Unable to select two drives for time machine backup?

I had a notification from Time Machine saying "This backup is too large for the disk..." and that I needed to omit items or select another drive. I've read online that it's possible to select multiple drives for Time Machine backups (so it switches between the available drives). When I go into Time Machine preferences and click "Select Disk" the drive I want to use in addition to my current Time Machine is there, but when I choose the additional drive I do not get the option to replace or "Use Both" (like pictured). Instead the additional drive is selected as the sole Time Machine and the current Time Machine drive is replaced.
In short, Time Machine is not giving me the option to "Use Both" - why would this be and how do I remedy this?
Thanks.

The reason is that that feature is Only offered in "Mountain Lion" OS X 10.8; and you are using "Lion" 10.7.
Hope this helps

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Is it possible to use more than one external hard drive for Time Machine backups?

I want to use two hard drives for Time Machine backups.
Bigger one keep at home and be sure it is safe.
Second one (very small pocket size) keep with me for travels.
I want to backup to both drives to be sure I can restore everywhere and to be sure if something bad happened with my small travel disk I can restore from home backup.
Is there any problem with listed schema? Is it normal for Time Machine to handle backups for different drivers and keep everything consistent and smooth?

I really need some help! I have been using an Iomega NAS 1TB HD for the past year. And I received an error message. I believe I have ran out of memory on this drive.
Then recently in the last couple of months I got a ReadyNAS Duo 2TB with 2TB RAID. Should I switch my back ups to this one and delete the other back up file or keep the old back up image file on the Iomega?
Can I transfer the old image back up to this new ReadyNAS? How do I do this?
I appreciate any help.

Is it possible to use an external hard drive for time machine backup and also as a regular hard drive?

Is it possible to use an external hard drive for time machine backup and also as a regular hard drive?

I am using an external drive in the exact way that you described. You just keep it plugged in to the computer when you want to access the movies and files. In order to put files on it, just go to finder open up the drive under devices and drag and drop files onto the drive. It is just like using a usb drive with a terabyte of space.

HT201250 new external hard drive for Time Machine backup suggestions?

Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue

Bluehowler wrote:
Ok, I have 3 external hard drives; unfortunately I've used them on my PC and they are read only on my iMac. So, I need to buy a new external hard drive for Time Machine backup. I'm a little confused; can I buy any EHD and them format it so Mac can use it or are there special EHD's I need to purchase?
Anyone have a particular EHD that is working well for you? Thanks, Blue
Unless you need all three external drives for your PC, you can reformat in one of them in Mac OS Extended (Journaled) for use with Time Machine. However, since Time Machine backs up hourly, you'd need the external drive to be running constantly. That means ventilation of the drive becomes an issue since some, such as Seagate, can get very hot in their sealed enclosures. Some drive manufacturers try to get around this by spinning down the drive when not in use, but I've read complaints that that doesn't play well with a Mac. So whether you reuse one of your current externals or get a new one, it's a good idea to keep the drive's ventilation in mind.

Swapping multiple hard drives for Time Machine backups

I would like to always have one external hard drive attached to my iMac for Time Machine backups, and another external hard drive off site - periodically swapping the two. The though is that if there is fire or theft, it won't help to have a hard drive onsite attached to the computer, because both the iMac and the hard drive could be lost.
Is Time Machine smart enough to allow me to configure two drives, so that whenever I plug in one of the drives, it can figure out what needs to be backed up?

I do the same thing, but I have to tell Time Machine each time I switch hard drives. I have not figured out a way to automate it. Might be better left manual.
B

Can you use the same external hard drive for Time Machine backups and as an additional storage drive?

I have an external HD that I've been using exclusively for Time Machine backups. I need to clear space on my hard drive, so I was thinking to move music & photos to an external drive. Wondering if I can use the same one I have (which I'll aslo keep using for Time Machine) or if I need to get another drive.

Hi Jossydtaylor,
Time Machine can use either an entire external disk or a partition of that disk:
OS X Mountain Lion: Disks you can use with Time Machine
http://support.apple.com/kb/PH11171
You can use Time Machine with a Time Capsule, and with USB, FireWire, and Thunderbolt disks. The backup disk can be directly connected to your computer or be on a network. If the backup disk has been divided into partitions, you can use one of the partitions.
If the disk is partitioned using the Master Boot Record (MBR) partition type, some partitions may not be available for use with Time Machine. The GUID Partition Table (GPT) partition type is recommended.
For more info on partitioning, see this article:
Disk Utility 12.x: Partition a disk
http://support.apple.com/kb/PH5845
Cheers!
- Ari

HT201250 How can I revert to my internal drive for time machine backups after using an external drive?

Hi. I've been using an external drive for time machine back ups and decided to revert to my internal drive, but it isn't available in the time machine options. The only available option is to set up a time capsule, which I don't own.
Is it because not enough space is available on my internal drive (approx 50GB)?
Thanks!

50 Gb free on your internal drive is relly very low and of course not enought for a any kind of backup.
How big is your internal HD ? If you have left only 50 GB free it is probably 90% full. Let's imagine you have a 500 Gb. This means 450 Gb data and 50 Gb free. How can you backup 450 into 50 ?
Second point. The backup on your internal HD is a nonsense evenif it is big enough. If it stops working you will have no bakup.
Do you have an iMac or a portable ?
The portable automatic uses the internal HD if the external is not connected, but this is intended for a short time.
This could give you some more links to read about https://discussions.apple.com/message/20726927#20726927

Using external hard drives for Time Machine backups

I would like to let everyone know about an important issue regarding what type of media to use, or better said not to use for Time Machine backups.
I tried to use a RAID 0 array disks ( FIY: RAID is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement.), but after a few minutes the backup suddenly stopped giving me a message of failing to write to the disk.
I tried to back up several more times, but the result was the same. I called Apple Customer Support, they said there was nohing wrong using a RAID 0 array disk combination.
I checked the RAID disks with disk utility, the disks were okay, but it did not solve the problem.
I reformatted the RAID disks, but that did no help either.
Then I used a different disk not part of any RAID array, and the Time Machine backup was able to successfull finish he task.
I called Apple to tell them about this issue, and they finall confirmed I was right:
Conclusion: backing up to a RAID 0 array disks using Time Machine does not work

Is there anything else on the drive? If not, just erase it with Disk Utility.
If there is, have you emptied the trash? That will take a very long time, and may present problems wtih locked files, permissions, etc. If so, see #E6 in Time Machine - Troubleshooting.

Select certain files for Time Machine backup?

Is it possible to select only certain files for Time Machine backup? Or does it automatically backup everything, including what you don't want saved?

Time Machine will backup all user files unless you select the ones you do not wish to have backed up. see the attached from System Preferences:
Ciao.

Can no longer connect to shared drive for Time Machine backups

I have a Firewire drive connected to my iMac and sharing enabled. 2 MacBook Airs then connect wirelessly to the same network and backup to the drive.
It has worked perfectly for the last couple of years with Lion and Mountain Lion.
Yesterday I upgraded to Mavericks and now neither laptop can see the shared drive in Time Machine, although the drive displays quite happily in Finder.
I have disabled and re-enabled sharing. Booted and re-plugged the drive in and still when I go to Time Machine preferences and select drive, nothing is listed.
Any ideas?

After hours and hours of constant searching and testing I still can't get it to work?
Any ideas?
I think sharing has changed in Mavericks.

Problems Moving to New Drive For Time Machine Backups

I'm moving to a new, bigger drive for my TM backups. So with the help of some suggestions here, I:
1. Turned off Time Machine
2. Formatted the new drive with "Mac OS Extended (Journaled)"
3. Cloned the old drive to the new with SuperDuper (Erase and copy)
4. Turned on TM and told it to use the new drive (with a different name than the old one) as the backup drive.
That was twenty minutes ago. TM backups usually take a couple of minutes. The only time it went this long is when it was doing its first backup. Is that what's happening? I've still got the folder structure you'd expect -- with a new folder for the backup going on now.
In addition, the clone took forever -- five hours for 120 GB over Firewire 800. It seemed to slow down as it went on, too.
Does anybody have any suggestions? Should I stop the current backup and try something different?
Thanks very much to anybody who can help,
Steve

Steve Cohen4 wrote:
Cool. A "deep traversal." Sounds like something you do when you make the jump to lightspeed.
Anyway, I did let it finish and everything seems to be normal now. The next backup took just two minutes. Much better.
Thanks very much for your help.
I trust that you have no issues with the procedure I used?
not sure which procedure you mean but you should be fine now.
Steve

Auto mount/eject external drive for time machine backup/restore

I have an Iomega ultramax drive connected via firewire 800 for my Time machine backups.
This drive will automatically spin down after a period of non-use. I like this as it means lower power usage and lower risk of data loss (head crashes etc..).
My problem is, when the drive spins down like this, some file open operations pause until the drive spins up again. I cannot remember exactly which applications I have had the problem with, but I assumed that this was part of the OS. This delay can be up to 5 seconds or so and is really annoying.
Assuming this is not just a specific third party application thing. My suggestion to Apple is to do one or both of the following:
1) Multi thread the file open dialog (process?) so that is comes up instantly, and then adds the drive when it has spun up.
2) Modify time machine so that it can automatically mount/eject the external drive just when doing backups and restores.
Currently I have a bit of a messy work around to this problem where I have a loadd scheduled shell script that runs every hour that mounts the drive, runs time machine to backup and the ejects the drive. It works, but is not perhaps as nice a solution as it could be.
Does anybody else suffer from this problem?

Yes that is correct, the drive spins down and remains mounted.
To be perhaps clearer. The problem is not essentially a time machine problem, it is to do with whatever implements the file open capability that other apps use. In the above sitation, there is always a delay for the drive to spin up when I go to open a file (perhaps five seconds) in other applications. I assume this delay is caused by the file open process waiting until some data is retrieved from the external drive before giving me the option of choosing a file. This delay is annoying, as I do not ever want to open a file from my external drive (this is dedicated to time machine backups) when I am using pages, or any other application other than a time machine restore.
This particular issue is similar (but I suspect nowhere near as bad) as one of my pet hates about windows XP. In windows it appears that the explorer will wait for a response on all its connected drives (hard disks, mounted cds, network drives), so any sort of network connectivity or hardware delay will cause explorer to freeze. As explorer seems to be embedded in most things you do with the OS, this can cause anything or everything to freeze (web browsing, you name it).
In my setup, as I have the external drive totally dedicated to time machine backups, another thing that would fix the problem for me is the suggestion number 2 I suggested where time machine auto mounts for the backup and then ejects after the backup. With the feature, then the external drrive will only ever be mounted for short periods of time (the above problem does not ocurr if the external drive is not mounted), and when it is mounted it will be spinning, so I will never have my file open delay. I would however have a short delay when doing a time machine restore for the mount of the drive, but this is a much rarer event the using file open in all my other apps.
Thanks for the info on the feedback link, I will post this to that.

Can I use my 2TB Time Capsule ONLY as an external hard drive for Time Machine backups?

Hi...wondering if somebody could help me out there.
I currently have an older Apple 2TB Time Capsule (previous generation) which I'm using as both my WiFi access point, as well as my Time Machine backup location for both my iMac and my MacBook Pro.
We've been having slow WiFi issues in our home, and seeing as how this Time Capsule is a number of years old, were thinking of upgrading to the faster WiFi routers with 802.11ac capability. I'll be honest when I say we were considering other options, beyond the newest Time Capsule.
My question is, can we somehow use the 2TB of storage on our current Time Capsule for the purpose of backing up our computers with Time Machine, but NOT use the WiFi functionality of the Time Capsule itself?
I'm assuming if I manually plugged either my iMac or MacBook Pro (wired ethernet) into the Time Capsule, I could likely get that computer to recognize and use it for Time Machine purposes, but I'd like to use it to backup both computers, ideally wirelessly on the MacBook Pro.
Any help would be great.
Right now I'm running a DSL line into a DSL modem, which then runs ethernet into my Time Capsule. From there, I have a 4 port switch connected for wired devices (we wired our home with ethernet jacks in almost every room). We also have an Airport Express to extend the range of the network.
Thanks,
Jason

You can bridge the TC and plug it into whatever wireless router you buy.
There is no need to turn off the wireless in the TC.. but you can set it up as a secondary wireless network. That is totally up to you. I find the Gen4 TC very fast on 5ghz.. but you need it to be close to the computers.. in your case that should be dead easy.. simply plug it in by ethernet in the same room as the iMac say.. and set it up with bridge and the imac plugged into it by ethernet.. one computer then can access the internet and backup via ethernet with huge speed improvements.. the laptop can then use whatever your new router wireless network.. or the TC one if it is close enough..
So there are plenty of variations and your setup is easy to handle with the large amount of ethernet you have.
Just post again if you need specifics.. but I need specifics to give them!!

USB hard drive for Time Machine backup?

I'm looking for a USB hard drive that actually works with Time Machine. I have a Western Digital 320Gb passport HD. When I try to run TM, currently with Snow Kitty and previously with Leopard, TM seems to hang at 'preparing backup' and then I get error messages that the drive was unexpectantly removed, even though I didn't touch anything.
Assuming it is the portable Western Digital HD what is a good brand/make to use for TM backups. If the particular drive is not the problem, what should I look at?

Did you prep the drive before you started using it? Do the following:
Extended Hard Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID (for Intel Macs) or APM (for PPC Macs) then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

Using a Second External Drive For Time Machine Backup

I have been using Time Machine for almost a year and the external drive I'm using is almost full. Can I switch to a second external drive? If I decide to keep using the same drive is there a way to keep my original backup? Is there information that I need from that first backup that I did?
Thank you!!!

bvasel900 wrote:
Hi, and welcome to the forums.
I have been using Time Machine for almost a year and the external drive I'm using is almost full. Can I switch to a second external drive?
Yes, if that's what you want to do (see below). If you start "fresh" on a new drive, your first backup will be a full one; everything on your system. Or, you can copy your current backups to it via the procedure in item #18 of the Frequently Asked Questions *User Tip* at the top of this forum. TM will then continue making it's usual "incremental" backups, and you can erase the old disk and use it for other things.
If I decide to keep using the same drive is there a way to keep my original backup? Is there information that I need from that first backup that I did?
Probably not. As Mr. Peck noted, TM will automatically delete your oldest backups when it needs room for new ones (unless you have the +*Warn when old backups are deleted+* box checked in TM Preferences > Options).
But unless you've been deleting things from your internal HD, counting on TM to keep it's backup copies indefinitely, you won't lose anything you need.
That's because of the "magic" of Time Machine. Each backup is an "incremental" backup, copying only the items that have been added or changed since the last backup. But by using "multi-links" to the backups of items that did not change, each backup is, in effect, a full, complete copy of your entire system!
So when TM deletes your oldest backup, all it will be deleting are it's copies of things you changed or deleted long ago.

Unable to select two drives for time machine backup?

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