of data correlating to a set of bandwidth factors, based on the set of operation instructions; and
fourth program instructions programmed to calculate a bandwidth, based, at least in part, on the set of bandwidth factors and the recovery point objective.

15 . The computer system of claim 14 , further comprising:
fifth program instructions programmed to receive the set of operation instructions from a first data storage controller; wherein:
the set of operation instructions is performed on a set of virtual data to simulate a relationship between the first data storage controller and a second data storage controller.

16 . The computer system of claim 14 , wherein the set of bandwidth factors includes a set of de-duplicated writes and a set of dependent writes.

17 . The computer system of claim 14 , further comprising:
fifth program instructions programmed to determine a mirror strategy.

18 . The computer system of claim 17 , wherein:
the recovery point objective is a non-zero time period; and the mirror strategy is one of continuous asynchronous or periodic asynchronous.

19 . The computer system of claim 14 , wherein the fourth program instructions programmed to calculate the bandwidth includes a buffer.

20 . The computer system of claim 14 , further comprising:
fifth program instructions programmed to disconnect a data communication channel between a first data storage controller and a second data storage controller.

Assignees

• IBM

Inventors

• Kulkarni Shweta V
• Roy Subhojit
• Scales William J

Classifications

• G06F11/00

  Error detection; Error correction; Monitoring (error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00) · CPC title

• G06F11/1464 Primary

  for networked environments · CPC title

• G06F11/3452

  Performance evaluation by statistical analysis · CPC title

• G06F11/3485

  for I/O devices · CPC title

• G06F11/3034

  where the computing system component is a storage system, e.g. DASD based or network based (digital input from or digital output to record carriers G06F3/06; digital recording or reproducing G11B20/18; for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS], H04L67/1097) · CPC title