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Even if you have a single TB2 port like a Retina MBP, once you plug in a TB1 device in the chain, such as a monitor, additional HD, etc. You don’t mention what machine you’re using? If it’s a machine that only has TB1 ports, then no you won’t see the full speed. ” I’ve also read that whilst this is a Thunderbolt 2 I won’t actually see any speed increase for the type of work I do, 2K single file based editing.” Confirm the setting is now enabled issuing the following command: ctrl -v From our CLI type: ctrl -a mod -i 1 -s “forcedreadahead=enable”ģ. Login using your Administrator and from a terminal in your Mac host type “promiseutil”Ģ.
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#PROMISE TECHNOLOGY 12TB PEGASUS2 R6 HOW TO#
How to enable controller forced read using Promise CLI:ġ. Small block random IO will not benefit from this setting. NOTE: Controller forced read ahead is most beneficial if you are working with Audio and Video files where the IO access is large block sequential IO. Promise plans to enable controller forced read ahead by default in the upcoming service release. Before you begin your benchmark testing we recommend to enable the aggressive pre-fetching AKA “controller forced read ahead” on your Pegasus2. These tools are ok to gauge basic throughput. There are several bench tools out there among them are Black Magic Disk Speed Test and AJA System Tests. Copied from the Promise Knowledge Base 10394: Also enable pre-fetching to improve video READ performance. I believe I saw that R8 performance was even faster than R6 if that is a concern.
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