ds918+ transfer speed (upgrade question)

[Nbd508]

Hey all, super easy question I'm sure...

I see lots of people go and upgrade to 2.5/5/10 gb nics to sap out faster transfers of data from their NAS. One thing I'm never seeing is the drives they are utilizing to make this worth the effort/cost.

I have 4 of these:
(https://www.newegg.com/seagate-ironwolf-st3000vn007-3tb/p/N82E16822179006)

 

Now the drives claim speed up to 250 MB/s and on a crystaldiskmark test I reach about half of that. So I figure that's about 1/4GB speed on a 1gb connection... So I don't think I'd see any increase in speed/bandwith from upgrading this. Am I completely missing something?

Thanks.

 

[Electronics Wizardy]

With raid the speed go up, so 4 disks i a raid 5 can typically be 3x the speed of a single disk in sequentical transfers, so >300mB/s here.

 

Drives also get slower the farter in you are as the diameter of the platters get smaller. You would probably hit 250mB/s on a near empty drive.

[Needfuldoer]

18 minutes ago, Nbd508 said:

Now the drives claim speed up to 250 MB/s and on a crystaldiskmark test I reach about half of that. So I figure that's about 1/4GB speed on a 1gb connection... So I don't think I'd see any increase in speed/bandwith from upgrading this. Am I completely missing something?

250 MB/sec (megabytes per second) is 2 Gb/sec (gigabits per second).

 

Remember, there are 8 bits in a byte. Capitalization matters in these particular initialisms!

[Nbd508]

Gotcha, I chose to run raid 10 because I use the system in 3 ways mainly.

First, backup of computers at home, crazy I know.
Second, camera access/recording for security.
Third, permit access to temporary users for file transfers when working on projects like large documents/videos and such.

Not sure I'll ever need more space since everything is only saved for a certain time and re-written, speed and recovery are the main factors.

Thanks for the input @Electronics Wizardy

@Needfuldoer  Not sure if I mis-typed does this make more sense?

[Needfuldoer]

14 minutes ago, Nbd508 said:

  Not sure if I mis-typed does this make more sense?

That's exactly what I'd expect to see over a saturated Gigabit connection: just under 120 MB/sec.

[Nbd508]

Just now, Needfuldoer said:

That's exactly what I'd expect to see over a saturated Gigabit connection: just under 120 MB/sec.

So would it not be reasonable to assume that the drive would still be a bottleneck on 2.5?

[Electronics Wizardy]

3 minutes ago, Nbd508 said:

So would it not be reasonable to assume that the drive would still be a bottleneck on 2.5?

Its hard to know the exact speed on 2.5, but you will almost certainly get more speed as your not network limited. That drive config is capable of filling 2.5gbe though.

[Levent]

Monitor your NAS CPU usage too. I have noticed that they usually run pretty close to being maxed out with RAID10/RAIDZ setups.