Cabling; Table 14. Supported Racks; Table 15. Typical Modular Server System Rack Height And Cable Reduction - Dell PowerEdge M1000e Technical Manual

The VersaRails static rails are not intended to be mounted in threaded-hole racks, because the rails
cannot be fully tightened and secured against the rack mounting flange. Neither the VersaRails nor
the RapidRails kits support mounting in 2-post racks. The min-max values listed in Table 14
represent the allowable distance between the front and back mounting flanges in the rack.
Mounting Rail
interface type
Square
√
RapidRails Static
√
VersaRails Static

Cabling

One of the advantages of a modular server system is the reduction in cable management needs
within a rack system. The inclusion of fabric switches, integrated KVM, and system management
aggregation at the CMCs provides six-fold or better cable reduction. Table 15 shows a comparison
of a typical reduction available when using the M1000e modular system with integrated switches,
compared to traditional rack-and-stack components. The configuration in Table 15 assumes a
server with four Ethernet ports and two Fibre Channel ports. In support of the M1000e, Dell offers a
modular system cable management system to ease installation in Dell or other industry-standard
racks.
Table 15. Typical modular server system rack height and cable reduction
Rack
Component height
2-socket server 1Ux16
KVM 1U
Ethernet switches 1Ux4
FC switches 1Ux2
Total rack 23U height
M1000e equivalent 10U height
Cable management arm (CMA)
Since the M1000e does not need to be extended out of the rack for service, neither the RapidRails
nor the VersaRails static rail systems support a cable management arm. Included instead are a strain
relief bar and cable enumerator clips (Figure 30) to help manage and secure the potentially large
number of cables exiting the back of the system.
PowerEdge M1000e Technical Guide
55
Table 14. Supported racks
Rack types supported
4-Post 2-Post
Round Thread Flush Center
X X X
√
X X
AC power
cables
2x16
1
1x4
1x2
39 AC cables
6 AC cables
Rail adjustability range (mm)
Square Round
Min Max Min
X 712 755 —
X 706 755 706
Ethernet cables FC cables
4x16 2x16
—
—
— 2x2
72 Ethernet cables 36 FC cables
16 Ethernet cables 4 FC cables
Rail depth (mm)
Threaded w/out
CMA
Max Min Max
— — — 703
755 — — 703
KVM cables
USBx16 + VGAx16
— USBx1 + VGAx1
— —
—
USBx17 + VGAx17
USBx1 + VGAx1
with
CMA
—
—