Alex Gerulaitis
Forum Replies Created
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[Alex Gerulaitis] “Pegasus2 R4 then: faster, supports advanced RAID levels, supports TB2.”
The only thing about it (now that I read some reviews): it’s relatively slow – under 400MB/s reads, and probably under 300MB/s writes in RAID5. (I didn’t see Pegasus2 R4 benchmarks but extrapolated from P2-R8 rather disappointing numbers of under 400MB/s, and P-R4 numbers.)
According to CineRAID, their ARC-5026 is faster: 600MB/s writes and 450MB/s reads. (The write speeds seem to be affected by caching however: RAID5 writes are usually slower than reads unless cached.)
ARC-5026 is TB (not TB2) – shouldn’t matter though as it doesn’t saturate the TB channel; it also supports USB 3.0, unlike Pegasus.
Pegasus got the looks though. 🙂
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
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[Richard Windsor] “I am looking for something that is a nice combination of all those things but speed is very important.”
Pegasus2 R4 then: faster, supports advanced RAID levels, supports TB2.
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Well done Joe, and it’s a killer price for that system.
384GB is the max RAM for Z800… so you have some room there… 🙂
How did you mount the SSD? (HP options here; there’re plenty of non-HP ones…)
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[Richard Windsor] “I just purchased a new Mac Pro and I need to buy a RAID for it.”
What is the reason you’re getting a RAID and not just an external TB drive? Capacity? Speed? Redundancy?
[Richard Windsor] “I am currently torn between a Pegasus2 ($1,400) or a GDRIVE 8TB external drive. Does anyone have any suggestions based on experience?”
If you’re looking for a 2-drive RAID, G-RAID is the main choice.
If you *may* be looking for future expansion, another option is to get a 4-bay CineRAID ARC-5026 ($900 with no drives) with just two drives, add more in the future.
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
(edited to correct errors)
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[David Wells] “I guess I could just order the most powerful iMac with 32g Ram, etc. and and add a RAID0 storage solution and go from there. “
I think you’re on the right track with that, and it’s a fairly cost effective solution. The media storage can be a Promise Pegasus, Area/CineRAID or G-RAID TB box.
Cow’s esteemed Walter Biscardi runs similar configurations in his shop and seems to be very happy with them.
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
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[Chris Tarroza] “For both options respectively, do I have all the required gear to actually get the RAID up and running?”
Yes. One possible caveat: four drives may be a limiting factor: setting up RAID5 with just four drives make it slower (20-40%, sometimes more) vs. RAID0, and RAID6 (one of the best RAID levels) is not a viable option. Six or more drives is something I’d be looking for, especially if you have anything high bitrate on the horizon.
If you’re only looking at RAID0 – then you’re all set.
[Chris Tarroza] “Are these the right products to go with? Overkill? Something better?”
They’re some of the best in their respective segments (4 bays); if you’re looking for 8 or more bays, then perhaps one of the Areca / CineRAID boxes might be a better choice. ARC-8050 for instance is an 8-bay box with Thunderbolt I/O for $1.5K before you add drives, and very decent performance.
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
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RAID5, correct?
Backup first, unless the data is not critical.
Shutdown, remove the suspect, insert the spare, boot up, launch WebGUI.
If the rebuild doesn’t start automatically, look for that option (to use the just added drive to rebuild the RAID set) in WebGUI. Couldn’t find that in the manual. If you can’t find it either, mark the just-added drive as spare – after that, the rebuild should start.
HTH.
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
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I just realized we’re in a vendor-specific forum (Facilis) and not in a generic storage forum: my apologies to everyone for taking the discussion seriously off-topic; the discussion here should mainly revolve around Facilis products.
Santanu: if you’d like to continue discussion solutions not related to Facilis, please ask the admin to move it to the generic storage forum, or start a new discussion there.
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If I understand you right, the project is four minutes but it comes with five hours of source files converted from originals?
The only things I can think of:
1. Discard the converted files if you’re done with the project: you could always convert them again if you need to re-edit
… or…
2. Figure out why the originals are choppy to edit (slow system?), and address that.
— Alex Gerulaitis | Systems Engineer | DV411 – Los Angeles, CA
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[David Lord] “The other project is still taking 344 GB on my computer right now, and its only 4 minutes long! “
That’s over 1GB per second if my math is right? Are you working with raw uncompressed 14-bit video from the new Blackmagic 8K Cinema Camera? 🙂
Those 344GB might be including temp and cache files – which you certainly don’t need to back up or archive. If not, could you look into, what’s using all that space?