Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


17615 posts

Uber Geek
+1 received by user: 5069

Trusted
Lifetime subscriber

Topic # 87611 2-Aug-2011 18:07
Send private message

HI There!

We use WD Elements 2.5" Hard disks for client backups but recently have thought perhaps we should find something a bit faster. Could someone recommend something not massively more expensive but with better performance we could try as an alternative?

Create new topic
423 posts

Ultimate Geek
+1 received by user: 8


  Reply # 500950 2-Aug-2011 18:16
Send private message

You're not likely to see speeds above 30MB/s on USB 2.

If you're getting anywhere over 25 MB/s, then the bottleneck is likely the USB 2 interface, instead of the hard drive. I know that USB 2 is specified as 480Mbps (60 MB/s) but I've never seen a transfer speed over 35 MB/s. There's a lot of overhead involved.

Modern hard drives generally outperform the USB 2 interface.

If possible, you should transition to eSATA or USB 3.0.

3267 posts

Uber Geek
+1 received by user: 77

Trusted

  Reply # 500980 2-Aug-2011 19:29
Send private message

Get a 3.5" hard drive and definitely an external power supply. The 2.5" laptop hard drives are slower, and USB can not deliver enough power to run a fast hard drive. If you want to ensure high speed then it is better to buy a hard drive enclosure and fit your own hard drive. Find a drive with a large cache and rated for performance. Anything "green" will be slow.

Seagate (specifically, perhaps others also) had issues a few years ago due to squeezing too much into less platters. Their 7200.11 drives had reliability issues. I believe the 7200.12 drives are better, but not familiar with the ones released in the past 1-2 years. Whatever you get, it is worth reading up reviews and spend a bit of time searching for reports of issues.




You can never have enough Volvos!


gzt

10038 posts

Uber Geek
+1 received by user: 1518


  Reply # 500999 2-Aug-2011 19:51
Send private message

Are you imaging the disk? or some other kind of backup like robocopy? ,etc? Because it is possible you might get better performance changing the method, than changing the hardware. What size is your typical backup operation?





17615 posts

Uber Geek
+1 received by user: 5069

Trusted
Lifetime subscriber

  Reply # 501034 2-Aug-2011 21:06
Send private message

Shadowprotect.

11 posts

Geek


  Reply # 501057 2-Aug-2011 21:49
Send private message

networkn: Shadowprotect.


Are you using an internal staging drive and Image Repository?

Is this HDD to be used / updated everyday?

Full or incremental backup's?   And what is your rotation cycle?

Cheers!

gzt

10038 posts

Uber Geek
+1 received by user: 1518


  Reply # 501068 2-Aug-2011 22:00
Send private message

networkn: Shadowprotect.


Next time you have it running, what kind of throughput does it show?

If you are using the gui it is displayed in the volume tab of the job information. Not sure where to find it if you are using other methods.



17615 posts

Uber Geek
+1 received by user: 5069

Trusted
Lifetime subscriber

  Reply # 501070 2-Aug-2011 22:02
Send private message

Was reporting 100MB+ a second but that's not really possible (Write caching was enabled).

14066 posts

Uber Geek
+1 received by user: 2514

Trusted
Subscriber

  Reply # 501074 2-Aug-2011 22:11
Send private message

USB 2.0 disks or even flash drives are really slow, they don't go near as fast as the theoretical bandwidth available. A modern 2.5" disk can do 80-120MB/sec, so USB or eSata is really necessary to reach maximum speeds.




AWS Certified Solution Architect Professional, Sysop Administrator Associate, and Developer Associate
TOGAF certified enterprise architect
Professional photographer


gzt

10038 posts

Uber Geek
+1 received by user: 1518


  Reply # 501079 2-Aug-2011 22:22
Send private message

networkn: Was reporting 100MB+ a second but that's not really possible (Write caching was enabled).

I guess that was a silly question. Time total vs image size might be better.

11 posts

Geek


  Reply # 501080 2-Aug-2011 22:24
Send private message

gzt:
networkn: Was reporting 100MB+ a second but that's not really possible (Write caching was enabled).

I guess that was a silly question. Time total vs image size might be better.


Or use the Physical disk writes bytes/sec from Perfmon

gzt

10038 posts

Uber Geek
+1 received by user: 1518


  Reply # 502517 5-Aug-2011 18:49
Send private message

I have some marginal suggestions. Not familiar with SP, here's what I was going to suggest if the transfer rate is suboptimum for USB2. If it is compressing during the create (or esp. encrypting) that will be cpu bound on slower machines. Might get better overall transfer by reducing the SP compression ratio (no idea if reduction is possible).

Depending on network quality there *might* be an opportunity get /slightly/ better performance moving to a small NAS device. I'd guess there is a bit of skill in picking one in your price range which will give the performance required but might be worth a shot if you have one lying around to try.

Like Niel's suggestion as well.

[edit: stating the obvious but depending on numbers a usb3 card for each machine might be cost effective] 

Create new topic

Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Intel introduces new NUC kits and NUC mini PCs
Posted 16-Aug-2018 11:03


The Warehouse leaps into the AI future with Google
Posted 15-Aug-2018 17:56


Targus set sights on enterprise and consumer growth in New Zealand
Posted 13-Aug-2018 13:47


Huawei to distribute nova 3i in New Zealand
Posted 9-Aug-2018 16:23


Home robot Vector to be available in New Zealand stores
Posted 9-Aug-2018 14:47


Panasonic announces new 2018 OLED TV line up
Posted 7-Aug-2018 16:38


Kordia completes first live 4K TV broadcast
Posted 1-Aug-2018 13:00


Schools get safer and smarter internet with Managed Network Upgrade
Posted 30-Jul-2018 20:01


DNC wants a safer .nz in the coming year
Posted 26-Jul-2018 16:08


Auldhouse becomes an AWS Authorised Training Delivery Partner in New Zealand
Posted 26-Jul-2018 15:55


Rakuten Kobo launches Kobo Clara HD entry level reader
Posted 26-Jul-2018 15:44


Kiwi team reaches semi-finals at the Microsoft Imagine Cup
Posted 26-Jul-2018 15:38


KidsCan App to Help Kiwi Children in Need
Posted 26-Jul-2018 15:32


FUJIFILM announces new high-performance lenses
Posted 24-Jul-2018 14:57


New FUJIFILM XF10 introduces square mode for Instagram sharing
Posted 24-Jul-2018 14:44



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.