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Physical Planning Overview
System host cabling requirements
Layout and space recommendations
Remote support
Secure Remote Support
Establishing SSH trust
Planning for upgrades
Disk Library for mainframe 5.0 Physical Planning Guide for DLm8500
12
The Presite Survey, completed with the EMC Systems Engineer, reports the Fibre
connection (FICON) cable length that is required for each host connection to the
DLm. From a physical planning perspective, review the routing paths from the hosts to
the DLm system. Resolve any physical access issues before the installation day.
Layout and space considerations are described in the chapter for the specific DLm
model.
CAUTION
When moving the DLm cabinets down an incline, the rear of the cabinet must go
first and when moving up an incline, the rear of the cabinet must go last.
Remote support is an important and integral part of the EMC customer service and
support strategy. Communication between the EMC Customer Support Center and
the DLm occurs either through IP connections to the local area network.
DLm supports Secure Remote Support (SRS) Gateway that provides a secure, IP-
based, distributed remote service support solution giving you command, control, and
visibility of remote support access.
Contact EMC Customer Support to configure SRS. This is an optional feature.
DLm features such as DLm health monitoring, DDRL, command processors,
configuration, and setup tools must run commands and operations on the backend
storage systems remotely. For this to work, SSH trust must be established between
DLm VTEs and the backend storage systems. SSH trust ensures that applications on
the DLm can run commands on the storage system without a password. SSH trust is
established when DLm is installed, or when new storage systems or VTEs are added to
the DLm.
When planning for upgrades, consider space, power, and environmental concerns.
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