Dell DAE User Manual download pdf (Page 10)

Upgrading to Dell/EMC CX4 Series Storage Systems

Applied Technology 10

MirrorView

When MirrorView/Synchronous or MirrorView/Asynchronous is installed, the port used by MirrorView will not

change. The logical port numbering will be carried through the conversion. This eliminates the need for a zoning

change to connect the MirrorView ports. Table 4 lists the iSCSI and FC MirrorView ports in use with previous

models.

Table 4. Port usage and MV ports by model

Array

Port numbers and type per SP

CX300

CX300i

iSCSI

CX3-10c

iSCSI

iSCSI/MV

FC/MV

CX3-20

FC/MV

CX3-20c

iSCSI

iSCSI/MV

FC/MV

CX3-20f

FC/MV

CX500

FC/MV

CX500i

iSCSI

CX3-40

FC/MV

CX3-40c

iSCSI

iSCSI/MV

FC/MV

CX3-40f

FC/MV

CX700

FC/MV

CX3-80

FC/MV

Legend:

FC = Fibre Channel port, iSCSI = iSCSI port, /MV = port used by MirrorView

All mirrors need to be administratively fractured and all SAN Copy sessions stopped before the upgrade. SnapView

snapshot sessions and clone groups do not need to be altered. All persistent replication sessions and checkpoints will

be preserved through the upgrade. This means, for example, that a SAN Copy incremental session does not require

another initial synchronization following the upgrade.

If upgrading from a CX300 with SAN Copy/E installed, the SAN Copy/E enabler must be removed before the

upgrade or incompatibility messages will be displayed after the upgrade. All CX4 series platforms support full SAN

Copy.

Upgrading with Celerra

Gateways Attached

Although this is unlikely to be the case, Dell/EMC array upgrades are supported when attached to Dell/EMC N500G

(Celerra) NAS gateways. This is the only Celerra NAS gateway that Dell has resold up to this time. Upgrades are

supported for gateway systems only and not integrated NAS systems. Be sure to indicate that a NAS gateway is

attached when generating the conversion procedure in the CPG.

The N500G uses standard Dell/EMC LUNs for both control data and user data. Celerra control LUNs are usually

placed on the first five Dell/EMC drives, which may conflict with the reserved space expansion required when

upgrading from a CX or CX3 series to a CX4 series. The CAP2 conversion readiness check report will report which

LUNs need to be moved and Celerra CLI tools may be used to determine which of the LUNs identified for

migration are NAS LUNs.

It is advisable that your trained Dell technician carry out the following activities.

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Dell DAE User Manual Page 10

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