AJA KONA 3G Instruction Manual download pdf (Page 16)

System Requirements

AJA Video recommends that your system meet minimum hardware and software

requirements to achieve a satisfactory level of performance when operating it. System

requirements are subject to change as new versions of operating systems, QuickTime, and

workstations become available. For the most up-to-date Mac Pro Minimum System

Requirements see the AJA website at:

http://www.aja.com/en/support/kona-system-configuration/

For the most up-to-date Windows system requirements for KONA, consult the AJA website:

http://www.aja.com/en/support/kona-pc-system-configuration/

Understanding Disk

Storage Methods

To ensure performance and quality, the disk storage system used with the MacPro or PC

computer must be able to meet the demands of the media.

For uncompressed SD, AJA recommends that at a minimum, the disk storage system must be

able to provide and maintain a consistent 50 MB/sec transfer rate from the computer to disk

(read/write). There are a variety of system configurations and peripherals that can provide this

level of performance.

For uncompressed single link HD, AJA recommends that at a minimum, the disk storage

system must be able to provide and maintain a consistent 200 MB/sec transfer rate from the

computer to disk (read/write). There are a variety of system configurations and peripherals

that can provide this level of performance.

For uncompressed dual link HD and 2K, AJA recommends that at a minimum, the disk storage

system must be able to provide and maintain in excess of 300 MB/sec transfer rate from the

computer to disk (read/write). There are a variety of system configurations and peripherals

that can provide this level of performance.

KONA 3G users wishing to configure a storage for a syste

m should also be aware that raw

benchmark numbers alone do not necessarily reflect the performance of a drive solution.

Other factors, like drive seek time and controller cache also affect performance especially with

regard to the bandwidth requirements of SD, HD, dual link HD and 2K files.

About RAIDs

Redundant Array of Independent Disks, or RAID, is a group of hard drives that appears to the

host computer as a single high-speed storage unit. RAID systems increase storage capacity

and provide the performance, reliability, and data protection needed for video production,

that is not be possible from a single hard drive. Drives inside the RAID array operate

simultaneously, increasing overall throughput. RAID configurations can be comprised of:

• Striping data across multiple drives for storage performance (RAID 0).

• Mirroring for redundancy (RAID 1).

• Parity for data protection (such as RAID 5).

Most RAID configurations, or RAID levels, combine these to provide a balance of protection

and performance.

Striping divides a drive into data blocks, or stripes, that are distributed across an array of

physical drives. Striping a set of disks improves performance because each drive operates

concurrently. However, striping alone, known as RAID level 0, offers no data protection.

Mirroring involves writing identical copies of all data to a pair of physical drives. This results in

very high data reliability: If one drive fails, the data is still available on the remaining disk drive.

However, it also results in a storage efficiency of only 50 percent, because two physical drives

are required to achieve a single drive's capacity. Mirroring alone is known as RAID level 1.

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