Chapter 1 System Overview and Requirements
© 2017 Harmonic Inc. All rights reserved. 23 Harmonic MediaGrid Release 4.1
Network Configuration
Table 1–3: RAID Configurations for the ContentStore 5840
NOTE: No other disk drive configurations are supported.
About Drive Replacement
For systems with version 3.2.2 and later, you may use different capacity Harmonic-supplied drives
in the same ContentServer or ContentStore RAID set.
Note the following when replacing a ContentServer or ContentStore drive with a different capacity
drive than the others in the same RAID set:
Any drive you add to an existing RAID set must be at least as large as the smallest
existing drive in that RAID set.
Adding a drive that is larger than the smallest drive in the RAID set will cause it to be
treated as if it were the lesser capacity drive. In other words, the RAID set capacity will
not increase by replacing smaller drives with larger drives.
For drive replacement instructions, refer to the Harmonic MediaGrid Component Replacement
Guides.
Network Configuration
This section lists site-specific information required to join a Harmonic MediaGrid system to a
Windows domain and to incorporate Harmonic MediaGrid into an existing network. This
information is provided for both customers and the installers. This information must be available
prior to Harmonic MediaGrid installation.
Public VLAN
Before installing your Harmonic MediaGrid system, you must allocate an IP address range for the
Harmonic MediaGrid Public VLAN. The Public VLAN is an IP subnet, which will be visible by all
parts of the network that access the Harmonic MediaGrid. Make sure the Public VLAN is
dedicated to Harmonic MediaGrid components, and accessible by clients that will access the
Harmonic MediaGrid. See Figure 1–2 for an example.
IMPORTANT: You must allocate a dedicated IP address range for your Harmonic MediaGrid Public VLAN,
advertise it to all routers on your network, and know this range before configuring your Harmonic
MediaGrid system or switches.
IMPORTANT: The Public VLAN should include Harmonic MediaGrid devices ONLY. Adding non-Harmonic
MediaGrid devices to the Public VLAN may cause unpredictable problems with the Harmonic MediaGrid
system.
# Drives RAID Sets Capacity per Drive Storage Capacity
84 12 x ( 5 + 2 ) 4 TB 240 TB
84 12 x ( 5 + 2 ) 6 TB 360 TB
84 26 x (2+1) +6 4 TB 208 TB
84 26 x (2+1) +6 6 TB 312 TB
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