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Portable 4TB SSD deals

  
 
Zenon Char
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p.2 #1 · p.2 #1 · Portable 4TB SSD deals


LBJ2 wrote:
FWIW. This kit ZikeDrive + Samsung 4TB has worked out very well for me so far.
https://www.fredmiranda.com/forum/topic/1826580


Thanks



Nov 21, 2023 at 12:13 PM
Abbott Schindl
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p.2 #2 · p.2 #2 · Portable 4TB SSD deals


Chris Dees wrote:
I have a 14Ē MBP M1 Max
AFAIK all Macís (apple silicon) have besides TB3/4 and USB4 only USB 3.1 gen 2 interface which is max 10 Gbs.
The T9 has an USB 3.1 gen 2x2 interface which the Macís doesnít support.


I believe things changed since the M1 machines. Both the M2 MBP Max and M2 Studio Ultra have Thunderbolt 4 ports that support 40 Gb/s.



Nov 21, 2023 at 12:22 PM
jwpstl
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p.2 #3 · p.2 #3 · Portable 4TB SSD deals


Abbott Schindl wrote:
I believe things changed since the M1 machines. Both the M2 MBP Max and M2 Studio Ultra have Thunderbolt 4 ports that support 40 Gb/s.


That would be when using a compatible Thunderbolt device. But there's no support for the bandwidth method of a USB 2x2 device so you max out with USB 3.1 at 10gbps. At least that's how I understood it from my research.



Nov 21, 2023 at 12:52 PM
Chris Dees
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p.2 #4 · p.2 #4 · Portable 4TB SSD deals


The M1 machines have Thunderbolt 3 (in my post TB3) and thatís 40GBs

Abbott Schindl wrote:
I believe things changed since the M1 machines. Both the M2 MBP Max and M2 Studio Ultra have Thunderbolt 4 ports that support 40 Gb/s.




Nov 21, 2023 at 01:10 PM
Chris Dees
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p.2 #5 · p.2 #5 · Portable 4TB SSD deals


eyal wrote:
Got it but a TB4 connection via the USB-C port should be full speed/40 Gbs


Yes, but the Samsung T9 has no TB4 connection, so max speed on a silicon Mac is 10 GBs.This is an Apple shortcoming.
All those different USB specs is very confusing (at least for me )

Wikipedia
Thereís a nice overview of the standard.



Nov 21, 2023 at 02:08 PM
Abbott Schindl
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p.2 #6 · p.2 #6 · Portable 4TB SSD deals


Chris Dees wrote:
Yes, but the Samsung T9 has no TB4 connection, so max speed on a silicon Mac is 10 GBs.This is an Apple shortcoming.
All those different USB specs is very confusing (at least for me )


Looks like you're right. I bought mine from B&H and their description includes this note:
"To achieve maximum advertised speeds, please make sure your computer or host device is certified to support the 20 Gb/s USB 3.2 Gen 2x2 connection. Apple devices, including those with Thunderbolt/USB4, do not support 20 Gb/s USB 3.2 Gen 2x2 and will be limited to 10 Gb/s USB 3.2 Gen 2."

Still not bad potential performance though.



Nov 21, 2023 at 03:45 PM
eskimochaos
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p.2 #7 · p.2 #7 · Portable 4TB SSD deals


These drives dont do 20GB/s let alone 10GB/s so what exactly am I missing?


Nov 21, 2023 at 09:53 PM
eskimochaos
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p.2 #8 · p.2 #8 · Portable 4TB SSD deals


Have both a 4TB T7 and T9 - they have been exceptional so far.


Nov 21, 2023 at 09:59 PM
Abbott Schindl
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p.2 #9 · p.2 #9 · Portable 4TB SSD deals


eskimochaos wrote:
These drives dont do 20GB/s let alone 10GB/s so what exactly am I missing?


What you're missing is 10 GB/s vs 10Gb/s. The ports are rated in the laterwhile you're thinking in the former ( larger) units.



Nov 21, 2023 at 10:17 PM
eskimochaos
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p.2 #10 · p.2 #10 · Portable 4TB SSD deals


Abbott Schindl wrote:
What you're missing is 10 GB/s vs 10Gb/s. The ports are rated in the laterwhile you're thinking in the former ( larger) units.


Huh? I am still confused. 10 GB/s in 10,000 MB/s which these drives cant do anyway.....??

The T9 is rated for like 2,800MB/s so why does it need a 20GB/s port?



Nov 22, 2023 at 06:26 AM
 


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Chris Dees
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p.2 #11 · p.2 #11 · Portable 4TB SSD deals


One is Gigabytes and the other is Gigabits, a factor 8 difference


Nov 22, 2023 at 09:51 AM
RustyBug
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p.2 #12 · p.2 #12 · Portable 4TB SSD deals


eskimochaos wrote:
Huh? I am still confused. 10 GB/s in 10,000 MB/s which these drives cant do anyway.....??

The T9 is rated for like 2,800MB/s so why does it need a 20GB/s port?


8 bits = 1 Byte

2,800 MB/s = 2.8GB/s

20Gb/s (note the little "b" = bits, not "B" Bytes) = 2.5GB/s (20/8=2.5)

If it were only 10Gb/s, that would be 1.25GB/s ... thus the T9 would be bottlenecked at the 10Gb/s or 1.25GB/s rate, and not able to achieve its 2.8GB/s capability.

Others can check my math, but I think that's where you're not picking up on the BYTES (B) vs. bits (b) as a factor of 8. Easy to miss, I know it tripped me up more than once in years past. The worst part is that not all marketing material gets the B vs. b correct sometimes.

HTH






Nov 22, 2023 at 10:52 AM
eskimochaos
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p.2 #13 · p.2 #13 · Portable 4TB SSD deals


RustyBug wrote:
8 bits = 1 Byte

2,800 MB/s = 2.8GB/s

20Gb/s (note the little "b" = bits, not "B" Bytes) = 2.5GB/s (20/8=2.5)

If it were only 10Gb/s, that would be 1.25GB/s ... thus the T9 would be bottlenecked at the 10Gb/s or 1.25GB/s rate, and not able to achieve its 2.8GB/s capability.

Others can check my math, but I think that's where you're not picking up on the BYTES (B) vs. bits (b) as a factor of 8. Easy to miss, I know it tripped me up more than once in years past. The worst part is that not all marketing material gets the
...Show more

Ahhh - that makes more sense. What a cluster F computers have become.



Nov 22, 2023 at 08:16 PM
Gregory Edge
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p.2 #14 · p.2 #14 · Portable 4TB SSD deals


I just ordered a Crucial 4tb NVMe SSD and a hub the goes along with Mac Mini footprint from Amazon. Black Friday specials. If the hub works out it will reduce desktop devices and give me a small increase in performance over the 4tb HDD I am using now.

I did not go with the fastest SSD because I am still restricted by the speed of Thunderbolt. If it was an internal drive I would spend the extra money for speed.



Nov 23, 2023 at 09:11 AM
mark1958
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p.2 #15 · p.2 #15 · Portable 4TB SSD deals


One thing to keep in mind .. at some point ... Macs will allow faster connections and will be nice to have a device that will maximize speed


Nov 23, 2023 at 02:16 PM
Gregory Edge
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p.2 #16 · p.2 #16 · Portable 4TB SSD deals


Mark, I agree but for my needs this is a huge speed improvement over a 7200 RPM HDD. The unit I bought is 5000MB/s. It is no slouch but not the fastest on the market. In a year or two I will upgrade my computer and go with something newer if need be.

I usually buy things when I need them not when something new launches or a benchmark test says My stuff is slow. I loved my 2010 Mac Pro and kept that as my main computer until I could not update the OS. Even then I wait until I was two behind. I usually buy used or Apple refurbished.



Nov 23, 2023 at 02:34 PM
mark1958
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p.2 #17 · p.2 #17 · Portable 4TB SSD deals


I understand. I am still in a bit of a dilemma what to do. I remember when I transferred some of my really old files with really old hard drives and it took forever for half a gigabyte

Gregory Edge wrote:
Mark, I agree but for my needs this is a huge speed improvement over a 7200 RPM HDD. The unit I bought is 5000MB/s. It is no slouch but not the fastest on the market. In a year or two I will upgrade my computer and go with something newer if need be.

I usually buy things when I need them not when something new launches or a benchmark test says My stuff is slow. I loved my 2010 Mac Pro and kept that as my main computer until I could not update the OS. Even then I wait
...Show more




Nov 24, 2023 at 01:23 PM
RoamingScott
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p.2 #18 · p.2 #18 · Portable 4TB SSD deals


You should prioritize getting any files on a spinning drive duplicated to a non spinning drive before the spinning drive craps out on you.


Nov 24, 2023 at 01:26 PM
Rajan Parrikar
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p.2 #19 · p.2 #19 · Portable 4TB SSD deals


Last year in June I bought this 16TB Thunderblade array for $3349. Today is it is available for $2279!

https://eshop.macsales.com/shop/owc-thunderblade

Excellent unit, by the way.



Nov 25, 2023 at 03:10 AM
artsupreme
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p.2 #20 · p.2 #20 · Portable 4TB SSD deals


Rajan Parrikar wrote:
Last year in June I bought this 16TB Thunderblade array for $3349. Today is it is available for $2279!

https://eshop.macsales.com/shop/owc-thunderblade

Excellent unit, by the way.


Nice. I have been looking for a Drobo 5D3 replacement because mine is on its last leg and could fail any day now. Seeing that this is an SSD unit, I would expect them to be more reliable than spinning drives. With these SSD raid units, when you buy the 16TB model does this mean you get 16TB of space or would you only get 8TB of space with raid?

Anyone else have experience with these? There's not a lot of TB4 options on the market but I would hope they catch up next year after the chip shortage.



Nov 25, 2023 at 02:31 PM
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