EVS XT4K - Recording Capacities

4.3.4. 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 900 GB or 1.8 TB SAS disks
• external storage only: up to 4 arrays with 24 x 900 GB or 1.8 TB SAS disks, with or
without spare disks
• both internal and external storage.
Warning
The sum of internal and external disk storage on an XT4K server cannot exceed
40 TB. This limit will be achieved with 60 disks of 900 GB.
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.
Recording Capacity Figures
The following tables show the recording capacity, in hours, for different video bitrates for:
• 1 record channel, that is 1 video + 8 stereo audio tracks in UHD-4K.
• With the Operational Disk Size parameter set to 100%.
• With arrays of 900 GB disks.
• Without activating the SMPTE 334M packages.
Tip
The table figures should be multiplied by 2 for 1.8 TB disk arrays.
20 4. Software Specifications
EVS Broadcast Equipment SA Issue 15.2.A- June 2017