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When to enable fast write, Extending rdr applications over fcip – Brocade Network Advisor SAN + IP User Manual v12.3.0 User Manual

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Brocade Network Advisor SAN + IP User Manual

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Connecting cascaded FICON fabrics over FCIP

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2. Enter the following command to set the speed for the link. Only speeds supported by the

installed SFP are supported. Use 0 to set back to automatic sensing mode.

portcfgspeed slot/port speed

3. Enter the following command to disable QoS.

portcfgqos --disable slot/port

4. Enter the following command to enable ISL R_RDY mode.

portcfgislmode slot/port, 1

5. Enter the following command to disable trunking on the port.

portcfgtrunkport slot/port, 0

6. Enter the following command to display port settings:

portcfgshow

Extending RDR applications over FCIP

This section provides considerations for configuring tunnels and circuits when extending remote
data replication (RDR) applications over FCIP.

When to enable Fast Write

Enabling Fast Write depends on the application that you are extending over FCIP. Use the following
table to determine if Fast Write should be enabled for a tunnel configuration. Enable Fast Write
through the FCIP Tunnel Advanced Settings dialog box. Access this dialog box by selecting
Advanced Settings on the Add FCIP Tunnel dialog box.

TABLE 121

Using Fast Write for extended applications

Manufacturer

RDR Application

Platform

Type

Use Fast Write

IBM

Global Mirror (PPRC)

DS

Async

No

IBM

Metro Mirror

DS

Sync

No

IBM

XIV

XIV

Sync

Yes

IBM

Global Mirror

SVC

Async

No

IBM

Metro Mirror

SVC

Sync

No

EMC

SRDF/A

Symmetrix

Async

Yes

EMC

SRDF/S

Symmetrix

Sync

Yes (SiRT disabled)

EMC

SRDF Adaptive Copy

Symmetrix

Async

Yes

EMC

MirrorView

CLARiiON

Async

Yes

EMC

MirrorView

CLARiiON

Sync

Yes

EMC

SANcopy

CLARiiON

Async

Yes

HDS

Universal Replicator
(HUR)

All

Async

No

HDS

TrueCopy

All

Async

No