1MB/s read/write speed in fusion drive

Hi,
My iMac 2012 stopped booting so I took it to the store and they told me that the database saying which files are in the SSD and the HD was broken (I don't know what that means exactly). They had fixed it (at least they claim so).
I restored the disk from a time machine copy and now the iMac is terribly slow. It takes 15 minutes to boot.
I did a test with dd, and the speed is 1MB/s. The system is unusable.
Any idea?
Thanks

It turns out that it is a hardware problem after all:
Sorry for the trouble.

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Has anyone published tests on them? I know Apple is saying they are up to 3.5 times faster for some uses, but have any geeky tests been done? Thanks.

Hi, I'm not finding much, but today's news here has a bit...
http://xlr8yourmac.com/
Mentions not the fastest setup here...
http://www.zdnet.com/details-emerge-on-apples-fusion-drive-technology-7000006477 /
PS. Strange that your post says OCT 26, but just showed up today!?

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I have a brand new Ideapad G710 with 1TB Serial ATA 2, 5400rpm with advertised speed of 3 Gb/s (= 384MB/s).
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Solved!
Go to Solution.

hi Daew,
Welcome to the Lenovo Forums.
The results that you got while running CrystalDiskMark is normal. The SATA 2 (3Gb/s) that you mentioned is actually the SATA interface support, not the actual read/write performance.
If you have a Seagate HDD (eg. ST10000LM024), check these specs
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AFAIK, if this is the specs that is design for this drive, there's no way to speed it up.
If you're planning to upgrade in the future though, you can get an SSD for faster read/write.
Regards
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Thunderbolt drive Read/Write speeds have significantly dropped

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ishjen wrote:
Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
Welcome to Apple's discussion groups.
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That does seem slow - on the other hand, what are you using to measure it?
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Xbench Stats: http://grab.by/7zau
Anything in System Profiler? http://grab.by/7zaR
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Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
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ishjen wrote:
Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
Welcome to Apple's discussion groups.
Apple's AirPort base stations aren't known for fast file serving, but for most purposed they're fast enough.
I can't comment specifically on your Aperture plan, but with some software it's important to avoid simultaneous access by more than one user.

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Drives keep evolving.
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I'm looking for the read/write speeds for my Mac's.

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I think the feature is called Voice Over, and I think it's now compatible with Reader:
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Trey992 wrote:
I'm really disappointed, considering I spent $1200 on a portable laptop, I expect it to be pretty much perfect, and it's a let down knowing I didn't get what a lot of other people paying the same price might be getting. Anything on this Apple?
Are you looking to get a response from Apple here? If so you're going to be left wanting. This is a user-to-user discussion forum, if you wish to communicate with Apple you'll need to get on the phone with AppleCare or bring it into the store.
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Required read write speeds

hey
i'm currently in the process of building a NAS and have been previously working with a firewire hard drive box..
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thanks for your time guys!
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~Will-i-am~

it can achieve anywhere between 22-45mb/s read/write speeds
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If all you deal with is DV.
x

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Related: http://www.anandtech.com/show/7337/corsair-force-ls-240gb-review
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Loss of read/write speeds fusion drive

hey guys!
little confused, when i first unboxed my iMac i was getting Write speed of 320.0 MB/s and a truly amazing Read speed of 715.0 MB/s a mate popped round this morning and i thought i would show off and show him the speeds, i ran the same benchmark and i got Write speed of 310.0 MB/s and a Read speed of 519.0 MB/s
i ran the test a few times and even rebooted the system...
where has the speed gone lol, i mean... im not complaining... its still stupidly fast, just wondering where it could of gone

Just a guess here but when you unboxed your iMac everything was on just the SSD. Now some of your data has also been put on the SSD and your speed test feels the effects of core services moving things back to the HDD. Just a guess.

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Hello. I've been having some problems via my Mac (Kernel panic at start up) and is thinking wether or not it is the hard drive.
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Ashley.

I haven't got the logs. I had to reinstall everything in order to get it to start up (Couldn't find ACPI?)
And I'm only asking because it seems like my laptop HD is running slow. Is it normally about 5mbps for a 5400rpm HDD?

1MB/s read/write speed in fusion drive

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