User Guide

Chapter 9. Configuration planning 185
򐂰
Minimal host application outages.
The disadvantages of remote copy technologies are:
򐂰 The same storage device types are required. For example, in a Metro Mirror configuration
you need ESS 800 mirroring to a DS8000 (or an IBM approved configuration), but cannot
have a non-IBM disk system mirroring to a DS8000.
򐂰 Physical volume ID (PVID) and device name are not maintained if not under LVM.
9.5.5 Migration services and appliances
The following IBM migration services and appliances are available:
򐂰 IBM Piper Services Offering
򐂰 IBM SAN Volume Controller
These data migration services and appliances provide smooth, risk-averse data migration to
your DS8000. The advantages of these migration methods are:
򐂰 Facilitated by custom migration tools.
򐂰 Minimal customer involvement by IT staff, except planning.
򐂰 Minimal disruption or outages to IT operations.
򐂰 Online migrations can occur while continuing IT operations.
򐂰 Tunable migration rate to eliminate impact to applications.
򐂰 Transparent to application servers.
򐂰 High throughput tool minimizes migration duration.
򐂰 Delivered by team experienced with many migrations.
򐂰 Maintains data integrity during migration.
򐂰 Can fall back to the original data and storage device.
򐂰 Large number of operating systems and storage systems supported.
The disadvantages of migration appliances are:
򐂰 Cost of migration appliance or service.
򐂰 Application disruption to install and remove appliance.
See Appendix C, “Service and support offerings” on page 407 for storage services offerings.
9.5.6 z/OS data migration methods
Figure 9-15 on page 186 lists a number of data migration methods available to migrate data
from existing disk systems to the DS8000 in a zSeries environment.