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DC-Powered VNX™ Series Enclosures Installation and Operation Guide
Power considerations
Power considerations
IMPORTANT
Systems with DC power are intended for use in environments with redundant and
highly available power sources (for example, "Central Office" grade power within the
telecommunications industry), and DC power provided by the site must meet this
requirement. The sudden loss of all incoming DC power to a storage system may
cause unexpected abnormal behavior of the storage system and loss of write-cache
data.
Power distribution must support the number of outlets required for the device (two
per enclosure) and the device power rating.
list the power
specifications for EMC
®
VNX™ series disk processor, data mover, and disk-array
enclosures.
Table 1 Disk processor enclosure DC ratings (VNX5100, VNX5300, VNX5500)
Requirement
Description (note all ratings assume fully configured systems)
VNX5100 DP15
VNX5100 DP25
VNX5300 DP15
VNX5500 DP15
VNX5300 DP25
VNX5500 DP25
DC line voltage
-36 to -72 V DC (nominal -48 V or -60 V power systems)
DC line current
(operating maximum)
10.8 A max at -36 V DC
8.1 A max at -48 V DC
10.7 A max at -36 V DC
8.0 A max at -48 V DC
12.6 A max at -36 V DC
9.5 A max at -48 V DC
12.5 A max at -36 V DC
9.4 A max at -48 V DC
Power consumption
(operating maximum)
390 W max
385 W max
455 W max
450 W max
Heat dissipation
(operating maximum)
1.40 x 10
6
J/hr
(1,330 Btu/hr) max
1.39 x 10
6
J/hr
(1,320 Btu/hr) max
1.64 x 10
6
J/hr
(1,560 Btu/hr) max
1.62 x 10
6
J/hr
(1,540 Btu/hr) max
In-rush current
35 A peak, per requirements in EN300 132-2 Sect. 4.7 limit curve
DC protection
30 A fuse in each power supply
DC inlet type
Positronics PLBH3W3M4B0A1/AA
Mating DC connector
Positronics PLBH3W3F0000/AA
Ride-through time
10 ms min at -50 V input
Current sharing
±10% of full load, between power supplies
