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08-31-2011, 09:16 PM #1Junior Guru
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Is a cloud VPS with 2.8MB/s disk speed fine?
Hi,
I'm on a cloud VPS but the disk speed when I run dd command (dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync) is always 2.8MB/s.
Should I keep this VPS or get refunded because the provider is willing to give me a full refund.
Thank for reading.
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08-31-2011, 09:21 PM #2Aspiring Evangelist
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I would ask for a refund after giving the host a chance to fix it.
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08-31-2011, 09:26 PM #3Junior Guru
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08-31-2011, 09:45 PM #4WHT Addict
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You may want to look into getting a new Host. Support tickets should be answered within 2 minutes, not 2 days.
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08-31-2011, 10:04 PM #5Web Hosting Master
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May I ask what provider this is with? It's possible that the storage node has some hardware failure. You said it's a storage server? Generally, they have 10 - 25+ hard drives, and that can be a pain to keep everything fixed. Or maybe someone is using R1Soft. R1Soft can destroy I/O. Contact your provider.
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08-31-2011, 10:13 PM #6Eternal Member
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R1Soft might have an impact on I/O but certainly not that much in normal cases.
That's shockingly slow and will negatively impact performance for almost every application. I'd leave if it can't be fixed.MediaLayer, LLC - www.medialayer.com Learn how we can make your website load faster, translating to better conversion rates for your business!
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08-31-2011, 10:17 PM #7Junior Guru Wannabe
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About 10mb/s is the lowest standard for me, your result will make you crazy if you try running windows on that VPS.
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08-31-2011, 10:20 PM #8Web Hosting Master
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08-31-2011, 10:25 PM #9Newbie
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08-31-2011, 10:35 PM #10Aspiring Evangelist
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Anyone who uses RAID5 in production is not doing themselves or their customers any favors. Not only is it slow, it's also HUGELY risky with data vs RAID10.
Those speeds are atrocious, maybe 1/10th or 1/20th where they should be for just an average provider. I would contact the host and ask them to fix it, then ask for a refund if they can't.
Best,
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08-31-2011, 10:52 PM #11Junior Guru
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08-31-2011, 11:00 PM #12Location = SoapBox
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brutal to use RAID5 or RAID50 in a production SAN for cloud computing. The reason providers do it is 2 fold. 1) because they get more usable disk and 2) because they can hide poor performance with very good read speeds. Sites appear to load snappy, etc relative to the amount of disk space you are saving - that is until you try and do any heavy writes - then good luck...
to your point, kinda scary to think RAID5 - I would hazard a guess that SAN isnt replicated or redundant either..www.cartika.com
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08-31-2011, 11:03 PM #13Location = SoapBox
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I'm with you - never see anything like this. Mind you, the SAN being RAID5 and saturated? R1soft could cause some issues for sure. You need to give R1Soft resources to be effective and efficient. it doesnt do well in environments without appropriate overhead.. I still cant see R1soft being the root cause here - though certainly wouldnt help if there were a bunch of VMs being backed up on a SAN like this...
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08-31-2011, 11:06 PM #14Eternal Member
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Indeed, the root cause is likely just poor infrastructure. RAID 5 wasn't a good choice either. There's too many providers out there offering "clouds" with extremely poor disk I/O like this. I don't know how they think this type of performance is acceptable to be honest.
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09-01-2011, 06:02 AM #15Web Hosting Master
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If I do a dd test on either one of my dogs they can wag their tails faster than 1.9 MB/s... and what sort of 'cloud' uses raid 5 for the love of cheese!
They have done you up like a kipper my son... time to move on, I just left the GNAX cloud because it only gets 10 - 20 MB/s and that was used purely as a test rig.█ -> INCEPTION HOSTING LIMITED Since 2010!
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09-15-2011, 10:23 AM #16Junior Guru
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I won this VPS on a bid at very dirty cheap price Maybe it was their way to kick me out.
Because when I requested the refunded, they was very kind to do this (they even offered this refund solution at first time I reported this issue).
And in their email, they promised to give me a Free trial in the next 2 weeks (next 2 weeks is now), but when I came back to their client system, I was trying to login, always failed, it seems they've removed all of my records.
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09-15-2011, 10:28 AM #17Web Hosting Master
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But of course 2.8MB/s disk speed is perfectly fine - after all it is running on water vapour
edit: Name the provider!
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09-15-2011, 12:08 PM #18Junior Guru
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09-15-2011, 01:09 PM #19WHT Addict
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09-17-2011, 11:04 PM #20Aspiring Evangelist
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09-18-2011, 04:00 AM #21Junior Guru
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2.8MB/s is not good. What would you do if you actually had to restore backup for a live production server--how long would that take at 2.8MB/s?!
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09-19-2011, 04:55 AM #22Junior Guru Wannabe
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I'm getting 133MB/S on a cloud.. so that's probably screwed up, ask for a refund
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