Slow read/write over Thunderbolt and SSD

Hey all,
I recently picked up a Seagate GoFlex Thunderbolt sled and a 256GB Toshiba SSD for it.
I am wanting to use it as my Lightroom 5 catalog and Smart Preview drive, and leave the main HD clean.
When transfering all the info over from my main HDD, (158GB) I checked on Activity Monitor to see the real time read/write to the drive, and it only topped out at 150MB/sec. What gives?
I tested with an external FW800 and got 50-60MB/sec
Then tested with esata drive and got 80MB/sec
Both of these are platter drives.
I was expecting WAAAYYY more from the Seagate TB and SSD combo.
Did I set something up wrong? Have I been reading data wrong?
2011 i7 MBP
16GB ram
Toshiba SSD
Seagate GOflex Thunderbolt Adapter
Thank you

Hey,
I have the Seagate GoFlex Thunderbolt. And C300 SSD connected to it. The speed at which I am getting the SSD write at 196.5 MB/s and to read 323.4 MB/s.
You can use something call blackmagic disk speed to monitor how fast your drive is actually reading and writing.
The speed limitation you see may be from the actual SSD or copying from HDD to SSD. This will test direct reading and writing on the SSD, and will give you a better/truer speed.
Hope that helps
Ed

Similar Messages

Formatted on XP - EXTREMELY SLOW read/write on the Mac !!!!

Man this iPod is wack!! Im using the iPod mini in Disk Mode to transfer bits (updaters since my XP machine is NEVER connected to the net) back and forth between my PowerBook and my XP Intel based machine. Obviously i set up and formatted the iPod Mini on the XP machine.
Observation, file read/write times are unacceptably SLOW on Mac and the PC. Did Apple deliberately make this thing unusable in this situation? This thing has a transfer speed as if it were connected to a USB 1.1 port but it is NOT, on any of my machines. I format my USB Flash Drive (SanDisk Cruzer Titanium) on the same XP machine, use the same ports and it's read/write times are at least 5 times faster than the Mini !!!
When i format and setup the iPod Mini on the Mac then install MacDrive on the PC astonishingly the read/write times significantly increase on BOTH Mac and the PC. As i suggested i think there is something drastically wrong with Apple's PC iPod setup, there is NO way my other devices formatted on the PC have such abysmal performance . Man i click on a folder in the Finder of the PC formatted iPod and it take about 3 seconds until the files inside are displayed...this is also the case on the PC.
Anyone else experienced this?
I was going to buy another iPod specifically for transferring data between my Mac's and my colleagues PC's, but there is no way i will with such severely degraded read/write performance.
Best

Apparently this is not a single isolated case.
Scott Aronian Posts :
"On Mac FAT32 Format Slower Than HFS "
My 60GB iPod came in Windows FAT32 format which I liked since I could use it in disk mode on both Mac & Windows. However it seemed slow to start playing video and when switching between video files.
I did some timing tests and on the Mac FAT32 was much slower than HFS.
FAT32
Start playing movie = 12s
Stop movie and restart at same location = between 12-30s
HFS
Start playing movie = 5s
Stop movie and restart at same location = between 6s
If you have a Mac and your new 5G iPod is formatted for Windows, you may want to use the iPod Updated to restore and make the drive HFS.
There is NO such performance problems with USB Flash drives when formatted to Fat32 on PC's i have tested many and they perform similar on BOTH platforms.
Something fishy goin on here

Read & Write all folders and files

How do I allow another account user read & write privileges to all my files and folders? I have set the other user as an administrator however each file and folder that i've copied into their documents folder still need to be changed individually (through the Get Info window) in order to save changes or add new files to them. This is very time consuming, so is there an easier way?

Not exactly what you are looking for but maybe some useful information:
http://www.computerworld.com.au/article/197922/useraccounts_file_sharing_leopard_whatnew?pp=1&fp=2&fpid=2

A way to solve hard drive with slow read write speed

Just to share.
Currently I am trying to upgrade my Mac Pro 2008, and replaced the 2TB startup disk with a 120GB OWC SSD. After the OS installation, I started to move my photo library to a bigger 2 TB hard drive in Bay 2.
After completion, I started to import the photos to Aperture 3, but it crashed and failed to complete. I had a feeling that something wrong with my hard drive that holding the picture files, therefore, I tried to copy the disk to an external Firewire Hard Disk, the copy was very slow and showing an effective copy speed of 2 MB/s.
Disk utility, repair permission did not help and proved it was ok.
I did a Google search, and a Mac user suggested to use an Apple software called "TechTool Deluxe", therefore, I might as well have a try.
After a few tests, it did show up an error and asked me whether I would like to repair it, so I clicked Ok.
It took a second to repair and now the copy speed showing 50 MB/s.

Sounds like trouble with non system drive; with where the preference for where Aperture library is perhaps?
You have a couple backups of your drives in case you want to just update changes and reformat.
Is the old system drive and OS still around? might want to pull that. Eliminate confusion, cross-link of files or paths.
With SSD you want to clone and have a system image for restore - same as anytime, but even more so.
I've read but never understood the problems people have had with installing or cloning Mac OS to an SSD, but seems "real" nonetheless. And some problems with setting up Aperture was mentioned.

To have great read/write performance, do you have to save all programs onto the SSD or can you save programs onto the HDD?

if I want to use the fast read/write speeds of my SSD, do I have to save the programs (Final Cut Pro X, Adobe After Effects, Microsoft Powerpoint, Steam, Counter-Strike, etc) onto the SSD? Or can I save all programs onto a 2nd drive which would be a HDD and still have fast speeds WITHOUT storing those programs onto the SSD? My 2012 mid Macbook Pro has a SSD as its main bootup drive and will be getting a 2tb HDD to replace the optical drive.
Any advice or comments is greatly appreciated,
Thank you!

Sorry for my late reply.
Techinspace I'm with the latest Yosemite 10.10.2 and everything always up to date.
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Verifyed and checked the disks permissions and found one problem there:
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Airdisk - SLOW read speed, but FAST write speed with Leopard 10.5.1?

I've been complaining for a while about my random problems with reading files from airdisk. My solution has always been to relaunch finder and re-mount the airdisk when it slows down.
I just noticed the speed cut down to and when looking at the activity monitor, it's fluctuating up and down and never seems to go past 1.5 to 2 MB/s.
HOWEVER, what I did just notice is that my write speed is consistently 3-4 MB/s with no fluctuation at all. Interference is not an issue, as I'm on N-only mode and in 5GHZ.
Is there anything I can do aside from waiting until 10.5.2? This does this issue in every AEBSn firmware. Thanks.

I experience the same problem (slow read: 2,8 MB/s, fast write: 6,3 MB/s) with my airdisk over a LAN-connection with 10.5.2. I atteched the USB-drive directly to my iMac and then it's the other way around: fast write, slow read (although considerably higher and normal throughtputs so drive is OK).
Anyone having some suggestions? The airdisk is formatted as HFS+ (GUID) with journalling on, Airport firmware 7.3.1 and the most recent updates installed.
Message was edited by: jnmen

Hard drive read write speeds are too slow

I was having an issue with 17inch macbook pro. was getting 4.0mb/s read write speed tops. and smart status failure.
So i replaced the drive. The new drive is a 7200 RPM 500GB WD drive. I'm getting 12.0mb/s on top speed. Computer feels a little quicker but still slow overall.
I ran this test on a fresh install of snow leopard.
Is it just me or do those read/write speeds on the new drive still seem slow?
2007 17inch macbook pro with 2gigs of ram.

That does seem slow - on the other hand, what are you using to measure it?
My 1Tb 2.5" SATA drive performance shows as follows: http://grab.by/7zau
Xbench Stats: http://grab.by/7zau
Anything in System Profiler? http://grab.by/7zaR
Link Speed at 3 Gb?

How to remote desktop user can read, write ,modify and traverse folder but not execute?

Now I ceate a user accout whis is user type and put him into remote desktop group.
he can login this server by remote desktop.
My server is windows 2003 but not in nt domain and it is a workgroup computer.
I want to limit him access right on one folder in which have many folders and .exe file.
I only want he can read , write,modify file and traverse folder but not execute any .exe file.
How can I implement this through NTFS.
Please give me some advice.

Hi,
I think you could using advanced option to configure the file or folder permission:
http://technet.microsoft.com/en-us/library/bb727008.aspx
Regards.
Vivian Wang

Macbook pro 2011 HD read/write speed

My 2 and half year old macbook pro seemed little slow so i did read/write speed test and it shows about 45MB/sec read/write speed. It is normal for a old 5400rpm hard disk. I have mountain lion.

Yes, that's probably about normal for an older, slow drive.

How do is get back to Read & Write permissions on HDs ?

Hi gang,
I was trying to set up one central folder for 4 iTune users (accounts) in our household.
One of the blogs said put in "Shared" folder and set permissions to "Read & Write". I tried but on "Everybody" is does not offer the "R&W" option, just "Read". They also said to be sure you clicked "Apply to Enclosed Items" in the drop down. Although I could not set "Everyone" to "R&W", I clicked on "Apply to Enclosed Items" and the hard drives clicked for at least 15 minutes.
Afterward I got a pop up that said...   System Extension "/System/Library/Extension/ACard6280ATA.kext" was installed improperly and can be used. Try reinstalling. and an OK button to click. I clicked OK and at least 100 more popup appeared, one after the other as I clicked OK.   They all had the same basic message except the info after /System/Library/Extension/, it kept changing slightly on each new popup.
The big problem is I now have three of my four internal hard drives locked to my access and all they say custom on the permissions Privilege window.   Only my main HD is working, thank God.
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Thanks for all the reply's, I really appreciate your time. I have Apple Care so I worked with Apple tech last night and today, but they had to pass problem on to their engineers. They did a great job trying to help and spent 2 hours helping me input in code through the Terminal screen. It helped a little, but we still can access drive 2, 3 and 4 due to the global permissions that were changed.   All in all, it looks like we have to reinstall the OS on a washed HD.
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Gary

..Primavera\Project Management\PM.ini cannot be set to read-write status

I have installed Primavera P6.1 in a laptop under Administrator Login.
After that, when I log in to the laptop with my user Id, primavera fails to start and gives the following message:
C:\Program Files\Primavera\Project Management\PM.ini cannot be set to read-write status.
Kindly let me know how to fix this problem.
Regards

Please tell your IT Admin to fix as following:
The following is a summary of the minimum system requirements Primavera 6.2.X requires for users to be able to access and run components of the
software :
Window Folders:
 C:\Windows\System32\
dbexpsda30.dll
dbexpint.dll
dbexpoda30.dll
DbExpPrC.dll
dbexpsda.dll
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C:\Program Files\Common Files\Borland Shared\DBExpress\DBXDrivers.ini
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Read&Execute\Read permission to access files needed to run applications
 C:\Program Files\Primavera\Project Management\pm.ini
C:\Program Files\Primavera\Methodology Management\mm.ini
Read&Execute/Read/Write permission to access the ini file - required to log into the applications
 C:\Program Files\Common Files\Primavera Common
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Read&Execute/Read/Write to create and write output files
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READ
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workstation.
Jawad
Novo Rail, Sydney
P6 Project Controls Co-ordinator and Administrator

Cannot launch vivado simulator 2015.1: behav/compile.bat' script "Please check that the file has the correct 'read/write/execute' permissions"

Hi,
I'm trying to run a verilog simulation using the vivado simulator 2015.1 on Windows 7.
I get the following error when I attempt to launch simulation:
ERROR: [USF-XSim-62] 'compile' step failed with error(s) while executing 'D:/projects/axi/axi_test_system/axi_test_system.sim/sim_1/behav/compile.bat' script. Please check that the file has the correct 'read/write/execute' permissions and the Tcl console output for any other possible errors or warnings.
The tcl console repeats the same message, "Please check that the file has the correct 'read/write/execute' permissions"
I cannot find any problem with the permissions. I believe that windows will always execute a .bat file.   Within the same project, I can run elaboration, synthesis and implementation without problems.
Any idea why the simulation compile script won't run?
Thanks,
Ed

Hi,
Thanks very much for your detailed reply. These were the right questions based upon what I told you.
However, I took the code home last night and ran it on my webpack 2014.2 release.   It still failed, but I got completely different error messages.   These messages correctly pointed me to an undeclared signal in my testbench. Once fixed, the compile worked and the simulator launched.
This morning, I fixed the signal name in my 2015.1 setup, and it also compiled and launched correctly.
So, the problem wasn't actually related to file permissions. It seems like the 2015.1 error message may be broken compared to 2014.2.
I was running the Vivado GUI, clicking on "Simulate > Run Behavioral Simulation"
Thanks again for your help.
Regards,
Ed

2 monitors on MacBook Pro (Retina) using Thunderbolt and HDMI ports?

I would like to buy a MacBook Pro with a Retina display. I want to attach 2 external monitors and Ethernet. I need to use one Thunderbolt port to attach to my (wired) ethernet.
Can I attach 2 monitors to a MacBook Pro (Retina) using
1) a mini display port to DVI adapter
2) a HDMI to DVI adapter?

Yes, it is possible to run 3 monitors at once on the Retina MacBook Pro (2 connected over Thunderbolt and one over HDMI).
Displays used in picture below:
Retina on laptop @ “best for Retina”
iMac used as a display @ 2560 x 1440 via Thunderbolt
iMac used as a display @ 2560 x 1440 via Thunderbolt/DisplayPort
LG monitor @ 1920 x 1200 via HDMI
Hope this answers your question.
http://apple.stackexchange.com/questions/53759/how-many-external-displays-can-i- power-with-the-15-retina-macbook-pro

Problema di polimorfismo con Read/Write delle Shared variable

Salve,
Cercando di modificare l'esempio di progetto "Shared Variable Client/Server" in un progetto dove sono i diversi client a mandare dati al Server ( ovvero l'esatto contrario di quello che fa )
mi sono inbattuto nel problema illustrato nelle due figure che seguono.
Ovvero, sostituendo "Writable PSP Variable" ad "Readable" nella scheda "Connect"(FIGURA 1) mi da un errore nella scheda "Read/Write" (FIGURA 2), ovviamente anche qui ho sostituito a "Read Variable" un "Write Variable".
Mentre utilizzando il Data Socket funziona, ma non mi sono chiari i vantaggi e gli svantaggi nell'utilizzare quest'approccio.
Qual'è la strada migliore tra Shared Variable e Data Socket per creare un sistema Client/Server così costituito, ovvero con un cospicuo numero di client da servire ( destinato a crescere )che mandano simultaneamente un discreto quantitativo di dati ( circa quelli di una seriale a 115200bps ) ad un server
FIGURA 1
IMMAGINE 2

Translation
Hi,
Trying
to modify the sample project "Shared Variable Client / Server" in a
project where different clients to send data to the server (ie the
exact opposite of what it does)
I untapped in the problem illustrated in the two figures that follow.
That
is, replacing "Writable PSP Variable" to "readable" in "Connect"
(Figure 1) gives me an error in "Read / Write" (FIGURE 2), and of
course here I replaced "Read Variable" a "Write Variable.
While using the Data Socket works, but I have clear advantages and disadvantages of using this approach.
What
is the best route between Shared Variable and Data Socket to create a
client / server system so constituted, or with a large number of
customers to serve (to grow) that simultaneously sends a fair amount of
data (approximately those of a serial to 115200bps) to a server
The images points to a gmail location. It is not properly attached.

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.

Slow read/write over Thunderbolt and SSD

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