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#11
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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This is their exact claim: Quote:
Personally I’ve always found a slight performance penalty when using RAID 0. Performance is not quite twice the aggregate speed of two SSDs running separately. In my Blackmagic Multidocks, one drive maxes out at 384MB/s, two drives in RAID 0 - less than 750MB/s, three drives less than 1000MB/s.
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Dave Marsden UK |
#12
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
RAID0 is simpy extending one drive capacity with another. No software can write to both drives round-robin, it is the card that does RAID which determines what to use. In worst case scenario it fills first drive first and only begins to fill second drive once first one is full.
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Janne What we do in life, echoes in eternity. |
#13
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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I see what you are trying to say about a ‘penalty’, because it doesn’t exactly double with two drives in a RAID. But I interpret that completely different. It’s a benefit. A boost. By themselves, your drives could only do 384, and now in a raid, they are boosted to 750. And with three drives, even better speeds. That’s a good thing! To me, that’s all benefit. You aren’t losing out on anything.
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Pro Tools Ultimate, HDX3 & MTRX + HD MADI 7,1 MacPro, 3.2GHz 16-core, OSX 10.15 S6 M40 48-5, panners, MPM,Dolby Atmos RMU AJA Kona LHi, Sync HD www.ToolshedAudioPost.com www.TheToolshedStudio.com Certified for Dolby Atmos Home Entertainment |
#14
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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Nope, you are getting RAID 0 confused with JBOD. Just a Bunch Of Disks simply extends the Drive capacity of all the drives connected. The advantage is that you can mix-and-match different sizes, but there is no other benefit. It fills the first desk then moves on to the next, and then the next, and so on. RAID 0 is a striped volume. Performance is increased because it alternates as it writes to the disks.
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Pro Tools Ultimate, HDX3 & MTRX + HD MADI 7,1 MacPro, 3.2GHz 16-core, OSX 10.15 S6 M40 48-5, panners, MPM,Dolby Atmos RMU AJA Kona LHi, Sync HD www.ToolshedAudioPost.com www.TheToolshedStudio.com Certified for Dolby Atmos Home Entertainment |
#15
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
Hopefully, that is the key word. Usually something between worst case and best case, but you cannot just throw numbers of best case scenario because real world performance is nowhere near.
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Janne What we do in life, echoes in eternity. |
#16
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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My main project drive in the system I'm working on right now is two Samsung SSD's in a RAID 0. Individually, one of those drives by themselves tests at 449 MB/sec write and 493 MB/sec read. After putting two of them together in a RAID 0, I get 716 MB/sec write and 894 MB/sec read. The confusing part is when companies start using things like "aggregate speed", Which I think is marketing BS. It's not like you can copy a file at the 'aggregate' speed. That like saying my car is going 100 mph, so all four of my tires have an aggregate speed of 400 mph. It sounds great! But it doesn't mean much in the real world. Although to be fair to Sonnet, they used an example of making one SSD chip your system drive, then putting the other three in a RAID. So what I think they are trying to say with aggregate speed is that there won't be any bottlenecks if the chips are operating separately at the same time. But you'll never get close to the speeds of a RAID 0 with JBOD. Especially with 4 chips in a RAID 0.
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Pro Tools Ultimate, HDX3 & MTRX + HD MADI 7,1 MacPro, 3.2GHz 16-core, OSX 10.15 S6 M40 48-5, panners, MPM,Dolby Atmos RMU AJA Kona LHi, Sync HD www.ToolshedAudioPost.com www.TheToolshedStudio.com Certified for Dolby Atmos Home Entertainment |
#17
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
It does! Between zero and hundred percent with two identical drives. Ads tout double performance but it isnt guaranteed
Sent from my iPhone using Tapatalk
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Janne What we do in life, echoes in eternity. |
#18
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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Pro Tools Ultimate, HDX3 & MTRX + HD MADI 7,1 MacPro, 3.2GHz 16-core, OSX 10.15 S6 M40 48-5, panners, MPM,Dolby Atmos RMU AJA Kona LHi, Sync HD www.ToolshedAudioPost.com www.TheToolshedStudio.com Certified for Dolby Atmos Home Entertainment |
#19
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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Quote:
Last edited by Michael Carnes; 04-27-2020 at 02:11 PM. |
#20
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Re: Sonnet M.2 4x4 PCIe Card fan noise or OWC Accelsior
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