EMC Storage Product Knowledge Sharing

We have discussed about Virtual Provisioning of Symmetrix in previous post. Now, we will discuss about Virtual Provisioning Configuration. You have to understand your storage environment before you run the below mentioned command.

Configuring and viewing data devices and pools:

Data Devices are devices with datadev attribute. Only Data Devices can be part of Thin Pool. Devices with different protection scheme can be supported for use in Thin Pools. It is depending on specific Enginuity level. All devices with the datadev attribute are used for exclusively for populating Thin Pools.

Create command file (Thin.txt) with following syntax:

create dev count=10, config=2-Way-Mir, attribute=datadev, emulation=FBA, size=4602;

# symconfigure -sid 44 -file thin.txt commit –v –nop

A Configuration Change operation is in progress. Please wait...
Establishing a configuration change session...............Established.
Processing symmetrix 000190101244
{
create dev count=10, size=4602, emulation=FBA,
config=2-Way Mir, mvs_ssid=0000, attribute=datadev;
}
Performing Access checks..................................Allowed.
Checking Device Reservations..............................Allowed.
Submitting configuration changes..........................Submitted
…..
…..
…..
Step 125 of 173 steps.....................................Executing.
Step 130 of 173 steps.....................................Executing.
Local: COMMIT............................................Done.
Terminating the configuration change session..............Done.

The configuration change session has successfully completed.

# symdev list -sid 44 -datadev

Symmetrix ID: 000190101244
Device Name Directors Device
--------------------------- ------------- -------------------------------------
Sym Physical SA :P DA :IT Config Attribute Sts Cap(MB)
--------------------------- ------------- -------------------------------------
10C4 Not Visible ???:? 01A:C4 2-Way Mir N/A (DT) RW 4314
10C5 Not Visible ???:? 16C:D4 2-Way Mir N/A (DT) RW 4314
10C6 Not Visible ???:? 15B:D4 2-Way Mir N/A (DT) RW 4314
10C7 Not Visible ???:? 02D:C4 2-Way Mir N/A (DT) RW 4314
10C8 Not Visible ???:? 16A:D4 2-Way Mir N/A (DT) RW 4314
10C9 Not Visible ???:? 01C:C4 2-Way Mir N/A (DT) RW 4314
10CA Not Visible ???:? 16B:C4 2-Way Mir N/A (DT) RW 4314


Thin Pool can be created using symconfigure command and without adding data devices:

# symconfigure -sid 44 -cmd "create pool Storage type=thin;" commit –nop

Once pool is created, data devices can be added to the pool and enabled: