Maximum Number of USB Devices...

What is the maximum number of USB devices able to be connected to the new AirPort Extreme via a powered USB hub? In other discussions it said "officially" three devices. What is meant by "officially", and could I add more? Also, if these devices are USB external hard drives, can I access them from any computer connected to my network via either WiFi or Ethernet? If so would they apear in the Finder sidebar like normal and what would transfer speeds be like? (I own a MacBook Pro w/ 802.11a/b/g/n)
...One more thing, would I be able to set up automatic backups to one of these hard drives using Time Machine even though they're connected to an AirPort Extreme not a Time Capsule?

What is the maximum number of USB devices able to be connected to the new AirPort Extreme via a powered USB hub?
In theory, just a bit over 125.
Also, if these devices are USB external hard drives, can I access them from any computer connected to my network via either WiFi or Ethernet?
Yes
One more thing, would I be able to set up automatic backups to one of these hard drives using Time Machine even though they're connected to an AirPort Extreme not a Time Capsule?
Yes, if you are asking about the "new" AirPort Exteme. Otherwise, no.

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CallManager 7.02 Maximum Number of Registered Devices

We are currently running CallManager version 7.02 with the following configurations:
One Publisher and two Subscribers
CM Groups - 2
Sub1-CMG (used by 9000 devices)
    Sub1
    Sub2
    Pub
Sub2-CMG (used by 4475 devices)
    Sub2
    Sub1
    Pub
Maximum Number of Registered Devices - 10000
1) We just added some more devices that changed to number of devices to:
Sub1-CMG (used by 10050 devices)
Sub2-CMG (used by 4475 devices)
So, some of the new devices did not get registered with CallManager.
2) We changed the Maximum Number of Registered Devices to 12000
When we checked the new devices, there were still some that were not registered.
3) If we move the new devices to Sub2-CMG they register with CallManager.
Any thoughts here?

Since you are on CUCM 7, this means your cluster is running on MCS servers, from memory I think the top level MCS server in CUCM appliance mode supported upto 7500 phones per server. So you may be running into a hardware limit. Although you can configure I guess upto 15000 phones in the CUCM service parameter but still the MCS appliance mode had the 7500 phone/server limit with a max of 30,000 phones per cluster.
So either you have a MCS 7845 I2 or H2 the limit is 7500 per server (I am guessing you have top model of the MCS from number of phones you have otherwise limit will be further lower):
http://www.cisco.com/c/en/us/products/collateral/unified-communications/7800-series-media-convergence-servers/product_data_sheet0900aecd80572724.html
-Terry
Please rate all helpful posts and mark the thread as answered if you have no other queries

Maximum number of FW devices under 10.4.11

What is the maximum number of FW devices supported on a 2005 Late Model G5 under OS-X 10.4.11?
Thank you!

Have a look at > http://support.apple.com/kb/TA26476
{quote:}Question 5: How many FireWire devices can be connected at any one time?
Answer: Fire Wire can work with up to 63 devices on a bus. The number of bus-powered devices you can connect depends on the amount of power available from the computer, and the amount of power required by each device.{quote}
For more info:
see > http://support.apple.com/kb/HT2952
and > http://en.wikipedia.org/wiki/FireWire
Dennis

Maximum number of concurrent devices that could be used with embedde oracle

Hi,
How to know what will be the maximum number of concurrent devices that could be used with embedded oracle?
Any help will be needful for me
Thanks and Regards

user598986 wrote:
How to know what will be the maximum number of concurrent devices that could be used with embedded oracle?Please define 'embedded Oracle'.
I assume you are talking about an Oracle-supplied database engine. Currently Oracle has several database engines: Oracle Database (Personal/Enterprise/Standard/Express); Oracle Berkeley Database; Oracle Times Ten Database; (iirc) InnoDB Transactional engine; and down the road possibly MySQL.
Many people mean Berkeley when asking this kind of question, but sice you ask it in an Oracle Database forum as compared to a Berkeley engine forum, I am not quite sure.
If you indeed mean 'Oracle Database', then it is a lecense question that needs to be discussed by you license people and Oracle sales.

Number of USB devices that can be connected

Hi,
On my MacBook Pro (just before the unibody and all USB ports on the same side), I have connected:
1- on the left USB port a 1 TB external HD
2- on the right USB a USB hub with 4 ports:
2-1- a 320 GB HD used for TimeMachine
2-2- a DVD drive
2-3- a printer
2-4- a mighty mouse
Sometimes the Mac doesn't detect the RIGHT side group, I have to disconnect and reconnect the hub up to three times to get my devices recognized by OS X: is this normal? is there a maximum of devices a MacBook Pro can handle?
Thanks
Replaced left by right of course, thanks Limnos

HI,
Try Resetting the PRAM
If that doesn't help, try Resetting the SMC
If that doesn't help either, run the Apple Hardware Test just in case.
Carolyn

Is there a Maximum amount of USB and Firewire Ports that can be added?

Can someone tell me if there is a maximum number of USB or Firewire ports
that can be added to an iMac by using hubs? I sometimes find myself running
short and wonder how this can be corrected. Also, the new iMac has
one Firewire--is there such a thing as a Firewire hub? Thanks for any info.

I think the exact numbers are:
USB. Up to 127 devices, including the hub devices, may be connected to a single host controller. iMac G4's have two controllers between the three ports (the port next to the modem has it's own controller shared with the modem(which also counts as a device)).
Firewire. 63 devices daisy-chained or though hubs one of which is the computer.
Most Firewire devices have two or more ports so you can daisy-chain the connections without a hub.
regards
mrtotes

Maximum number of airport expresses on a network

Hi,
I'm using a time capsule and have three airport expresses connected to extend my wifi network. When I connect to the third airport express, all my devices cannot connect to the wifi network. The problem is resolved when I unplug the airport express and connect to the time capsule directly.
I was wondering if there is a maximum number of airport expresses that can be deployed on a network to extend the wifi connection.
Thanks

Apple does not provide a maximum number of extending devices for a network in their documenation, but the practical limit would probably be in 4-5 range. I've used 4 extending devices in the past with good results.
I"m assuming here that you are using the "extend a wireless network" setting on the AirPort Express, correct?
This setup works like the hub and spokes of a wheel. The main router is the "hub" and each of the AirPort Express devices reside at the end of a "spoke". The devices at the ends of the spokes communicate directly to the hub, not to another device at the end of a spoke.
So, in an ideal setup, your main router would occupy a central location in the home and the AirPort Express devices would be located approximately equal distance from the main router.
Can you provide a few more details on your setup?

[SOLVED] Unable to determine major/minor number of root device - USB

I installed Arch on a USB harddrive of mine from within VirtualBox with the intention of running the installation (via the drive) on a laptop in my house. I passed through the drive through by creating a special vmdk (here - it's for "expert users only". ) and installed Arch on it by booting off the Arch 2011.08.19 iso and following the instructions. I do recall the installer complaining because /sbin/mkinitcpio was missing, so I copied over the one from the host (which is also an up-to-date Arch system). After that, everything worked and I was able to boot the drive within virtualbox.
Then I went and plugged it in to another laptop in the house and, surprisingly (for me at least), it got past GRUB. My joy was short-lived, because it failed just a bit later:
:: Running Hook [udev]
:: Triggering uevents...done.
ERROR: Unable to determine major/minor number of root device 'Waiting 10 seconds
for device /dev/disk/by-uuid/[the uuid] ...
/dev/disk/by-uuid/(the uuid)'.
You are being dropped to a recovery shell
Type 'exit' to try and continue booting
sh: can't access tty: job control turned off
[ramfs /]#
So I googled around for a while and plugged it back in to my computer, booted it up in virtualbox, and added "usb" to the HOOKS array right after udev in /etc/mkinitcpio.conf. Then I rebuilt the initramfs:
# mkinitcpio -p linux
So I plugged it back into the laptop, booted it, and got the same error.
Later, in an attempt to isolate the problem, I removed "sata" from HOOKS, ran the same mkinitcpio command again, and rebooted the VM. I got what looked like the same error as the one above. yay. So I guess the usb hook isn't being loaded or something like that. (I've since added the "sata" hook back and rebuilt the initramfs so I can mess around in the VM )
I've tried removing autodetect from HOOKS (saw that in some threads) and trying different USB ports on the laptop, but nothing seems to be working. I also checked to see if virtualbox was providing a bogus uuid or something, but the one it's specifying seems to be correct - I looked in my computer's /dev/disk/by-uuid and it matched.
Info on the drive (first partition is /boot, second is swap (derp!), third is /, and fourth is /home):
# sudo fdisk -l /dev/sdg
Disk /dev/sdg: 500.1 GB, 500107861504 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773167 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00016b3d
Device Boot Start End Blocks Id System
/dev/sdg1 * 63 208844 104391 83 Linux
/dev/sdg2 208845 4417874 2104515 82 Linux swap / Solaris
/dev/sdg3 4417875 209230559 102406342+ 83 Linux
/dev/sdg4 209230560 976768064 383768752+ 83 Linux
Screengrab of my VirtualBox storage setup (just for giggles):
My /etc/mkinitcpio.conf:
# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run. Advanced users may wish to specify all system modules
# in this array. For instance:
# MODULES="piix ide_disk reiserfs"
MODULES=""
# BINARIES
# This setting includes any additional binaries a given user may
# wish into the CPIO image. This is run first, so it may be used to
# override the actual binaries used in a given hook.
# (Existing files are NOT overwritten if already added)
# BINARIES are dependency parsed, so you may safely ignore libraries
BINARIES=""
# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in any way. This is useful for config files.
# Some users may wish to include modprobe.conf for custom module options
# like so:
# FILES="/etc/modprobe.d/modprobe.conf"
FILES=""
# HOOKS
# This is the most important setting in this file. The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added. Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
## This setup specifies all modules in the MODULES setting above.
## No raid, lvm2, or encrypted root is needed.
# HOOKS="base"
## This setup will autodetect all modules for your system and should
## work as a sane default
# HOOKS="base udev autodetect pata scsi sata filesystems"
## This is identical to the above, except the old ide subsystem is
## used for IDE devices instead of the new pata subsystem.
# HOOKS="base udev autodetect ide scsi sata filesystems"
## This setup will generate a 'full' image which supports most systems.
## No autodetection is done.
# HOOKS="base udev pata scsi sata usb filesystems"
## This setup assembles a pata mdadm array with an encrypted root FS.
## Note: See 'mkinitcpio -H mdadm' for more information on raid devices.
# HOOKS="base udev pata mdadm encrypt filesystems"
## This setup loads an lvm2 volume group on a usb device.
# HOOKS="base udev usb lvm2 filesystems"
# Tried this line instead -- didn't work either
#HOOKS="base udev usb autodetect pata scsi sata filesystems usbinput"
HOOKS="base udev usb sata filesystems"
# COMPRESSION
# Use this to compress the initramfs image. With kernels earlier than
# 2.6.30, only gzip is supported, which is also the default. Newer kernels
# support gzip, bzip2 and lzma. Kernels 2.6.38 and later support xz
# compression.
#COMPRESSION="gzip"
#COMPRESSION="bzip2"
#COMPRESSION="lzma"
#COMPRESSION="xz"
#COMPRESSION="lzop"
# COMPRESSION_OPTIONS
# Additional options for the compressor
#COMPRESSION_OPTIONS=""
My GRUB menu.lst:
# Config file for GRUB - The GNU GRand Unified Bootloader
# /boot/grub/menu.lst
# DEVICE NAME CONVERSIONS
# Linux Grub
# /dev/fd0 (fd0)
# /dev/sda (hd0)
# /dev/sdb2 (hd1,1)
# /dev/sda3 (hd0,2)
# FRAMEBUFFER RESOLUTION SETTINGS
# +-------------------------------------------------+
# | 640x480 800x600 1024x768 1280x1024
# ----+--------------------------------------------
# 256 | 0x301=769 0x303=771 0x305=773 0x307=775
# 32K | 0x310=784 0x313=787 0x316=790 0x319=793
# 64K | 0x311=785 0x314=788 0x317=791 0x31A=794
# 16M | 0x312=786 0x315=789 0x318=792 0x31B=795
# +-------------------------------------------------+
# for more details and different resolutions see
# https://wiki.archlinux.org/index.php/GRUB#Framebuffer_resolution
# general configuration:
timeout 5
default 0
color light-blue/black light-cyan/blue
# boot sections follow
# each is implicitly numbered from 0 in the order of appearance below
# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.
# (0) Arch Linux
title Arch Linux
root (hd0,0)
kernel /vmlinuz-linux root=/dev/disk/by-uuid/b4a677d0-cb0d-4acd-bb09-2dc2f4b9501f ro
initrd /initramfs-linux.img
# (1) Arch Linux
title Arch Linux Fallback
root (hd0,0)
kernel /vmlinuz-linux root=/dev/disk/by-uuid/b4a677d0-cb0d-4acd-bb09-2dc2f4b9501f ro
initrd /initramfs-linux-fallback.img
# (2) Windows
#title Windows
#rootnoverify (hd0,0)
#makeactive
#chainloader +1
Last edited by UncleNinja (2011-12-02 15:33:21)

UncleNinja wrote:
skunktrader wrote:https://bugs.archlinux.org/task/27385
Perfect! Thank you!
Would it be safe to copy over the version from HEAD into my mkinitcpio?
EDIT: nevermind, derp derp the package is updated
EDIT again: Actually, it's not.
I copied over the init_functions in HEAD into /lib/initcpio/init_functions and rebuilt the initramfs. It worked!
Thanks guys!
Last edited by UncleNinja (2011-12-02 15:35:20)

I bought a used iPod touch and when I try to set up my iCloud account, it says that the maximum number of free accounts have been activated on this device. Is there a way around this?

I bought a used iPod touch and when I try to set up my iCloud account, it says that the maximum number of free accounts have been activated on this device. Is there a way around this? I thought I could maybe set up the account on my PC and go from there, but it won't let me do that. It is forcing me to set up on the iPod. Am I doomed to have no iCloud account because I opted for a used device?

See this previous discussion.
icloud: The maximum number of free...: Apple Support Communities

Syncing & maximum number of devices for one app?

I am setting up five iPads for a small business. They are supposed to be identical -- same Apple ID for all of them, same apps, files, settings, &c. I am still working out some of the syncing and access restriction settings. However the business posed a question to me, and I haven't been able to find an answer online:
If an app is purchased once, on how many devices may it be installed?
That is, if an app is purchased for this business on one iPad, can it be downloaded onto the other iPads without further payment? Is there a maximum number of iPads onto which an app can be installed, with additional devices incurring extra fees? Would this number vary by app, and if so, is there a way to find out the maximum before purchasing and installing the app?

http://support.apple.com/kb/ht4627

ICloud error "Maximum number of accounts activated on this device

I keep getting the error "Maximum Number of acounts activated on this device whenever i enter my apple id and password in the iCloud option. Please help me..

Welcome to the Apple community.
It sounds as though you are pressing the "create Apple ID" button when trying to log into your account. You shouldn't use this button, it sounds as though you have used it a few times and have now used up all of your free accounts on that device.

This Apple ID has already restored to the maximum number of devices in the last 90 days

Has anyone seen this error message "This Apple ID has already restored to the maximum number of devices in the last 90 days"? We get this when we use iCloud to restore a master backup to iPads in a school computer lab. The first 9 or so restores go without a problem and then we start getting the error. The iPads are running iOS 5.01.
We previously used iTunes to do the restore and did not have a problem, but it takes a long time to deploy to the 25 iPads. We were hoping that using iCloud would be faster.

9. You’re limited to a maximum of 10 devices. With the ability to re-download content from everywhere, Apple has limited the number of devices that can participate in iTunes in the Cloud for a given account. The new terms allow for a total of 10 devices, five of which can be computers running iTunes. This means you could have five iOS devices and five computers authorized, or one computer and nine iOS devices, or any combination of the two.
Fortunately, this limitation only applies to iTunes in the Cloud features—you can still sync content directly from an authorized iTunes library to an unlimited number of iPods or iOS devices; the limitation only applies to authorizing devices to re-download or automatically download content directly from the iTunes Store.

Maximum number of devices per icloud account

I work for a University and we would like to have all of our Apple devices on one iCloud account for ease of management. What is the maximum number of devices that can be registered on one iCloud account?
Thanks,
Natasha

10 per Apple ID.

What is the maximum number of devices that can be connected with FaceTime?

I have tried to find in theh Apple web pages the maximum number of devices that one can connect to with FaceTime. Specifically, how many iPad2 or iPad (new) devices can connect to each other with FaceTime? What about an older iMac running Mountain Lion with iPads? Or, iPhone4s and iPads? Thanks for any information you can provide.

I don't know of any limit, as long as each device has its own individual identification ( e-mail address, or phone number for iphones)

TS4036 Help plz this massage comes up when i restore from iCloud. You have reached your device limit also says Ur apple id has been restored to the maximum number of the time last 90 days.

Help plz this massage comes up when i restore from iCloud. You have reached your device limit also says Ur apple id has been restored to the maximum number of the time last 90 days.

Have you shared your AppleID with anyone - family member or spouse? Any given AppleID can only be associated with 10 devices at a time (five of which can be computers). Once you reach that limit, the 90 day timeout applies before that AppleID can be associated with another, new, device.
You can see the explanation here - http://support.apple.com/kb/HT4627
All you can do is wait the 90 days, sorry but I know of no way around that. If you think the message indicates an error though, then use the Express Lane web support pages to send a note to the AppleID support folks.

Maximum Number of USB Devices...

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