Hello Gauravji

Here is a link to the support phone#.  You will need to select your country from the drop down, & then it will give you the different support phone #’s. https://www.dellemc.com/hi-in/contact-us.htm

Please let us know if you have any other questions.

Does the Isilon nodes use service tags or serial number to open a case?

Hello DellROS,

Isilon uses serial# to open a support case.