IBM DS8000 User Manual

In the second example, the cplv command copies data from existing logical volume
oldlv to existing logical volume existinglv (-e). When you use the -e option, it
overwrites the existing target-logical volume with the data from the source-logical
volume. When you use the -e option, it maintains the characteristics of the existing
target-logical volume. Take care when you use this option.
The cplv command is a good method for copying or migrating a single logical
volume. Sometimes, however, you might need to migrate all the data from a
physical volume.
Using mirroring to migrate data
Use the following information as guide for how to use the mirroring function of
logical volume manager (LVM) to migrate data. Mirroring can only be used on
logical volumes. It cannot be used for physical volumes.
Mirroring is an LVM task that you perform only on logical volumes to migrate
data. The following example shows how to create a mirror copy of a logical
volume using the mklvcopy command:
# mklvcopy -e m -s y -k datalv 2 hdisk3 hdisk7
.
.
.
# splitlvcopy -y splitlv datalv 1
The mklvcopy command options specify the following values:
(-e m) To use minimum inter-disk allocation policy
(-s y) To strictly allocate mirror copies on separate physical volumes
(-k) To synchronize new copies immediately
datalv The name of the logical volume where you want to start a mirroring
operation
2 The number of copies that you want to make of the data (a maximum of 3)
hdisk3 and hdisk7
The physical volumes where the logical volume resides
hdisk3 The physical volume that already holds the data of datalv
hdisk7 The physical volume that will hold the mirror copy and where you want
to move the data
The
second example is similar to example 1. The mklvcopy command starts
mirroring the infxlv logical volume.
# mklvcopy -e m -s y -k infxlv 2 hdisk4 hdisk10
.
.
.
# rmlvcopy infxlv 1 hdisk4
In this example, hdisk4 is where the data for infxlv already exists, and hdisk10 is
where the mirror copy resides. It is also where you want to ultimately move the
data.
144 DS8000 User’s Guide

IBM DS8000 Specifications

General

Data Encryption	Yes
High Availability	Yes
Drive Types	SSD, HDD
RAID Support	RAID 5, RAID 6, RAID 10
Interface	FICON, Fibre Channel, iSCSI
Form Factor	Rack-mountable
Operating Systems Supported	IBM z/OS, IBM i, AIX, Linux, Windows
Model	DS8000 series
Scalability	Highly scalable

Summary

About this guide

Customers or service representatives

Identifies the intended audience for this publication.

Notices and publication information

Safety notices

Information regarding safety precautions and hazard identification.

Related information

Lists other relevant publications and resources for further information.

Chapter 1. Introduction to IBM System Storage DS8000 series

Overview of the DS8000 series models

Introduces the different base and expansion models of the DS8000 series.

DS8000 Interfaces

Describes the various interfaces for interacting with the DS8000.

DS8000 hardware specifics

Explains the physical structure and components of the DS8000 models.

Chapter 2. Installing the simulated DS8000 Storage Manager interface

Installing the DS Storage Manager on the Windows operating system using the graphical mode

Step-by-step guide for installing the DS Storage Manager via GUI on Windows.

Installing the IBM System Storage DS Storage Manager on the Windows operating system using unattended (silent) mode

Instructions for installing DS Storage Manager on Windows using a silent, automated method.

Chapter 3. Installing the simulated IBM System Storage DS8000 Storage Manager on the Linux operating system

Installing the IBM System Storage DS Storage Manager on a Linux operating system using the graphical mode

Step-by-step guide for installing DS Storage Manager via GUI on Linux.

Installing the IBM System Storage DS8000 Storage Manager on the Linux operating system in unattended (silent) mode

Instructions for installing DS Storage Manager on Linux using a silent, automated method.

Chapter 4. DS Storage Manager postinstallation instructions

Starting the DS Storage Manager program

Describes how to start the DS Storage Manager application on Windows and Linux.

Getting started with the DS Storage Manager

Introduces components like Real-time and Simulated Managers and activation of licensed functions.

Chapter 5. IBM System Storage Management Console

Logging onto the management console

Explains the process of logging into the DS8000 management console interface.

Accessing the DS Storage Manager

Details how to access the DS Storage Manager via the HMC or SSPC.

Chapter 6. Administering user accounts

User Groups

Defines user groups and their assigned levels of access for managing the DS8000.

Adding user accounts

Provides steps for creating new user accounts with specific privileges.

Unlocking an administrative password

Steps to unlock administrative accounts using the security recovery utility tool.

Chapter 7. Storage system logical partition overview

DS8300 LPAR implementation

Explains how the DS8300 supports logical partitioning for virtual storage systems.

Chapter 8. Optional feature codes for the DS8000

Advanced Copy Services functions

Introduces Copy Services functions for data duplication, migration, and disaster recovery.

Creating a Metro Mirror volume pair between a 2107 /242x and a 2105

Instructions for creating a Metro Mirror volume pair between different machine types.

Chapter 9. Migrating data to a storage unit

How to select a data migration method

Guidance on choosing the best data migration method based on efficiency and system impact.

Migrating data from a Windows host system

Guidance on migrating data from Windows Server systems to the DS8000.

Chapter 10. Disaster recovery using Copy Services

Performing failover and failback operations (without Global Mirror)

Explains failover and failback processes for disaster recovery and maintenance.

Moving production to Site B after planned outages (failover)

Steps to switch production to a recovery site after a planned outage.

Appendix. Troubleshooting and analyzing problems

Troubleshooting

Provides information and methods for analyzing and resolving DS8000 issues.

Generic and specific alert traps

Explains different types of alert traps and their associated information.