Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Extremely Slow speeds using e-sata and usb 3 external raid box

30 Mar 2012   #1
juznut

Windows 7 home premium 64 bit
 
 
Extremely Slow speeds using e-sata and usb 3 external raid box

Hi there guys,

I have a hotway 4 bay usb 3.0/e-sata box that is currently in RAID and when connected to either e-sata or USB3.0 I am experiencing really slow speeds. On average 2.48MB/s.

To describe what happens, the speed shows anywhere from 70-200MB/s when I first try to copy things over (File types and sizes seem to be irrelevant as Ive tried different types and sizes), about 2 seconds in to the file transfer it then seems to freeze for a moment and then the speed slows drastically to above mentioned speeds.


Here are some details on my system,

windows 7 64bit home premium
gigabyte z68-ud5-b3
corsair force gt 120gb ssd

hotway 4 bay usb3.0/esata PRORAID box
with 3x WD caviar green and 1X Seagate barracuda all 1TB
(Currently in raid 10, but experience this in RAID 5 aswell, have not tried RAID 0/1)

Any help would be greatly appreciated!


My System SpecsSystem Spec
.

30 Mar 2012   #2
JimLewandowski

 
 

Task Manager -> Resource Monitor (tile at bottom left)

Once that's opened, click the DISK tab at the top. Slide the slider to have the lower portion be most of the screen. It is showing most active files and their rate of xfer AND the I/O time itself (rightmost column).

Fire up your xfer and go back and see what the numbers look like on this Resource Monitor screen. Screen shot and repost.
My System SpecsSystem Spec
31 Mar 2012   #3
juznut

Windows 7 home premium 64 bit
 
 

Hi JimLewandowski,

THanks for your reply, please find attached screenies of what I interpreted as what you asked of me.

Your help is greatly appreciated


Attached Thumbnails
Extremely Slow speeds using e-sata and usb 3 external raid box-before.jpg   Extremely Slow speeds using e-sata and usb 3 external raid box-rightafter.jpg   Extremely Slow speeds using e-sata and usb 3 external raid box-afterthat.jpg  
Attached Images
Extremely Slow speeds using e-sata and usb 3 external raid box-copywindow.jpg Extremely Slow speeds using e-sata and usb 3 external raid box-copywindow2.jpg 
My System SpecsSystem Spec
.


01 Apr 2012   #4
JimLewandowski

 
 

You need the MIDDLE pane (DISK I/O) slid open (click arrow to expand?) as that's 99% of the important data. The top and bottom don't have much useful information for this task.
My System SpecsSystem Spec
02 Apr 2012   #5
juznut

Windows 7 home premium 64 bit
 
 

I think this is better,
Thanks agian jim, if you can help it would be great


Attached Thumbnails
Extremely Slow speeds using e-sata and usb 3 external raid box-30mbps.jpg   Extremely Slow speeds using e-sata and usb 3 external raid box-16mbps.jpg   Extremely Slow speeds using e-sata and usb 3 external raid box-10mbps.jpg   Extremely Slow speeds using e-sata and usb 3 external raid box-5mbps.jpg  
My System SpecsSystem Spec
04 Apr 2012   #6
JimLewandowski

 
 

Screen shot #1 is good performance. 5 megaBYTES xferrd in .389 seconds or roughly 15 MB/sec throughput.

The 2nd-4th screens, something is seriously awry. Xferring only 80K/sec but it's taking 20 SECONDS?

I assume you're copying FROM drive G to drive J.

Also, the disk queue length for J is 5 (normal, 1st screen), but shoots up to 100 (2nd-4th). That implies to me the performannce slowdown IS within the disk subsystem (vs. CPU wait or some other Windows arena).

Can you give me more background on your RAID? I know what RAID is but am not up to snuff on each RAID subtype/configuration.

Explain what type of drives/configuration G and J are?
My System SpecsSystem Spec
04 Apr 2012   #7
juznut

Windows 7 home premium 64 bit
 
 

G:/ is just a single drive
J:/ is currently in raid 5, which is similar to raid 0 but with parity striped across all four disks.
So performance i think shouldn't be slowed at all..
My System SpecsSystem Spec
05 Apr 2012   #8
JimLewandowski

 
 

OK. I'm guessing one or more of those RAID drives is whacked. Others here might be able to help you with SMART readings to see what shape each physical drive in that RAID is in.

There might be some HDtach (or HDtune)-like product that lets you drill down and see the performance of each PHYSICAL drive in that RAID.
My System SpecsSystem Spec
Reply

 Extremely Slow speeds using e-sata and usb 3 external raid box




Thread Tools





Similar help and support threads
Thread Forum
Extremely Slow External HDD <100kb/s
My WD 1tb external hard drive transfers data extremely slow. I.e. When I transfer a 300mb video file either to or from the computer it takes a few of hours to transfer. I have tried formating it which took somewhere between 12 to 24 hrs and still no improvement. Does this mean that my hard drive is...
Hardware & Devices
Raid 5 Slow Transfer Speeds
Hi, I have read somewhere that Raid 5 is not supported in Windows 7. Is this true please? After my near loss of data today I rebuilt my Raid to 5 with three Seagate Barracuda hard drives each at 2 TB. All are 7200 RPM speed and I am copying back my data from a new 3 TB Seagate Hard drive...
Hardware & Devices
Extremely slow transfer speed from external hard drive
Hi Everyone. I have recently had to format my hard drive and re-install windows. I have also had to replace the motherboard, CPU and power supply. I borrowed a 1.5 TB Freecom firewire external hard drive from a friend to back-up important data before the format, but the transfer speed is...
Hardware & Devices
PCI-E Sata II RAID 0 slow....driver issues?
Well, I've searched now for several days and played with every setting I can think of, but still can't coax better than average performance out of a recent install of RAID 0 using an Silicon Image 3132 based PCI-e (x1) Sata2 card (should have bought the UD3LR!). I've convinced myself it's a driver...
Performance & Maintenance
Problem With Wired Internet Connection Extremely Slow Speeds
It all started out a week ago with random times where my internet speed would drop drastically but after about 5 minutes it would go back to normal. Then about 5 days ago I couldn't connect to cable with my cable modem the activity light would just pop green over and over again. I used cycling over...
Network & Sharing
Boot time extremely slow when external hd connected
Hi,I have windows 7 installed, and the boot up time was under 1 min, i noticed when i connected my external hard drive it will go through the normal bootup checks and then i get a black screen with a white curser that blinks in the top left corner of the screen.It says on this blank screen section...
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 12:24.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App