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

I'm looking for read/write speeds for my Macs, but I can't find consistent data. Does anyone know the speeds or know where I can look? I have three computers:
iMac late 2013 Fusion/3TB i7
iMac late 2009 1TB i7
Macbook Air 256GB i5
Thanks,

I think the feature is called Voice Over, and I think it's now compatible with Reader:
http://support.apple.com/kb/HT3598?viewlocale=en_US&locale=en_US

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What is the Read/Write speed for a 250gb Serial ATA hard drive?

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.
Does anyone know what the Write speed is for the specified hard drive. I'm currently getting about 5 mbps and that feels a bit slow
I'm on a Macbook Pro mid 2009 model.
Thanks in advance
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?

What are the read write speeds of the new Mac Pro's storage options?

The subject line says it all.. I would hate to go for the 1TB option only to have it be slower than the 512GB.
Thanks
Dimitri Katsaros

Samsung starts mass producing PCIe SSDs with 1400MB/s read speeds By Matthew Humphries Jun. 17, 2013 11:27 am
When the new MacBook Air got the teardown treatment last week, there wasn’t much different from the previous model apart from the addition of a Haswell processor, bigger battery, dual microphones, and a new SSD.
In fact, it’s that SSD that was the most unexpected new component, as it saw Apple switch from a SATA to a PCIe-connected storage solution.
That faster storage solution isn’t going to be limited to MacBook Airs , though. The PCIe SSD was supplied to Apple by Samsung, and Samsung has today announced it is already mass producing the drives.
The new drive is known as the XP941 and Samsung will offer it in 128GB, 256GB, and 512GB configurations. It achieves read speeds of 1,400MB/s, which clocks it at 2.5x faster than a SATA SSD. It also only weighs 6 grams and measures 80 x 22mm. Samsung claims it only takes up a 7th of the space occupied by a typical 2.5-inch SSD.
With Samsung being the only company currently boasting mass production of such drives, supplies may be stretched depending on how many manufacturers decide to use them.
Apple is surely already taking a large chunk of the stock every month already, leaving everyone else to fight over the rest.
===========
It depends a lot on the pattern, and also what type of file, what any particular benchmark too. Intech SpeedTools gives you more flexability in read and write file tests - SSD writes are highly variable, it is the high IOPS and high reads that boost a system so much.
People that were using PCIe SSD 6G and multiple SSDs have found that Aperture, Lightroom, Photoshop scratch AND having the system on their SSD run smoothly, fast, even faster than those "olde" SATA3 6G controllers they were using to get 800-900MB/sec.
I just don't think you looked on Barefeats or Googled long enough to find some reviews, and there have been more - the large Anandtech review of the nMP is a good start.
http://macperformanceguide.com/MacPro2013.html
Lightroom Perspective:
http://tony-hart.com/blog/essays/2014/01/mac-pro-a-lightroom-perspective/
Aperture, Lightroom and Capture One
http://forums.macrumors.com/showthread.php?t=1542274
Unboxed and Tested
http://forums.macrumors.com/showthread.php?t=1692536
nMP review from a 3,1 owner
http://forums.macrumors.com/showthread.php?t=1695308
Anandtech's Big review
http://www.anandtech.com/show/7603/mac-pro-review-late-2013

Typical read/write speeds for Apple Raid card

I have 3 1TB Samsung F3 Spinpoint drives that I am using in Bays 2-4, coupled with Apple's Raid card. Before striping the drives in a raid configuration, I used Disk Utility to write zeroes to each of the disks individually, which took about 3 hours each (this works out to about 100 MB/s, which makes sense to me). However, the third drive, in Bay 2, took much longer than normal to zero (over 12 hours), so I suspected a defective drive. When I striped them using the Raid Utility program, I was able to create a volume and proceeded to test it using QuickBench. Extended Read tests in the 20-100 MB range were only about 30 MB/s. Is this normal? Shortly thereafter, my Raid Utility program encountered an error with the hard drive in Bay 4, which wasn't the same disk I had problems formatting. I took out that drive, removed the volume and raid, and set up Raid Stripe 0 with 2 disks. I am still encountering Extended Reads of about 30 MB/s, no matter if I have cache enabled or not. Any help would be appreciated. Thanks!

I suppose I could select a block size other than 32 kB when I set up the raid, but I wanted to save time to see if any posters have other suggestions.
I know that the windows version of the drive makers utilities are recommended for surface scanning and mapping.
In the case of weak sectors, this is about all you can do.
I may be wrong, but I think Apple has a clause in their manual so that people will buy hard drives from them instead of 3rd party manufacturers.
I am sure that is part of it.
There is also the onboard ROM of the hard drive.
Problem with Apple supplied cards of any kind, is that they have a history of ROM manipulation.
Whether it be crippling (as compared to 3rd party equivalent), or keys to limit performance or compatibility, it is always a question.
I know I am not the only one who has bought their own hard drives for a Mac Pro RAID setup.
I'm sure you are not, and was just "crossing t's and dotting i's" in asking....
BTW, I have 132 MB/s Read, 121 MB/s Write for 2MB-10MB blocks, avg 128 MB/s and 110 MB/s for 10MB-100MB blocks on a 2 drive RAID with WD drives in a 100MHz FSB system.

What are read/write speeds for Fusion drive?

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!?

Thunderbolt drive Read/Write speeds have significantly dropped

I got a new Western Digital Thunderbolt VelociRaptor drive. When I did speed tests on it using "BlackmagicDesign" Speed Test software initially (when empty) the drive was giving me read and write speeds of 350 MB/s. Now however I have 90% of the drive occupied with data and the read/write speeds have dropped significantly to 230 MB/s. Any ideas as to why and how I could improve this?
Thanks

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.

Read/Write speeds with Airport Extreme and USB Hard Drives

Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
My Setup
I have a 17 MBP (2010) and a 13 MBP (2011) - no SSD's
MBP generally connect via 802.11n 5Ghz with a very strong signal
Gigabit connection on a Windows Desktop
I have a variety of external drives (7200, 5400, Drobo) at varying capacity (320GB, 2TB, 5.6TB)
Goals
Backup: Time machine
Backup: File copies of pictures and home videos (greater than 1GB files)
Backup: Crashplan
File sharing: Aperture libraries--not sure if that is possible or practical. That is something that I need to research further...but on the off chance people have experience with it.
Thanks!

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.

How to change the permission of a folder of a website hosted on Microsoft Azure. I would like to know how to enable read write permission for this folder

How to change the permission of a folder of a website hosted on Microsoft Azure. I would like to know how to enable read write permission for this folder
Regards,
John

Hi,
Please try to setting Folder Permissions on Web Publish, and then deploy it with Web Deploy, as far as I know, if we do that, Web Deploy will use the SetAcl operation to change permissions. Please have a look at the article below.
#http://sedodream.com/2011/11/08/settingfolderpermissionsonwebpublish.aspx
Best Regards,
Jambor
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How do I lower the write speed for burning a DVD? It gives me no option!

How do I lower the write speed for burning a DVD? It gives me no option!

Export the dvd as an image from Encore, then use Imgburn to make the discs. I usually export a dvd folder from Encore and then use Imgburn to create the iso and do the burning
The Official ImgBurn Website
Be careful if you download it, it will try and install allsorts of other programs. This thread might be of some help.
Imgburn and Bloatware Add-ons

Toshiba SSD vs Samsung SSD and inconsistent read/write speeds

I've heard that some of the 2011 Airs are shipping with Toshiba SSDs where others have the Samsung SSDs. Apparently the Toshiba ones are considerably slower and are more likely to be in the 13" models where the Samsung SSDs are more likely to be in the 11" models. I was curious if anyone out there has an 11" model with the 256GB option, and if so, which SSD did you get in yours? See here: http://9to5mac.com/2011/07/25/2011-macbook-air-ssd-speeds-are-not-consistent/#mo re-85182
Thanks

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.
You can also return the machine and buy a new one, it's a 50/50 chance.
I have the Toshiba drive in my 13" MBA with the 128GB SSD. A co-worker has the same model machine with a Samsung drive.
As Apple doesn't promise a minimum SSD read/write speed I don't really see any justification for them to offer an exchange on a unit unless it's defective (which this would not be considered defective in their eyes). Thus my recommendation for the return. The other problem is there's no discernible markings on the outside of the box that indicate which drive is in the machine, plus Apple doesn't let you "try before you buy."
Even given the slower Toshiba speeds, I'd be really curious to see someone max out the capabilities of either drive.

How to create files with read/write privileges for everyone?

I have two iMacs 7,1 (one with Snow Leopard and the other with Mountain Lion) in a local area wireless network.
I have shared the "documents" folder in the Snow Leopard iMac in order to have files available to the other iMac. The folder has read/write privileges for everyone.
When I create a new file in the shared "Documents" folder (for example a new Open office document, or a Keynote presentation) this file is by default "read/write" for the Administrator but only "read" for all the other users, so when I try to open it from the other iMac, I am informed that the file is "read only".
I can obviously change the privileges of the file in the information window, but I have to do on a file per file basis and this takes too long.
Is it possible to change settings in order to create files which are always "read/write" for everyone?
And, secondly, since I have several existing files whose privileges I should manually change one by one, is it possible to make global changes of their privileges?
Thanks in advance
Best regards

couple of different changes - 1st, if you want to share folders, doing your whole documents folder is not the best way. Since both your computers can handle AidDrop, that's what I would recommend - http://osxdaily.com/2011/11/14/how-to-use-airdrop-in-mac-os-x/ - as it create an instant Ad-Hoc network between the two computers and then let's it done.
A second possibility that may not be what you're looking for, is to use google drive or some similay cloud sharing app to sync the documents back and forth. both of these solutions will transfer the files well, but the airdrop may be simplest

Is it possible to change the read/write permissions on a time machine back-up of iTunes? I need to restore it, but old version is locked....

Is it possible to change the read/write permissions on a time machine back-up of iTunes? I'm needing to restore it as my phone deleted half our playlists during sync & am not seeing a way to unlock the permissions. I have the current version unlocked, but can't seem to get the backed-up version. When I click on restore I get a pop-up that says iTunes can't be deleted as it is part of the OS. I'm not even trying to delete, just restore the old version. Any suggestions?

Hmmm, ok I'll give it a shot. I've always had the iTunes sync w/ my phone set up to only load selected playlists to the phone b/c there's a lot more in iTunes than I have room or desire for on my phone. A few months back I started having trouble w/ trying to sync everything & subsequently adding more to the phone than it could hold. The quickest thing at the time was to unclick the sync music option in iTunes so I could still backup the phone to the computer & not have a problem.
When I asked about it during one-to-one session shortly after, they advised me to delete the music off my phone & then re-sync it to the computer, run a backup of the phone & redownload the music to the phone. When I tried this it ended up deleting all my playlists (but not my husband's) from iTunes. Irritating, but I've been rebuilding the playlists since. I had also unclicked sync music again & an Apple person told me the most likely best fix was to delete & reload iTunes completely.
A few days ago I realized I hadn't backed up the phone to the computer in over a month so after deleting & reinstalling iTunes, & w/o changing anything (sync music was STILL unchecked) I ran a backup & my phone went from having 4 GB free space to being 2 GB over capacity due to iTunes trying to download the entire music library to the phone. I made a one-to-one appt again & it was suggested AGAIN that I delete all the music off my phone & then resync it to the computer & redownload the music. We did this (though a few random songs that had previously been purchased somehow remained on the phone), I got home, connected the phone & instead of the music that shows as 'on my device' disappearing from iTunes it just sat there, so, as the guy had told me I MIGHT have to do, I threw all those songs showing in iTunes as being on my phone, in the trash so that it was completely clear.
At this point I checked sync music, made sure the options were 'selected playlists only', checked the ones from my own list that I wanted (I usually have one playlist of comedians from my husband's folder that I also have on the phone, but didn't check it at this point). It uploaded all my stuff just fine, but for whatever reason when it saw that I wasn't uploading that comedy playlist any longer, it not only didn't upload it but proceeded to delete my husband's entire folder of playlists from iTunes. -_- I got on the phone w/ an Apple support person right away but he wasn't able to tell me anything .. basically said we'll have to rebuild everything. I asked about the possibility of using time machine, he said he's not qualified to answer that, so that's when I started looking around online & found, among others, the link I referenced a couple replies ago.
I hope this all makes sense. It's been a long-term issue so I'm trying to go from memory as I figured to begin w/ that I had just made a mistake somewhere, so didn't try to document anything. Now w/ it having happened a 2nd time, I'm not sure if it was 'user error' or something else.......

Are my read/write speeds up to snuff? MacPro Octo 2.26

What are typical and good read/write speeds I can expect on my MacPro Octo 2.26 10GB Ram.
According to iStat, on a simple copy, I get about 65-70 MB/s read from a WD 640 caviar black internal bay, and 65-70 MB/s write to a WD 640 caviar black internal bay. Are there any apple docs that explain what we can expect, how to enhance? You can skip RAID talk, this is just basic stock computer and best operating procedures I'm speaking of. Thanks!
The OS is on a WD 74 Raptor drive.

Drives keep evolving.
It depends on what you copy, and what matters, or, where if any place is there a bottleneck?
Newer 10K VR drives maybe, boot drive is important.
SSDs definitely boost system.
Isolating I/O between drives (system, scratch, media, etc) really helps so all the work and I/O is spread out.
Newer 1TB and above drives with 500GB platters and higher density, too.
Best differs from video editing, to mild editing of files, to very heavy work in CS4.
Also, keeping your drives to 50% free space, or what I do for some drives is short-stroke so I really only use one outer partition to work with and use the rest for junk and inactive archive/backup and storage.
iStat - never used it and definitely not for benchmarking drives.

G710 hard drive read/write speed

Hello,
I have a brand new Ideapad G710 with 1TB Serial ATA 2, 5400rpm with advertised speed of 3 Gb/s (= 384MB/s).
I am running Windows 7 ultimate x64 with SP1.
When I test hard drive read/write speed (I used CrystalDiskMark) I get results of about 100MB/s, which is 3-4 times slower than it should be.
I am not running any resource heavy applications (Resource monitor reports Disk I/O to be 0 most of the time in idle state). I have 3 partitions, each with 16-32GB paging file size and all are >90% empty. All partitions have been defragmented before testing.
Is this normal? Are there any lenovo drivers or utilities than I might be missing or that can slow/speed this?
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
From the above specs, the unit has a cache that has a read/write max speed of 145 MB/s but there are environmental factors and power requirements to get this speed (eg. read/write speed on AC power is differente from battery power).
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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Sequential read/write speeds

How can i measure sequential read/write speeds?
is there any API, library that can help me?

I suggest you leave it like that then. Benchmarkings are all synthetic ones. The real life performance is what we need. There are many benchmark enhancement techniques other SSD players in the market improvise on their product so that it's sell off like anything. At the end of the day, it all depends on what you're getting out of your SSD .
Related: http://www.anandtech.com/show/7337/corsair-force-ls-240gb-review
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I'm looking for the read/write speeds for my Mac's.

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