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Pegasus2 R4 drives

My R4 diskless arrived today (ordered Feb 24) and now the decision of what drives to get for it is more pressing than ever. This has been an immensely helpful thread. Im leaning towards going with 4TB WD Black x4.
 
NeonHeatDisease said:
My R4 diskless arrived today (ordered Feb 24) and now the decision of what drives to get for it is more pressing than ever. This has been an immensely helpful thread. Im leaning towards going with 4TB WD Black x4.
Click to expand...
So it really did take a month! Somebody said that the Apple claim of 1-2 months is an exaggeration. But I guess not in your case. Let us know how you like it. I considered one but the 1-2 month delivery time turned me off.
 
danny_w said:
So it really did take a month! Somebody said that the Apple claim of 1-2 months is an exaggeration.
Click to expand...

Yeah I had read that as well. The wait did kind of suck but it gave me a little time to save up for the drives to go in the thing. Just put in a 4tb black today in pass thru mode. 160 MB/s avg in BM disk speed test.
 
I am using HGST 4TB Deskstar 7200 RPM drives in RAID 0.
Usually I buy the HGST 4TB Touro Deskpro 7200 RPM and break the drive from the enclosure.
B&H has them for $150 from time to time. Typically they are lot cheaper that way not mater what.
Performance is pretty respectable.
 

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Summary question

Hi all, great thread, pretty much decided on the P2 diskless (here in AUS the Toshiba drives are half the Promise price, besides 8TB is too small).

Anyway, seems like the WD blacks are good (as are the RE of course...pricey!), but are the blacks ok for RAID 5? I'm looking for speed, and was expecting more than the 195 read posted before (more like 400..?).

So, WD Blacks in RAID 5 anyone, or am I limited to Enterprise drives?
 
Guys here is my setup and I am getting vastly lower performance than whats reported here.

Mac Mini 2011 (Thunderbolt 1)
Promise Pegasus2 R4 diskless
2 X 3TB HGST Deskstar NAS drives in RAID 0

I am getting aroung 50MB/s

Is this because of TBOLT 1?
 
twentytwentwen:

It should not be because of TBOLT 1, Someone else correct me if im wrong but TBOLT1 has the the horsepower to reach atleast 500MB/s
 
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freshtea said:
twentytwentwen:

It should not be because of TBOLT 1, Someone else correct me if im wrong but TBOLT1 has the the horsepower to reach atleast 500MB/s
Click to expand...

No, TB1 can reach nearly double that, with the right drives.

----------
twentytwentwen said:
Guys here is my setup and I am getting vastly lower performance than whats reported here.

Mac Mini 2011 (Thunderbolt 1)
Promise Pegasus2 R4 diskless
2 X 3TB HGST Deskstar NAS drives in RAID 0

I am getting aroung 50MB/s

Is this because of TBOLT 1?
Click to expand...

What app are you testing with? Something is very wrong here.
 
SEAGATE ST3000NM0033 Constellation ES.3 3TB 7200 RPM 128MB cache SATA 6.0Gb/s 3.5 int

I just ordered 4 of these enterprise drives for my Pegasus2 R4 diskless TB2 drive for use with my new MacPro that is on order. I am hoping they will work and wonder if anyone else has tried? While not on the approved drive Pegasus2 R4 list, it seems many other configurations are working fine with lots of certified Seagate drives already on the list.

I would appreciate any comments, recommendations, or thoughts.

Thanks in advance,

Best, Brian
 
faster after the new firmware

Is it just me or did your unit turn up the speed in read with the the new firmware for the pegasus?

I went from 470 to 750 in read in blackmagic speed test.
Also confirmed in pathfinder when transferring files
 
Pegasus2 R4 SSDs, and Samsung 840 Evo SSD

Hello all,

I was looking at getting 4 Samsung 840 SSD 250GB drives; 3 for Raid 5 stripe, 1 for pass through.

Galvanization looks like he did it by ordering M3 X 5mm screws with (I believe) 1TB Samsung SSDs.

Has anyone had any luck with Samsung SSDs or, say, OWC Mercury Electra ssds? Thank you.

galvanization said:
I finally received my screws. The ones that worked were M3 x 5mm with a flat head and cones toward the screw. If the head is too curved upward, it will protrude and collide with the drive below it in the trays. But it worked perfectly with the ones I got.

The P2 R4 definitely reads them and identifies them correctly as SSDs along with their respective specs. I set both SSDs as two independent RAID0 (which basically is a JBOD setup). They definitely transfer data pretty fast. I will test their reaction speed to sample streaming once I have finished transferring all of the libraries from my backup drives.

On the BlackMagic app, I am getting anywhere between 250 MB/s - 450 MB/s per SSD, depending on the load.

That suits me fine for most of my purposes. One drive of the two is a little faster for some reason (both in write and read by about 100 MB/s), even though they have identical settings and are identical drives. Perhaps how full the drive is affects it or perhaps the average size of the individual files. But it doesn't matter. I now have 2 independent streaming sources. And if I hookup my older Lacie Rugged 256GB SSD to the 2nd TB port on the R4, I'll have 3 separate sources for streaming so I'll have even less traffic clutter for spontaneous reads across various libraries. And if it gets cluttered through TB, I'll simply hook it up to 2 separate TB2 ports for truly independent transfers.

*EDIT*
Never mind the slower/faster SSD comment. When I reset my computer, the drives both gave practically identical read/write speeds of roughly 450MBps/300MBps, respectively. And a note to those who try to replicate (in whole or in part) my setup with the P2 R4, if you want to maximize read speed at the expense of some write speed (for streaming samples), the best cache policy, which I have tested, is ReadAhead and WriteThru. WriteBack increases write speed at the expense of read speed.
Click to expand...
 
M3 x 5mm Screws for Samsung SSD

Hello galvanization, can u provide a link where you ordered your M3 screws as you described? Thank you!

galvanization said:
I finally received my screws. The ones that worked were M3 x 5mm with a flat head and cones toward the screw. If the head is too curved upward, it will protrude and collide with the drive below it in the trays. But it worked perfectly with the ones I got.

The P2 R4 definitely reads them and identifies them correctly as SSDs along with their respective specs. I set both SSDs as two independent RAID0 (which basically is a JBOD setup). They definitely transfer data pretty fast. I will test their reaction speed to sample streaming once I have finished transferring all of the libraries from my backup drives.

On the BlackMagic app, I am getting anywhere between 250 MB/s - 450 MB/s per SSD, depending on the load.

That suits me fine for most of my purposes. One drive of the two is a little faster for some reason (both in write and read by about 100 MB/s), even though they have identical settings and are identical drives. Perhaps how full the drive is affects it or perhaps the average size of the individual files. But it doesn't matter. I now have 2 independent streaming sources. And if I hookup my older Lacie Rugged 256GB SSD to the 2nd TB port on the R4, I'll have 3 separate sources for streaming so I'll have even less traffic clutter for spontaneous reads across various libraries. And if it gets cluttered through TB, I'll simply hook it up to 2 separate TB2 ports for truly independent transfers.

*EDIT*
Never mind the slower/faster SSD comment. When I reset my computer, the drives both gave practically identical read/write speeds of roughly 450MBps/300MBps, respectively. And a note to those who try to replicate (in whole or in part) my setup with the P2 R4, if you want to maximize read speed at the expense of some write speed (for streaming samples), the best cache policy, which I have tested, is ReadAhead and WriteThru. WriteBack increases write speed at the expense of read speed.
Click to expand...
 
R4 & WD Blacks

All good for me. R4 diskless and 4x2TB WD Black drives. Playing it fast and loose - went with RAID 0, but have onsite and offsite full backup of course. On nMacPro this thing is right up there with the PCIe storage!!
 
My 8 TB R4 is filled. I'm starting to delete old projects.
I use it as a scratch drive for FCPX. Anyways I'm looking for suggestions. The Seagates that Promise suggest are only 5400 which seems to slow, no?
I want something at least 4TB so I have 16TB of storage in raid 0. (I don't really care about backups, it's mostly for personal use after I send it off...

This looks interesting.. http://www.bhphotovideo.com/c/product/1021396-REG/hgst_0s03664_4tb_7200_deskstar_nas_internal.html thoughts?
 
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I'm pretty bummed about not being able to find the Promise Pegasus2 R4 (Diskless) anywhere. Are there any other enclosures that someone could recommend that are thunderbolt 2?
 
orytek said:
I'm pretty bummed about not being able to find the Promise Pegasus2 R4 (Diskless) anywhere. Are there any other enclosures that someone could recommend that are thunderbolt 2?
Click to expand...

I find the price of empty enclosures astonishing.
Does anybody have both DAS and NAS in use and is there a massive difference between them?
Does one have advantages over the other?

I haven’t got a 2013Mac Pro yet but I may have in the not too distant and I wont be able to fit 5 drives in it so……….
 
Huh? I was asking about a possible recommendation to the r4 diskless.
Even more astonishing is the price with the included drives. When the R4 diskless was available, it was cheaper to purchase the drives separately. With better enterprise drives also.
 
orytek said:
Huh? I was asking about a possible recommendation to the r4 diskless.
Even more astonishing is the price with the included drives. When the R4 diskless was available, it was cheaper to purchase the drives separately. With better enterprise drives also.
Click to expand...

LOL, sorry. You did say diskless too.
 
orytek said:
Huh? I was asking about a possible recommendation to the r4 diskless.
Even more astonishing is the price with the included drives. When the R4 diskless was available, it was cheaper to purchase the drives separately. With better enterprise drives also.
Click to expand...

I called Promise and the diskless was discontinued.

You can get a thunder bay diskless enclosure from OWC for $460, Aikito and mono price also have some in the $2-300 range.
 
No longer use Seagate

I got mine yesterday. They now put in Toshiba drives.
You may find a older one still in stock that has the seagate's in it.



bcuzawd said:
Do we know what drives come with the Pegasus2 R4's? Are they WD Red, Blue, Black, Enterprise, etc...?

Reason for "ask" is I may buy the empty 4-bay ($700) and put my own drives in for cheaper.
Click to expand...
 
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