VMAX Interview Preparation

VMAX

Q: Can you explain step by step procedure to implement Virtual/Thin Provisioning?

1.   Creating Data Devices:

#symconfigure -sid "SymID" -cmd "create dev count=16, config=2-Way-Mir,attribute=datadev, emulation=FBA, size=4602;" commit -v -nop

2.   Creating Thin Pool:

#symconfigure -sid "SymID" -cmd "create pool PoolName type=thin;" commit -nop

3.   Adding Data Devices to thin pool:

#symconfigure -sid "SymID" -cmd "add dev 10E4:10E5 to pool PoolName type=thin,member_state=ENABLE;" commit -nop

4.   Creating Thin Devices:

#symconfigure -sid "SymID" -cmd "create dev count=16, size=4602, emulation=fba,config=TDEV;" commit -nop

5.   Binding Thin devices to Thin Pool:

#symconfigure -sid "SymID" -cmd "bind tdev 10F4:10F7 to pool PoolName;" commit -nop

6.   Mapping and Masking TDEVs to host:

#symaccess -sid 1234 -name MyStorageGroup -type storage add devs 0A04:0A05 –wwn xxxx;

Q: Can you explain the step by step procedure for creating Auto provisioning Groups?

The steps for creating a masking view are:

1.   Search the environment for Symmetrix devices on each HBA

#symaccess discover hba

2.   Create a storage group (one or more devices)

#symaccess -sid XXXX create -name StorageGroupName -type storage devs 3250:3350

3.   Create a port group (one or more director/port combinations) 

#symaccess -sid XXXX create -name PortGroupName -type port -dirport 7E:0,7G:1,8F:0

4.   Create an initiator group (one or more host WWNs or iSCSIs)

symaccess -sid XXXX create -name InitiatorGroupName -type initiator -wwn wwn

5.   Create a masking view containing the storage group, port group, and initiator group.When a masking view is created, the devices are automatically masked and mapped.

#symaccess -sid XXXX create view -name MaskingViewName -sg StorageGroupName –pgPortGroupName -ig InitiatorGroupName

Q:How do you configure the symmetrix array for FAST?

1.    By defining symmetrix tiers

2.    By defining FAST Policies

3.   By defining storage groups