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.
View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 


4579 posts

Uber Geek
+1 received by user: 950

Moderator
Trusted
Lifetime subscriber

  Reply # 194855 9-Feb-2009 10:00
Send private message

well it looks to me like my WHS hates it when more than one thing is happening at once.

e.g. I get mad stuttering when I'm watching something from the videos folder in the lounge, and another PC is backing up.  OR, if I'm ripping a DVD to the movies folder, and watching something in the lounge - my lounge stream just gets really choppy. 

If only one thing is happening at once - e.g. watching a show/dvd in the lounge, then everything is fine.

I guess something to do with how the storage pool works?  lots of read/writes at the same time makes for a painful experience.  I can imagine this is the case if its writing across multiple drives at once, or reading from multiple drives at once.

I'm not sure upping my bandwidth will help with this.  Perhaps I'll just need to stick to one job at a time.

BDFL - Memuneh
61008 posts

Uber Geek
+1 received by user: 11844

Administrator
Trusted
Geekzone
Lifetime subscriber

  Reply # 194858 9-Feb-2009 10:26
Send private message

If you have not already, make sure all drives have the property sets to advanced cache (device manager, settings). Also there will be a LOT of I/O activity while it is doing the initial duplication and balancing.

This should last a couple of days by the looks of it - your storage pool is quite large and just enabled duplication...




2584 posts

Uber Geek
+1 received by user: 5

Mod Emeritus
Trusted
Lifetime subscriber

  Reply # 194861 9-Feb-2009 10:44
Send private message

OK couple of things that I have found.

Set the backups to happen when you are not going to be using the PC's. During the backups both the performace on the PC being backed up and on the server will be heavily impacted.

Use gig between your heavier use PC's and the home server. You can quite easily flood 100meg.

I do not use duplication on folders that require high performance ie HD movies. The overhead is quite high and because of the size of the files seems to be even worse.
It might be OK on a higher end server then what I am running but I find the overhead just a little too much.
Running a P4 3.0 HT







Media centre PC - Case Silverstone LC16M with 2 X 80mm AcoustiFan DustPROOF, MOBO Gigabyte MA785GT-UD3H, CPU AMD X2 240 under volted, RAM 4 Gig DDR3 1033, HDD 120Gig System/512Gig data, Tuners 2 X Hauppauge HVR-3000, 1 X HVR-2200, Video Palit GT 220, Sound Realtek 886A HD (onboard), Optical LiteOn DH-401S Blue-ray using TotalMedia Theatre Power Corsair VX Series, 450W ATX PSU OS Windows 7 x64

8025 posts

Uber Geek
+1 received by user: 387

Trusted
Subscriber

  Reply # 194866 9-Feb-2009 11:12
Send private message

freitasm: If you have not already, make sure all drives have the property sets to advanced cache (device manager, settings). Also there will be a LOT of I/O activity while it is doing the initial duplication and balancing.

This should last a couple of days by the looks of it - your storage pool is quite large and just enabled duplication...


I always chuckle when I see that one in tweak guides, it says "advanced" and "performance" it must be good!

Sadly what you see here is one of the negative side effects of the modern tech blogsphere. Copy and paste journalism - where authors aren't even testing on investigating the tweaks they are suggesting anymore! 

See here for the truth about the "Advanced Performance" straight from Microsoft.
http://technet.microsoft.com/en-us/magazine/2007.04.windowsconfidential.aspx


BDFL - Memuneh
61008 posts

Uber Geek
+1 received by user: 11844

Administrator
Trusted
Geekzone
Lifetime subscriber

Reply # 194867 9-Feb-2009 11:19
Send private message

I don't see a problem. It's an option that tells you feel it's ok to ignore flush requests and just keep doing your processing - things will accumulate if needed to and if you run a stable system, with power backup then why not?




8025 posts

Uber Geek
+1 received by user: 387

Trusted
Subscriber

  Reply # 194871 9-Feb-2009 11:32
Send private message

Here's another quote about the setting:


The Enable advanced performance setting is actually a compatibility setting for software that took advantage of a bug in early versions of Windows. The bug let programs believe that a piece of data had been written to the physical layer of the disk when it could still in fact be processing in the drive buffer. When Microsoft later fixed that bug there was so many reports about database programs beginning to perform slowly that they had to bring the buggy behavior back in. This settings is a leftover from that period and no properly programmed software of today should retain this behavior, but very old database engines might.

Their choice of name for this setting is quite unfortunate.





4579 posts

Uber Geek
+1 received by user: 950

Moderator
Trusted
Lifetime subscriber

  Reply # 194877 9-Feb-2009 12:41
Send private message

freitasm: If you have not already, make sure all drives have the property sets to advanced cache (device manager, settings). Also there will be a LOT of I/O activity while it is doing the initial duplication and balancing.

This should last a couple of days by the looks of it - your storage pool is quite large and just enabled duplication...


Fairly sure my storage pool is fully duplicated now, so would i gain anything by enabling this?  it also says that it's recommended only for disks with a backup power supply as it increases the risk of data loss if the disk loses power.....

I don't have a ups if that's what it's referring to

8025 posts

Uber Geek
+1 received by user: 387

Trusted
Subscriber

  Reply # 194896 9-Feb-2009 13:56
Send private message

Probably depends on your usage when I mucked around with some hard drive benchmarks with "Advanced Performance" enabled I saw a slight increase in sequential write speed 5-10MB/s, however I also saw 10ms higher seek times and ~ 5-10MB/s lower burst write rates.  If I recall recorrectly reads weren't really changed much.

I suggust you do some benchmarks when no one is using the WHS.  Also check perfmon disk counters when people are actively using the WHS.

247 posts

Master Geek
+1 received by user: 10

Trusted

  Reply # 194978 9-Feb-2009 20:24
Send private message

Nety:
Set the backups to happen when you are not going to be using the PC's. During the backups both the performace on the PC being backed up and on the server will be heavily impacted.


Yes agree with this, it can make a difference.

Nety:
Use gig between your heavier use PC's and the home server. You can quite easily flood 100meg.


I'm planning on doing this also

Nety:
I do not use duplication on folders that require high performance ie HD movies. The overhead is quite high and because of the size of the files seems to be even worse.


Have not found this but I'm running 2 gigs on a dual core system

1 | 2 
View this topic in a long page with up to 500 replies per page 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.