Dell EMC VMAX3, Site Planning Manual

Page: 81 / 100

Dim Label Description
Note: PDU and connected cords cannot interfere with serviceability of system. This includes
maintenance of cable management arms.
h min depth: = b+c (43" (109.2cm) minimum)
This is minimum space required for enclosures, engine rails, and cable management arms.
pd = PDU depth
pw = PDU width
Chassis to chassis grounding
Rack to rack chassis ground connections are required to mitigate the risk of large AC power
transients in the data center affecting system performance. Large AC power transients can occur
from one or a combination of: electrical power grid problems feeding a facility; weak facility
grounding; powerful lightning storm strikes; or facility power equipment failure.
In multiple bay Dell EMC rack systems, use the rack to rack grounding kit, PN 106-562-209, to
provide chassis to chassis grounding. The kit provides straps for both the front and rear of the
cabinets. Both straps must be installed to provide chassis to chassis grounding.
In customer rack systems, mechanisms for tying racks together to provide the ground connection
can vary based on the rack provided by the customer and site facility preference. PN 106-562-209
is a rack to rack grounding kit for Dell EMC racks. The grounding kit may or may not work on racks
provided by the customer due to the variety of ground location positions on racks. If the grounding
kit does not work, a site electrician should add a ground cable tying the two racks common frame
ground points together with 6AWG wire.
Third Party Racking Option
Dell EMC
™
VMAX3
™
Family Site Planning Guide VMAX 100K, VMAX 200K, and VMAX 400K 81