HP Device Manager 4.6 - Deployment Guide

Number of devices
As the total number of managed devices increases, use more powerful, server-level hardware configurations such as RAID.
50,000 is the recommended maximum number of devices in one HPDM deployment. Lab testing shows that HPDM
performs most efficiently up to this number.
Current customers successfully use HPDM to manage up to 50,000 devices with a single HPDM Server using the following
considerations:
• Use of networks faster than 1000 Mbps
• Efficient placement of gateways and repositories to maximize the use of LAN-based communications
• Use of scheduled tasks to execute tasks during non-peak hours of operation
Note
HPDM is a very flexible system and supports the use of any number of HPDM Servers, HPDM Gateways, and repositories
to match the customer’s existing network architecture.
HPDM logic
There are many factors of HPDM logic that might influence the deployment. See following list:
• The HPDM Server doesn’t support clusters. Currently, you can deploy more than HPDM Servers in your environment
according to your requirements. Under one HPDM Server, you can deploy the following:
– Multiple HPDM Consoles
– One database
– Mutiple HPDM Gateways
– One Master Repository
– Multiple Child Repositories
• PXE imaging
– To use PXE imaging, deploy an HPDM Gateway in the same subnet as the devices.
– If the subnet is a NAT subnet, configure port mapping on NAT to make sure that the HPDM Server can talk to the HPDM
Gateway directly.
Multiple HPDM Consoles
Currently, HPDM does not limit the number HPDM Consoles connected to an HPDM Server. From the results of extreme
performance testing (using 50,000 devices, one HPDM Gateway, and one HPDM Server), sending tasks from HPDM Consoles
to all devices at the same time, HP recommends sending a task from less than five HPDM Consoles at the same time.
Multiple HPDM Gateways
HPDM does not limit the number of HPDM Gateways connected to an HPDM Server. One HPDM Gateway has verified good
performance from the performance testing (using 50,000 devices, one HPDM Gateway, and one HPDM Server), so HP
recommends not using too many HPDM Gateways in under one HPDM Server. For some core centers and regions, multiple
HPDM Gateways are preferred for the following reasons:
• Required for PXE imaging tasks
• Consolidated communication between branch offices and DMZ
• Accelerated task delivery speed when there is a NAT Gateway in branch offices
Advantages of additional repositories
As the volume of transferred files increases, add more Child Repositories for the following reasons:
• Reduced traffic between branch offices and DMZ
• Faster software updates and image deployment
Determining number of repositories
To determine the number of Child Repositories required, use the following formula:
Number of repositories = (transferred data ÷ bandwidth) ÷ expected time spent
For example, if you have 20,000 units to be re-imaged and each image is 1 GB, you have 20,000 GB (20 TB) of data to
transfer. With a connection of 100 Mbps from one repository to a device, it takes 444.4 hours to transfer all data.
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