The OpenFlex E3000 chassis may contain up to 9 E3000 Fabric Device Blanks 6 . The chassis must contain at least one device, and the remaining slots must be populated with either devices or device blanks to avoid compromising the cooling of the enclosure. Each E3000 Fabric Device Blank may be replaced with a device as the enclosure is scaled up. The E3000 Fabric Device Blank may be serviced or replaced one at a time while the enclosure is powered on