Chapter 3
Implementing Pipeline & Installing Software
26
March, 2009
When calculating disk buffer RAID array read/write performance requirements, you should use two times
the required Pipeline streams write requirements. This is required to support a write and a read operation
on the data buffer array for each Pipeline stream.
The Pipeline's media storage location (NAS, direct-attached shared storage or shared network folder)
must meet the write performance requirements. When using NAS, direct-attached shared storage or
shared network folder, be sure to verify that your system has the communications bandwidth for writing all
Pipeline media data to the media storage location in real-time.
DISK REQUIREMENTS FOR MEDIA FILES
Pipeline Control creates media files during log and capture, or when executing capture schedules. When
using a schedule, clip events are created when a clip is ready to be captured. You can capture in
QuickTime files and TIFO(Telestream Intermediary Format (TIFO) on page 58) files, and they increase in
size as the media is ingested and written to disk. Conflicts and problems can occur if you don’t plan for disk
requirements when capturing media.
If you have two or more schedules (either capture or playout) with the same storage location open in
Pipeline Control and you activate both of them, the second schedule displays a store conflict error. You
must select a different storage location before you can activate it. This doesn’t prevent you from creating a
store conflict by using the same storage location in two different instances of Pipeline Control on the same
(or different) computer. This situation should be avoided, because it may result in file name conflicts.
When you activate a Capture schedule, Pipeline Control checks on the space requirements based on the
clip events in the schedule. Telestream recommends that when you create a new schedule, you determine
that the selected store has adequate available space.
Media File Creation is Disk-Intensive. File capacity and write speed requirements are based on how
many clips you store, how many clips you capture at one time, and how large each file is. For example, If
you create a schedule to capture 24 half-hour DV files at 25Mbps, storage requirements exceed 300GB in
a 24-hour period.
Make sure that your disk, RAID, or SAN write speed is capable of saving media fast enough to avoid lost
frames, and that your computer, Xsan or network store has available space before running production
schedules. (See Platform and System Requirements on page 29).
Note
If Pipeline Control crashes during capture and you are using disk buffering, on Mac OS
X you should reboot to delete temporary media files that may be stored in the standard
Unix temporary directory (default: /tmp).
On Windows, empty your disk buffering directory (default: <boot disk>:\Documents and
Settings\<current user>\Local Settings\Temp\).
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