HP 3PAR Guía para resolver problemas descargar pdf (Pagina 19)

discoverDevices

The discoverDevices command returns devices on the specified storage array configured for

replication with the specified target array.

SRM recognizes the following device types:

• replication source – A read-write device on the source array configured for replication to the

target array

• replication target – A read-only replica on the target array identified by a string key

• demoted source – The replication source put in read-only mode in preparation for failover

• promoted target – The read-write device on the target array created from replication target

during failover

The following information is expected for each replication source:

• A unique device ID, used by SRM to execute commands like queryDeviceDetails and syncOnce

• An optional user-friendly name of the device

• An identification used by SRM to match the replicated device to a device attached to an ESX

host

• A unique key identifying the replication target used by SRM to execute commands like

testFailoverStart, testFailoverStop, and failover

The following information is expected for each replication target:

• A unique key identifying the target

• An optional user-friendly name of the target

The following information is expected for each demoted source:

• A unique device ID

• An optional user-friendly name of the device

• A unique key identifying the replication target

The demoted source does not contain device identification because the device is not expected to

be visible to any ESX host.

The replication target is identified by a key, which can be different from the ID of the promoted

device after failover. The promoted device should contain both key and ID of the promoted device.

Once replication is reversed, the promoted target becomes a replication source, which is identified

by device ID only.

The following information is expected for each promoted target:

• A unique key identifying the target

• An optional user-friendly name of the target

• A unique device ID of the device created during failover

• An identification used by SRM to match the promoted device to a device attached to an ESX

host

HP 3PAR supports World-Wide Name (WWN) device identification for Fibre Channel and iSCSI

devices.

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HP 3PAR Guía para resolver problemas Pagina 19