TANDBERG Compliance Appliance Deployment Manual - page 12
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4 Storage
4.1 What we mean by ‘storage’
The TCA has over a terabyte of internal disk space which it uses to store the recordings temporarily
until it transcodes them to external storage. When we say
storage
we mean the disk space provided by a
network-attached storage device (NAS) or storage-attached network (SAN) to which the TCA is
attached over a LAN or WAN link. The TCA transcodes to this external storage for long-term archiving
of the recordings.
Important
: it is the organization’s responsibility to provide enough external storage
capacity to cope with the output of the TCA. The amount of output is determined by the
compliance policy. You can work out how much storage the TCA will need, but the
organization must decide how long it wants to keep the recordings and in what resolution
and ensure that this storage space is available. The TCA does not permanently store
anything, once a recording has been transcoded it is deleted from the TCA.
4.2 What gets stored where?
Recordings are stored on whatever external storage device the TCA is attached to. When you finish
installing and configuring a TCA you should give the customer a handover document that lists the details
of the TCA’s configuration, showing which endpoints it is recording, where it is transcoding to and the
transcoding bit rate. The
Configuration Checklist
at the back of this document is a good starting point.
4.2.1 External calls
VCSs cannot send Location Request Queries outside their network, so a VCS can’t ask a TCA in
another organization to record a call. Where two organizations are using TCA, the location of the
recording depends on each organization’s recording policy. If both TCAs are set to record calls going
out and coming in from outside the organizations, both TCAs will create a copy of the call. If the TCA
of the organization receiving the call is not configured to record all incoming calls, only the TCA of the
organization that initiates the call will record it.
4.2.2 Viewing recordings
You can view transcoded recordings with any MPEG4 player. You can only view recordings after the
TCA has transcoded them to external storage; there is no facility for viewing recordings in the TCA’s
temporary storage.
4.2.3 Example: General Mortgage Bank
GMB has two TCAs, one in London, the second in Tokyo. The Tokyo TCA is configured to record only
calls from the New York office and the boardrooms, so it provides ‘redundancy’ and steps in if the
London one fails. Of course, this means that if the London TCA fails, all local London calls will be
routed through Tokyo until it comes back online, but at least recording will continue.