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1718 Views 21 Replies Latest reply: Aug 21, 2007 4:24 AM by John Calhoun1
Currently Being ModeratedAug 20, 2007 2:09 PM (in response to John Calhoun1)2.36 Mbps ??? wow somethings wrong there, that's less then 1 MBps. I'm getting a average of 16 MBps (or 136 Mbps)
For those who don't know 8 Mbps = 1 MBps (bit's vs. bytes)
What type of enclosure are you using? I have heard of some people having problems with Firewire / USB 2.0 combo enclosures and problems with hubs. From what I can gather not all enclosures work well with the AEBS. For example mine has great speed but never spins down like it should, while I have read reports that other such as the Maxtor one touch drives do. I had been looking for some documentation on what enclosures or drives are officially supported but have yet to find any.
here is a good test on performance with the 100Mbit AEBS
They were getting around 10 MBps when wired. I have yet to find any sites that have documented the new gigabit model.
oh and the drive is 300 GB and is using the HFS+ file system (no OS 9 drivers).
Message was edited by: Jayster68iMac, Mac OS X (10.4.6)
Currently Being ModeratedAug 20, 2007 2:13 PM (in response to Jayster68)I'm using a Western Digital (?) MyBook, 500GB, partitioned into 3 - 2 HFS and a FAT32. The AirDisks broadcasts the tw oHFS partitions consistently and occasionally will broadcast the FAT32 one. Can't figure that one out - it's at the bottom of my to do list.
Anyways - yep, my numbers are in megabits...considering my situation, I wish it was megabytes.
Check my math for the 1.16 Mbps test:
filesize = 10,043,970 bytes
transfer time = 69 seconds
My Kentucky math puts it at 1,164,518 bps or 1.16 Mbps.
Maybe the partitions is causing futher drag...I'll try a different drive when I get home.
jcMBP 2.16 CD, 2GB | 17" iMac 2.0 GHz G5 PPC, 1.5GB | MacBook 2.0 GHz C2D, 1GB, Mac OS X (10.4.9), 30GB 5G, 4GB 1G Nano, & 20GB 4G iPods
Currently Being ModeratedAug 20, 2007 2:49 PM (in response to John Calhoun1)partitions are likely your problems, I found this handy tidbit of info.
You can connect USB-based storage devices to an AirPort Extreme (802.11n). Learn which formats and protocols are supported.
The AirPort Extreme (802.11n) supports USB storage devices that have a block size of 512 bytes, and are formatted as Mac OS Extended (HFS-plus), FAT16, or FAT32. Not all USB storage devices use a block size of 512 bytes.
The AirPort Extreme (802.11n) shares storage devices based on the format used to initialize the storage device. For example, if HFS-plus formatting was used, AFP and SMB/CIFS protocols are used to share the device on the network. If FAT16 or FAT32 was used, SMB/CIFS protocols are used.
The AirPort Extreme (802.11n) works with disks that have a single partition and are not software RAID volumes (no more than one volume per physical disk). If the disk is a self-contained RAID that presents itself to a computer as a single volume requiring no software support, then it is supported.
I also found other posts on the web about other people having problems with WD My Book drives.
Message was edited by: Jayster68iMac, Mac OS X (10.4.10)
Currently Being ModeratedAug 20, 2007 6:01 PM (in response to Jayster68)OK - and there you have it...good nugget Jayster, thanks.
I've been trying to hook my other external drive that has only one partition on it and of course - it's having some issues - so I'm working through that now.
Jeez! If it's not one thing, it's another.
Message was edited by: John Calhoun1MBP 2.16 CD, 2GB | 17" iMac 2.0 GHz G5 PPC, 1.5GB | MacBook 2.0 GHz C2D, 1GB, Mac OS X (10.4.10), 30GB 5G, 4GB 1G Nano, & 20GB 4G iPods
Currently Being ModeratedAug 20, 2007 11:00 PM (in response to Jayster68)I stand corrected. Thank you. I was looking for detailed benchmarks for USB 2.0, but couldn't find any in the couple of minutes of Google searching that I spent. I assumed that USB 2.0 was merely a sped-up 1.1 with otherwise no differences in frame sizes.
I'm surprised that USB consumes a significant amount of CPU. Isn't the communication mostly handled by the controller chip?
Currently Being ModeratedAug 20, 2007 11:09 PM (in response to Jayster68)Well now, isn't that interesting: a single partition. For about a week now I've been able to mount both partitions of my external USB disk--HFS and FAT32--in OSX, while Windows running in Parallels regularly mounts the FAT32 drive. I'm not sure if I'm just lucky, but so far it works. I definitely had more troubles with another USB/Firewire drive that would not be recognized via USB when connected to the APE. But this drive works fine. Thanks for the tip, Jayster68.MBP, MB, PMac G5, a few Linuxes, Mac OS X (10.4.10)
Currently Being ModeratedAug 21, 2007 4:24 AM (in response to Jayster68)Jayster - yep, single partition drive is a lot faster. Using an older Seagate 160GB partitioned as HFS and I got transfer speeds @ 50 Mbps versus the ~2 Mbps.
So that should help in the networking of the AirPort disk. Now I just need to move the data off my 500GB and reformat it as one partition - not three.MBP 2.16 CD, 2GB | 17" iMac 2.0 GHz G5 PPC, 1.5GB | MacBook 2.0 GHz C2D, 1GB, Mac OS X (10.4.9), AEBSge | Too Many iPods to list