Datasheet
59
12.4 DS5000 Direct attach Copy Services
IBM has conducted some basic functional testing of DS5100 and DS5300 Copy Services when
directly attached to IBM i. This section summarizes the resulting support statements. Note that
using Copy Services when directly attaching DS5100 and DS5300 storage systems involves
manual steps in both the DS Storage Manager GUI and IBM i. PowerHA for IBM i does not
support DS5100 and DS5300 Copy Services when directly attachied to IBM i (or through VIOS).
FlashCopy and VolumeCopy:
FlashCopy and VolumeCopy are supported when directly attaching DS5100 and DS5300
to IBM i on POWER6 or higher processor-based Power servers.
As mentioned earlier, Power blades are not supported for direct IBM i attachment to
DS5100 and DS5300 in general.
Full-system FlashCopy and VolumeCopy when the production IBM i logical partition
(LPAR) is powered off are supported.
Full-system FlashCopy and VolumeCopy when the production IBM i LPAR is in restricted
state are supported.
Full-system FlashCopy and VolumeCopy of the production IBM i logical partition (LPAR)
after using the IBM i 6.1 memory flush to disk (quiesce) function are not supported.
Full-system FlashCopy and VolumeCopy when the production IBM i LPAR is running are
not supported.
FlashCopy and VolumeCopy of Independent Auxiliary Storage Pools (IASPs) are
supported.
Enhanced Remote Mirroring (ERM):
DS5100 and DS5300 ERM with direct attachment to IBM i is supported on IBM Power
servers (but not on IBM Power blades).
Synchronous ERM (DS5100 and DS5300 Metro Mirror) is supported.
Asynchronous ERM with Write Consistency Groups (DS5100 and DS5300 Global
Mirror) is supported.
Asynchronous ERM (DS5100 and DS5300 Global Copy) is not supported.
Full-system ERM (Metro and Global Mirror) for a planned switchover (IBM i production
LPAR is powered off) is supported.
Full-system ERM (Metro and Global Mirror) for an unplanned failover (IBM i production
LPAR is running) is supported.
ERM (Metro and Global Mirror) with IASPs for a planned switchover (IBM i production
LPAR is powered off) is supported.
ERM (Metro and Global Mirror) with IASPs for an unplanned failover (IBM i production
LPAR is running) is supported.
12.5 NPIV attached storage Copy Services
The main differences between NPIV and VSCSI I/O virtualization for IBM i are:
With NPIV, storage and tape devices report into IBM i with their specific characteristics,
as opposed to generic SCSI devices.
IBM i has also gained NPIV access to storage and tape devices to which it could already
attached directly, benefiting from transparent FC adapter sharing.
As a result, both the storage subsystem (DS8000) and LUN types involved with NPIV for IBM i
are identical to those already supported by PowerHA for IBM i. PowerHA for IBM i continues to
manage both Copy Services on DS8000 using the Storage Management Console (SMC) and the
required clustering objects in IBM i from a single interface. Therefore, DS8000 storage system
Copy Services are supported by PowerHA for IBM i when using NPIV, including FlashCopy,
Metro Mirror and Global Mirror.