Gvidas wrote: this one i also whatched but i didnt find that he have got StackWise plus technology..
AFAIK StackWise Plus technology is a technology "label" trademarked by Cisco...if you are looking for Virtual Switching (made through frontplane/backplane stacking)...better if you start to look generically for (frontplane/backplane) stacking - pay attention: not management stacking - instead of just looking for a technology name that is Cisco related only (HPE/Aruba use other terms to name Virtual Switching technologies available on some of their various Switch series: frontplane stacking through the VSF that stands for Virtual Switching Framework technology...available only on Aruba 5400R zl2 Switch series, backplane stacking deployed with the help of special stacking modules/cables which is valid for some others Aruba Switches like the Aruba 2920 and Aruba 3800 and, finally, an another frontplane stacking technology known as IRF Intelligent Resilient Framework available only on some Comware based Switches).
A "like-for-like" features/requirements/limits comparison between what Cisco offers and what HPE/Aruba offer in terms of switching virtualization technologies...is really up to you...especially if your reference looks so specifically Cisco centric.
If you're basically looking for a Virtual Switching (frontplane/backplane stacking) technology then, regarding specifically the Aruba 2920, it admits backplane stacking through proper Stacking Modules (see Aruba 2920 back side) and special Stacking Cables (not Ethernet cables like in frontplane stacking cases).
If you can afford some Switches that belongs to HPE FlexNetwork Switch series (included the HPE OfficeConnect 1950 Switch series) the IRF switching virtualization technology would be the way to go.