Slow transfer speeds, hard drive formatting related?

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Slow transfer speeds, hard drive formatting related?

Postby Santicity » Fri Jun 15, 2012 11:56 am

Hi there,

I just purchased the Synology DS212J. I used two Western Digital Hard Drives Green, 3TB Model #WD30EZRX. I formatted them using Synology DSM. I am running the latest firmware: 4.0 2233. Everything is connected via a Linksys E2000 router, which should be a gigabit router.

The problem is when I'm transfering files. I'm transferring videos, some 150mb, some larger. When I do it wireless they transfer at about 2 mb/s. If I do it wired, they transfer about 10 mb/s. Now while I don't expect it to get anywhere as fast as Synology's advertised speeds since their networks have been optimized, I did expect it to transfer a little faster, at least 10 mb/s over wireless at the very, very least.

I read this this thread over at arstechnica, so I ran fdisk -lu I got the results:
Code: Select all
Disk /dev/sda: 2199.0 GB, 2199023255040 bytes
255 heads, 63 sectors/track, 267349 cylinders, total 4294967295 sectors
Units = sectors of 1 * 512 = 512 bytes

   Device Boot      Start         End      Blocks  Id System
/dev/sda1               1  4294967295  2147483647+ ee EFI GPT
fdisk: device has more than 2^32 sectors, can't use all of them

Disk /dev/sdb: 2199.0 GB, 2199023255040 bytes
255 heads, 63 sectors/track, 267349 cylinders, total 4294967295 sectors
Units = sectors of 1 * 512 = 512 bytes

   Device Boot      Start         End      Blocks  Id System
/dev/sdb1               1  4294967295  2147483647+ ee EFI GPT

As you can see, the Start is not divisible by 8. I'm not sure how big of a problem this is, so I tried to reformat. Unfortunately I got the exact same results, and both start at 1.

Does anybody know if the Start value has to be divisible by 8? What happens if it's not? Why are my trasnfer speeds so slow? Any insight or suggestions would be highly appreciated!
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Re: Slow transfer speeds, hard drive formatting related?

Postby manofsteel » Sun Jun 17, 2012 6:42 pm

Hi Santicity,
I believe this is a known issue with DSM 4.0 and slow transfer speeds.
We've been told it would be fixed in DSM 4.1.

In the mean time, you can try DSM 3.2 1955, and try the speed test again.
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Re: Slow transfer speeds, hard drive formatting related?

Postby Santicity » Mon Jun 18, 2012 7:46 am

How do I downgrade?
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Re: Slow transfer speeds, hard drive formatting related?

Postby manofsteel » Wed Jun 20, 2012 1:33 am

Check out this thread that I started in the new release section.

http://forum.synology.com/enu/viewtopic.php?f=199&t=51718#p198638

I used method 1 with no issues.
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Re: Slow transfer speeds, hard drive formatting related?

Postby pureheart » Fri Jul 13, 2012 6:32 am

manofsteel wrote:Hi Santicity,
I believe this is a known issue with DSM 4.0 and slow transfer speeds.
We've been told it would be fixed in DSM 4.1.

In the mean time, you can try DSM 3.2 1955, and try the speed test again.


4.1 is OUT! Has anyone checked if it fixes the issue???
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Re: Slow transfer speeds, hard drive formatting related?

Postby henkg » Fri Jul 13, 2012 7:43 am

Santicity wrote:Everything is connected via a Linksys E2000 router, which should be a gigabit router.
I'm transferring videos, some 150mb, some larger. When I do it wireless they transfer at about 2 mb/s. If I do it wired, they transfer about 10 mb/s.

A. 2 MB/s wireless is typical for a 54g connection (the 'N' protocol should give 6 - 7 MB/s)
B. 10 - 12 MB/s wired is typical for a 100 mbit connection.

Maybe the network card in your PC/laptop does not support the N protocol and/or gigabit.
A. Check your router settings, and WiFi card settings on the laptop.
B. Check your router settings, NIC settings on the laptop, network cables. The established connection between DS and router can be seen with: DSM | Control panel | Network. Tab Network interface.
DS412+. 4x WD40EFRX, RAID5. DSM 5.0-4493 update 1
DS210j. 2x HD204UI, RAID1. DSM 5.0-4493 update 2
Windows 8.1 Pro. Router Netgear WNDR3700. Switch TP-Link TL-SG1008D. AcRyan Mini v1. UPS APC BE700G-GR. Ipcam Edimax IC-3010.
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