AJA KONA 3G, Инструкция по установке и эксплуатации

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Apple 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 system 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:
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Striping data across multiple drives for storage performance (RAID 0).
•
Mirroring for redundancy (RAID 1).
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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.
Parity provides data protection without requiring complete duplication of the drive contents.
In the event of a drive failure, parity information can be used with data on surviving drives to
reconstruct the contents of a failed drive. Parity data can be stored on a dedicated drive, as in
RAID 3, or distributed across an array of drives, as in RAID 5. Parity provides much greater
storage efficiency than mirroring-up to 85 percent for a set of seven drives.
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:
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G-Technology, Inc. GSPEED-XL (4Gb Fibre Channel)
Unit must be fully populated and with a minimum 512MB cache per controller.
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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.