Dell DAE2P Guide d'installation télécharger pdf (Page 12)

Step 7 Continued

Verify Power Settings and Connections

• In systems with dc power, connect DB9-RJ12 sense cables (sometimes called

SPS emulator cables) between each power supply and the SPS serial connector

on its corresponding storage processor, as shown below.

• dc power cords from power/cooling module A (PS A) and PS B connect

directly to independent sources of dc power.

6. Connect the cabinet ac/dc power cords to the power outlets in your facility.

We recommend connecting each power cable to a different branch circuit. You

must connect both power cords to appropriate power sources. Connecting to only one

power source will degrade the system’s high availability.

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.

EMC2960

SP ASP B

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Dell DAE2P Guide d'installation Page 12