Airport 802.11n Disk - File Corruption!

I'm seeing occasional file corruption when using Apple Disk. After copying files to an Apple Disk using a Mac mini via Ethernet, the files are not the same.
myvideo.avi /Volumes/Adonais/Documentary/myvideo.avi differ: char 34439169, line 112648
Copying the file again usually results in a successful copy. Copying to a Samba share on a Linux server is 100% reliable, suggesting it's not a network issue.
I've tried two different USB enclosures with the same results. Both enclosures were problem free when directly connected to the Mac mini. The enclosure is connected to the base station with a Belkin hub.
Mac mini Mac OS X (10.4.9)

I've given up with AirDisk. The file corruption was too serious to ignore. I've plugged the HFS+ disks into the Linux server, mounted them (Linux hfsplus filesystem driver) and shared them using Netatalk. It's not quite as elegant but it's much more reliable.
MacBook Pro Mac OS X (10.4.9)

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Airport (802.11n) and WDS

Hi,
Does someone can tell me what "speed" will I get with two Airport 802.11N with WDS setup ?
I alreday know that a WDS with an Airport 802.11N and an Airport Express or Extreme won't get better than the slowless one : 802.11g.
Thanks
HDR

You'll get 54mbit between the two airport extremes...
Technically yes but the bandwidth available to any client is really only 27 Mbps since all data must make 2 hops and no other data can be transmitted during either hop. Other data can not be transmitted because both base stations are using the same channel.
So if the client requested 54 Mb, it would take one second to go from AEBS_1 to AEBS_2 and then another second to go from AEBS_2 to client. Therefore the total bandwidth is:
(54 Mb)/(2 sec) = 27 Mbps
Don't know where you got 104 Mbps but if the clients were able to use that speed to connect to AEBS_2, the data would take .519 seconds on the second hop. The overall bandwidth would then be:
(54 Mb)/(1.519 sec) = 35.5 Mbps
Regardless of how you slice it, WDS makes a drastic cut on your available bandwidth.

Can you use airport extreme 802.11n for files backup

Can you use airport extreme 802.11 for files back up and sharing

You can if you connect a hard drive that has been formatted correctly to the USB port on the AirPort Extreme.
Apple does not officially support Time Machine backups for this type of setup, but you could store regular files this way.

Airport Express 802.11n Personal File Sharing (548) Port Forward

I need to forward port 548 on an 802.11n Airport Express to a private address but the Airport Utility blocks this as if AirDisk were enabled. Problem is the AirDisk pane in Airport Utility is greyed out so I can't disable it.
Anyone else experience this? I don't want to map a different WAN port to the private 548. Suggestions?

The best solution I could come up with was to make a port forwarding entry on the Airport Express to map WAN port 550 to private port 548. The only downside to this is that to connect to the server you have to append the port number to the address to override the default AFP port, so your server address looks like server.domain.com:550.

Airport 802.11n issues

I have 4 macs and 3 of which cannot access the Airport extreme 802.11n.
The only one that can is the MacBook 10.5.4
I need to connect a g5 (intel) 10.5.2, PowerBook (PowerPC G4) 10.4.11 and MacBook Pro 10.5.4
Is this info helpful, or do you need to know anything about the airport card each comp has?
Can you point me towards some troubleshooting help?
Thanks so much!

"I need to connect a g5 (intel) 10.5.2" did not think Apple ever made this one has a B/G card not N
"PowerBook (PowerPC G4) 10.4.11" has a B/G card not N
"MacBook Pro 10.5.4" should be able to connect to N
Use Airport Utility and set your network for 2.4 GHZ N+B/G speed you will not get N speed at 5 GHZ your devices are mixed so the N peed will not be there.

AirPort 802.11n ... speed

I just upgraded to 802.11n, but it seems much slower than the old AirPort g. Is this just my problem or does "n" work differently?

I just used the AirPort Client Monitor to see what's up. Here is what I'm getting.
Strength: -40dBm
Noise: -90dBm
A signal with a strength of -40 dBm and noise of -90 dBm would equate to a Signal-to-Noise Ratio (SNR) of 50 dB -- an excellent value for WLANs.
SNR is the signal level (in dBm) minus the noise level (in dBm). In your example, a signal level of -40 dBm and a noise level of -90dBm yields a SNR of 50dB.
The SNR, as measured from the iBook, decreases as the range to the base station increases because of applicable free space loss. Also an increase in RF interference from microwave ovens and cordless phones, which increases the noise level, also decreases SNR.
SNR Guideline
o 40dB+ SNR = Excellent signal
o 25dB to 40dB SNR = Very good signal
o 15dB to 25dB SNR = Low signal
o 10dB to 15dB SNR = Very low signal
o 5dB to 10dB SNR = No signal
Transmit Rate: 52Mbps
54 Mbps would be the highest possible bandwidth for a 802.11g wireless network ... so getting 52 Mbps would be excellent.
To achieve 130 Mbps, the wireless network would have to operate at in either 802.11n only (2.4 GHz) or 802.11n only (5 GHz) with wide-channel disabled radio modes. To achieve 300+ Mbps, the network would need to be operating in the 802.11n only (5 GHz) with wide-channels enabled radio mode. In addition ALL wireless clients must be capable of either of these as well. Any "b" or "g" clients will impact the "n" network overall bandwidth performance.

Apple Airport 802-11n connection problems with Windows 7

I'm basically a MAC user, but my son is trying to get his Windows 7 Toshiba laptop to connect to my Apple 802-11n wifi. It will see the wifi, but when clicked on my network the connection fails before I get to input the password. Yet neighborhood 802-11n connections get to the password screen. The lap[top is a Toshibe satellite L755-S5107 running Windows 7.
I'm not very savvy on PCs, so I don't know where to look for versions of his software et al.
Anyone familiar with such problems?

Toshiba may be doing something different than other manufacturers, so your best bet might be a Toshiba support site.
Official Toshiba Support | Toshiba
Another source that may of some help is the Windows troubleshooting guide for WiFi connections:
Wired and wireless network connection problems in Windows ...
Not sure how much more help that we can provide on an Apple support site for Apple wireless routers.

Airport extreme 802.11n disk utility - error that disk needs repairing

Hi,
when I connect my LaCie 320GB external disk I always get the error, that the disk need reparation and cannot be used over the airport.
When I connect the disk to my power book and run the hard drive utility all is fine. No fixing needed for acces rights and for volume.
Anyone having the same problems.
Powerbook G4 Mac OS X (10.4.8)

What did you reformat the drive to? MAC or PC and what flavour? Just wondering what works best.
One thing I will point out. I'm new to Mac so maybe this is obvious but you can mount Mac formatted disks in TWO ways:
1. correctly via the Mac network
2. incorrectly via the Windows Workgroup
This had me confused for a while as file types weren't being recognised by the Mac.

Zip disk files corrupted

I recently mounted an Iomega Zip100 disk that was created in 2002 on a G4 under OS X something. Most files are OK, but several of the directories are corrupted and system thinks they're Unix executables and not directories. Icon in finder is a little terminal, and an ls -l command in Terminal does not show the initial "d". How can I change "-rwxr-xr-x@" to a directory so I can read the files inside?

Try changing the Finder preferences to show extensions. Log out and log in to restart Finder (or use Force Quit to relaunch Finder). See if those misbehaving folders have a .something extension. If so, remove the extension.
OR... If you do a right (control) click on the file in Finder, does the contextual menu show +Show Package Contents+ ? If so, select it to see if you can access those files inside.

Conflict with Neighbour using another Airport (802.11n)

Hello
I noted recently some slow down in my home wi-fi network and discovered that my neighbour installed a new airport extreme that might be confilicting with mine. I have tried to change channel (automatically set to 7) to 2, 3, 4, 9 and others. It partially solved the problem but if it works for a while, then the problem keeps coming back. I will go to his place tonight, please could you tell me what I should check ?
Also while changing my configuration, I keep having the same error message coming back (on my airport extreme), that is error code -6722 or sometimes -32 or -6. Apparently this is a comon issue to many of you. Could you help me also on that one? Thanks a lot. Pascal

vador300 wrote:
Radio Channel selection: Manual 36(5GHz), 11(2,4GHz)
I have now turned mine to channel 11 and it seems to work.
I would expect that having both units assigned to the same channel would maximize the interference, not minimize it. But if it's working, I won't argue.
However, while applying the changes, I got the error message -(6722). Also sometimes, error -(32)
A Web search showed a number of reports of error -6722, but no one seemed to have an explanation. Sorry.

Do my Airport Express just buy are with 802.11n?

I using imac 2.4 GHz model 2008 which understand that it build in with airport extream 802.11n standard, isn't it?
Also just buy Airport express but doubt that this AX is on which 802.11n or not?
Because it shown only 802.11 a/b/g.
And since I found software for airport 802.11n available for 1.99 US$, Do I need to install this software to be able to run 802.11n?
Thank in advance.

No, special software isn't needed. You have AirPort Utility already installed on your iMac and it is located under Applications/Utilities. Run AirPort Utility and go to Wireless and make sure you have an 802.11n mode selected (whether it is 802.11n only or 802.11n with b/g compatibility enabled).

Not able to see disk connected to AirPort Extreme 802.11n

I just installed my AirPort Extreme 802.11n Wireless Base station. Wireless internet works like a charm, however, I cannot see my external hard disk when it is connected to the base station (amber light blinking and when checking the problem, I am told that "Disk needs repair"). When connecting the hard disk directly to the PC, I have no problem seeing the data. Any tips or tricks out there... ?
AirPort Extreme 802.11n Windows XP

I finally got my 500 GB Western Digital MyBook USB drive to work by reformatting it to HFS+ format.
Of course, before I could do that, I had to copy all my files onto another hard drive. That job took a day to accomplish.
I work with Poser, and have a lot of content installed... We're talking thousands of files.
Once the drive was reformatted to HFS+ format, I copied everything back over. That took another day. Then I connected to the AEBS.
The USB drive was immediately recognized. It was incredibly easy to access the USB drive on my PCs. It required no effort on my part, except to supply the password.
In the end, I've decided this effort is a failure.
The drive is way too slow for my needs. Also, one of my vital Poser utilities (CorrectReference Pro) will not work properly with the USB drive on the AEBS.
I am currently in the process of copying all those files over to two external USB hard drives attached to my other PC.
Then I plan to unmount my 500 GB MyBook drive, and reformat it back to NTFS. I'll let the Notebook PC have it on a direct connection again.
I have a couple "junk" External Hard drives that are 160 GB. Maybe I'll use one of those as an Airport disk...
But I won't be using the Airport disk for anything important. It's too slow.

Airport Extreme 802.11n sharing a disk with a -1 on the mount point

First I have to reboot the device once a day because of the disk that disconnect for no reason like many other on the list ever since I upgraded to 7.2.1 but not sure that as to do with this problem.
Here's is the deal, I have an Airport Extreme 802.11n with a 500GB shared on the USB port. I want to use my iPhoto Library on the 500GB. It's about 11GB, I have tranfered the library over and iPhoto is asking to choose the library I want to use. When I try to point it to the 500GB everything is greyed out. When I use a terminal and do a df command to show the mount point on my computer, I get
/Volumes/500GB-1
Why and where the -1 is coming from?
How can I get /Volumes/500GB only?
One thing I have noticed about the -1 is when I loose the disk connection it prompt me to disconnect 500GB-1 but sometime even with a -2 and -3.
Thx!

can I hook up my printer, scanner and external harddrive through a usb hub?
Partially, a large number of USB printers will work with the AirPort Base Stations' USB port, but not all. I suggest that you checkout the following iFelix site to see if your printer is compatible. Similiarly, most external USB hard drives should work as well.
However, devices that rely on two-way communications, like copiers and scanners, won't work when connected to the USB port.

AirPort Extreme (802.11n) File Transfer Speeds Over Ethernet

I tested the transfer time for a 1.33GB file from one computer to another under four conditions. Both computers support gigabit Ethernet, and all cabling is Category 6.
Condition 1: Both computers were directly connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 128 seconds.
Condition 2: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a pre-gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 72 seconds.
Condition 3: Both computers were directly connected to an 8-port D-Link DGS-2208 gigabit switch, which in turn was connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 55 seconds.
Condition 4: Both computers were directly connected to a gigabit AirPort Extreme Base Station (802.11.n)
The transfer time was 28 seconds.
Tentative Conclusions: Using a gigabit switch as the parallel connecting device when the router is pre- or non-gigabit is helpful. Using a gigabit switch as the connecting device when the router is also gigabit is hurtful with respect to transfer time.
I would appreciate any comments.

I re-ran the tests several times, taking care to "pre-warm" the connections by rebooting the router (and the switch when applicable) and making one false start, stopping the first transfer and then starting the timed transfer.
The transfer times when no switch was involved were virtually the same as I reported earlier, with the gigabit router significantly outperforming the pre-gigabit AEBS (it was 5.73 times slower). Interestingly, the transfers via the gigabit switch were virtually as fast as a pure transfer using only the gigabit router.
And there was no difference in the gigabit switch-employed transfer times regardless of whether a pre-gigabit or gigabit router was used. Here is my revised conclusion:
Using a gigabit switch with Apple's pre-gigabit 802.11n router overcomes the slowness associated with a pre-gigabit router provided that pre-warming techniques are employed.

Help needed connecting Iomega Minimax Ext HDD to Airport Extreme 802.11n

Would appreciate if someone can help me with the following task. After researching and trying several things, I have not succeed in resolving the issue.
I want to connect a Iomega MiniMax Ext HDD (for Mac) to my (Airport Extreme 802.11n + Time Capsule) box using the USB port at the back of my Airport Extreme. Then I want to access the Ext HDD wirelessly as a drive on my Macbook (snow leopard OS). I was told this was possible at the Apple Store...but have failed so far.
Any suggestions so far

Hello smitra. Welcome to the Apple Discussions!
The following are the basic steps for sharing an external USB drive attached to either an 802.11n AirPort Extreme Base Station (AEBSn) or a Time Capsule (TC):
o Plug the hard disk into the USB port on the back of the base station.
o Open AirPort Utility, located in the Utilities folder in the Applications folder on a Mac, and in Start > All Programs > AirPort on a computer using Windows
o Select your base station, and then, choose Manual Setup from the Base Station menu.
o Click Disks in the toolbar, and then, click File Sharing.
o Choose “With a disk password,” or “With base station password” if you want to secure the shared disk with a password, or choose “With accounts” if you want to secure the disk using accounts. If you choose to use accounts, click Configure Accounts, click the Add "+" button, and then enter a name and password for each user that will access the disk. For simplicity, I would recommend using the "With a disk password" option.
o Choose “Not allowed,” “Read only,” or “Read and write” to assign guest access to the disk.
o Select the “Share disks over Ethernet WAN port” checkbox if you want to provide remote access to the disk over the WAN port.
You should now be able to find this drive within Finder under the SHARED category.

Airport 802.11n Disk - File Corruption!

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