Instruction manual
10
Software For Striping
AJA recommends the Disk Utility software provided by Apple with OS X for creating and
striping RAIDs, including 3rd-party, SCSI and Fibre Channel RAIDs. This utility can be found in
Macintosh HD/Applications/Utilities, where “Macintosh HD” is the name of the system drive.
Storage Example: AJA KONA 3G for Dual Link HD and 2K resolutions
AJA can recommend the following examples of drive configurations to support certain
specified video and digital film resolutions and their associated bandwidth requirements. If a
particular drive array or manufacturer is not listed, it may simply be because AJA has no
experience with the company or a particular unit. This guide simply offers examples that AJA
has used with success when working with the specified formats listed. With any device, actual
results may vary from unit to unit and proper configuration of the drive array and any ancillary
items such as host bus adapters, software drivers and cabling is assumed.
Supports 2K, Dual Link HD, Single Link HD, SD:
• G-Technology, Inc. GSPEED-XL (4Gb Fibre Channel)
Unit must be fully populated and with a minimum 512MB cache per controller.
• InforTrend EonStor A16F-G2422 (4Gb Fibre Channel)
Unit must be fully populated and with a minimum 512MB cache per controller.
• Any drive array with comparable specifications to the above examples; 16 or more SATA
drives with 4Gb fibre channel connectivity to host and 512MB cache per controller.
Storage Capacity
No matter which storage system you choose, pick one that can scale to meet your needs over
time. Ideally, you should be able to increase storage capacity or switch to a RAID level offering
increased data protection in the future. Balance current and future storage needs with your
budget and choose accordingly.
Note: All of the following numbers are approximations based on 2 channels of 48kHz audio.
More audio channels can increase data rates. AJA also provides a freeware application
called the AJA DataCalc that can be used to help determine the amount of storage space
and bandwidth requirements needed for a selected format, fram e rate, audio setting and
compression. The AJA DataCalc application is also included with version 3.3 and higher of
the KONA driver and can be found in the AJA Utilities folder which installs in the
Applications folder of the Mac OS. The AJA DataCalc application can also be downloaded
from the AJA website and used on any OSX computer.
FORMAT
Data Rate in
MB/sec
Storage
Requirement in
GB/Hour
SD Formats
10-bit 4:2:2 SD (NTSC/PAL) 28 101
8-bit 4:2:2 SD (NTSC/PAL) 21 76
DV50(NTSC/PAL) 7 27
DV25(NTSC/PAL) 3.6 14
Photo JPEG SD (NTSC/PAL) 2.5 9
HD Formats
10-bit 4:2:2 1080i 59.94Hz/29.97fps 166 597
8-bit 4:2:2 1080i 59.94Hz/29.97fps 124 448
10-bit 4:2:2 1080i 50Hz/25fps 138 498
8-bit 4:2:2 1080i 50Hz/25fps 104 373
10-bit 4:2:2 1080PsF 23.98Hz/fps 133 478
8-bit 4:2:2 1080PsF 23.98Hz/fps 100 358
10-bit 4:2:2 720P 59.94Hz or fps 133 478
8-bit 4:2:2 720P 59.94Hz or fps 100 358