The following describes the CHAP support for importing external storage to a
PowerStore cluster:
For
Dell Unity and VNX2 systems, source volumes with single CHAP can be imported, but source volumes with mutual CHAP cannot be imported.
For
Dell EqualLogic Peer Storage (PS) series, there are three cases:
When Discovery CHAP is disabled, source volumes with both single and mutual CHAP can be imported.
If Discovery CHAP is enabled, source volumes with single CHAP can be imported.
If Discovery CHAP is enabled, source volumes with mutual CHAP cannot be imported.
NOTE:If
Dell Unity or VNX2 systems are added in CHAP enabled mode and if a
Dell EqualLogic PS system is added, ensure that Discovery CHAP is enabled for the Dell EqualLogic PS system.
For
Dell Compellent Storage Center (SC) series, source volumes with both single and mutual CHAP can be imported.
Each host must be added with unique CHAP credentials.
XtremIO XI and X2 support the iSCSI CHAP settings that are listed in
Table 1.
Table 1. XtremIO XI and X2 supported iSCSI CHAP settingsThis table lists the supported CHAP Discovery Mode and CHAP Authentication Mode combinations for XtremIO XI and X2 systems.
CHAP Discovery Mode
CHAP Authentication Mode
Disabled
Disabled
Disabled
Either Initiator or Initiator and Target
Initiator
Either Initiator or Initiator and Target
NOTE:The CHAP Discovery Mode
Initiator and Target setting with either a CHAP Authentication Mode setting of
Initiator or
Initiator and Target is not supported.
The
PowerStore iSCSI CHAP settings may differ from the XtremIO cluster. Configure the
PowerStore iSCSI CHAP settings appropriately before setting up the import session. The supported iSCSI CHAP settings of XtremIO XI and X2 systems and the corresponding settings that should be selected in the
Add Remote System slide-out panel from
Migration > Importing External Storage > Remote Systems > + Add Remote System in
PowerStore Manager are listed in
Table 2.
Table 2. PowerStore Manager
Add Remote System slide-out panel iSCSI CHAP settings for XtremIOThis table lists the supported iSCSI CHAP settings of XtremIO XI and X2 systems and the corresponding settings that should be selected in the PowerStore Manager Add Remote System slide-out panel.
Configured XtremIO iSCSI CHAP setting
PowerStore Manager Add Remote System slide-out panel iSCSI CHAP setting
Disabled for CHAP Discovery Mode
Select
Disabled for Discovery CHAP Mode.
Initiator for CHAP Discovery Mode
Select
Enabled for Discovery CHAP Mode.
Disabled for CHAP Authentication Mode
Select
Disabled for Session CHAP Mode.
Initiator for CHAP Authentication Mode
Select
Single for Session CHAP Mode.
Initiator and Target for CHAP Authentication Mode
Select
Mutual for Session CHAP Mode.
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