EVS XS - Recording Capacities

4.5. Recording Capacities
Disk Storage
The disk storage, on SAS disks, can be as follows, with a total of up to 84 disks:
• internal storage only: 6 or 12 x 300 GB or 900 GB SAS disks
• external storage only: up to 4 arrays with 24 x 300 GB or 900 GB SAS disks, with or
without spare disks
• both internal and external storage.
Warning
The sum of internal and external disk storage on an XS server cannot exceed 20
TB.
Figures in Recording Capacity Tables
The following tables show the recording capacity, in hours, for different video bitrates for:
• 1 record channel, that is 1 video + 4 stereo audio tracks in SD; 1 video + 8 stereo
audio tracks in HD.
• With the Operational Disk Size parameter set to 100%.
• With arrays of 300 GB disks.
Tip
The table figures should be multiplied by 3 for 900 GB disk arrays.
Configurations in normal characters are the recommended ones without hot spare disks.
Configurations in bold characters are the recommended ones with hot spare disks.
Raid Level: 3
The Video Raid uses striping process across 5 or 6 disk drives. The video and audio data
is striped over the first 4 or 5 drives while the parity information is saved on the fifth or
sixth drive. If one drive is damaged, the Video Raid can use the parity information to
recover the missing information, so that operation can continue seamlessly without
bandwidth loss.
For more information on online rebuild, refer to the section dedicated to this subject in the
XT3 Software Technical Reference manual.
XS Server-Version 11.00-Hardware Technical Reference Manual
4. Software Specifications 27