SNAP and CLONE

did you have a chance to download solutions enabler guide that explains the differences between the two ?

https://support.emc.com/docu40317_EMC_Solutions_Enabler_Symmetrix_TimeFinder_Family_CLI_V7.4_Product_Guide.pdf?language=en_US

Start by reading this:

https://support.emc.com/docu40239_Symmetrix-TimeFinder-Product-Guide-for-VMAX-40K,-VMAX-20K-VMAX-Series.pdf?language=en_US

regards,

Saurabh

Clone & SNAP are both point-in-time copy of source device.

The differences between them are SNAPs are not a full copies of data; they are logical images of the original information, based on the time the Snap was created. Timefinder/Clone & SNAP default maximum number of Snaps is 16. if you enable MULTI_VIRTUAL_SNAP can increase the maximum number of Snap sessions to 128. SNAP is not a real backup, lose the source, lose the copy. More session created will also hit the performance as unchanged track reads still place on source device.

i checked the doc. and it says that .

Clone takes point in time copy of Data.

Snap takes point in time copy of images.

So what is the difference in taking Images and Data as mentioned in the document.

images has faster restore time compare to data restore?

Does both support Differential Backup ( that is incremental ).

SNAP requires special devices, Virtual Devices and Save Devices, Clone does not.

We also now have VP Snap, which is kind of like a mixture of the 2. Does not require special devices, only VP devices, which use a little less meta data than VDEV/SAVE devs.  But VP Snap behaves much like Snap. Also allows the targets to share data which may save some capacity.