Archive for the ‘Backups’ Category
I’m trying to download a movie from iTunes but I keep getting a message that my startup disk is full and that I should delete files to create room.
What is a startup disk? Read More »
Please let me know how to transfer data from a MacBook Pro to an external hard drive as per the following scenarios:
1. MacBook Pro’s (mid 2009 model) USB ports are not working but it has Bluetooth capability.
2. I have a new 500 GB Iomega external hard drive that is not yet formated for either a Mac or PC.
a. Can this external hard drive be partitioned in 2 sections of 250 GB each? If so, how would I partition it?
b. Can one partition of 250 GB be formatted for a PC and the other 250 GB be formatted for a Mac, so that one external hard drive can be used for both PC and Mac files transfers. How would I do this?
Thank you in advance for your answers.
If your new Iomega external drive has both USB and FireWire ports, you can use a FireWire cable to perform the partitioning and backup. If your hard drive only has a USB port and the USB ports are disabled on your Macbook Pro, you may have to find an alternative way to transfer, such as going machine to machine, using FireWire Target Disk Mode.
As for Partitioning the drive, there is an application, inside the Utilities folder on your Mac, called Disk Utility. Disk Utility has the ability to help you format your hard drive and partitions. For Windows machines, the format is NTFS. For Macs, it’s Mac OS Extended (Journaled). Your Mac can view both partitions, however the Windows machine can only see the NTFS partition.
I hope this information has been helpful.
Ask Jacob Team
I have 400 to 800 FireWire cables from the last time but forgot how to specifically do it.
Any suggestions appreciated.
The new MacBook Air that you’re receiving has an application that provides for “Over the Air” network-based migration, as the MacBook Air does not have a FireWire port included. However, in order to use the “over the air” method, the originating machine must have an operating system of 10.4.6 or later. Because your iBook G4 has 10.3.9 installed, the automatic migration isn’t an option.
Should I have this same situation, I’d use a manual migration method. Using a USB external drive, back up your data from your home folder. Then go through the standard setup process with your MacBook Air. Once your account is created on the new machine, you can connect your external drive and move the backed up data to the correct folders. It’s not exactly seamless or automatic, but it can provide a safe way to move your data and build a nice, stable system.
Ask Jacob Team
My external hard drive no longer comes up on my Mac when I plug it in and I’m afraid I’ve lost all of my backed-up files forever. Since I’ve only used it on a Mac, I’m not sure where to go where they’ll plug it into a Mac for diagnostic service. I don’t want it to get plugged into a PC and reformatted and then I’m really out of luck.
Any advice on what company to use for this? I’ve heard this type of service can be very expensive. Thanks in advance!
Well most Apple Authorized service centers can help you. You can find the nearest location here.
You can also try and repair the drive with Disk Utility, found in the OS X Utilities folder which, is in the Applications folder. If Disk Utility fails to see the drive, you can try removing the internal drive from the external drive case. It could be that your external hard drive is OK but the drive enclosure has failed. To test this, you can connect the raw drive to your computer with a Newer Universal Drive USB 3.0 Adaptor.
As a side note, you said “I’m afraid I’ve lost all of my backed-up files forever” which would indicate this drive was your backup drive. In a good backup process you need to have at least two copies of every important file. It is not backing up if you move a file to an external hard drive and then delete it off of your internal hard drive. That is not backing up, just changing locations. Any hard drive will fail eventually. So to be backed up, please make sure you have at least two copies and preferably three copies with one being at a different location than your computer.
You may also view this Ask Jacob post for my recommendation on a back up drive.
How do I back up iWork, iLife and Microsoft Office?
I have a computer with iWork, iLife, and Office 2004 (all old versions on Tiger). I will soon either reformat my hard drive or get a new one. How do I make sure that I have all the license files, since it’s been a while and I don’t have license keys any more.
The iLife applications do not have a registration or activation key. Microsoft Office applications store a copy of the activation key in the supporting files so you can get both of those file groups by copying the Office folder and the iLife applications from the Applications Folder. You will also need to Copy iWork applications but you need one aditional file for that to work. Copy this file to your backup media (Macintosh HD/Library/Preferences/com.apple.iWork06.plist ) and then move it back to your drive after the reinstall.
The best way to get this done would be to buy a new hard drive and then use Apple’s Migration Assistant to grab all you applications and files from the old hard drive. Migration Assistant is part of OS X 10.4 or higher.
Hope this helps
I’m shopping for a back-up device for my iMac Core Duo. I understand the faster transfer speeds of firewire and would prefer this type.
The size of my backup is really small; Sibelius music notation files and corresponding PDF files for the instruments. In the last 9 months, I’ve only generated 3.74 GB of material, so a smaller (250GB or even 500GB) is perfect. I don’t want to pay too much for this and have been checking various drives on Amazon, etc.
They all seem to have their pros and cons; LaCie, Western Digital, Seagate, Vebatim, etc. Do you have one you’d recommend?
You’ve helped me in the past, and I hope you can do it again. Thanks in advance…
In general I will just end up getting a basic 1TB Lacie drive for my backup drives. I have one of these set as a TimeMachine Backup drive and another for making whole system clones of my computer that I keep off site.
But if you just want to backup small Data files that will total under 8GB per year, look at a LaCie USB itsakey drive.
This will store a years worth of your data and you can easily take it with you.
I’ve seen much on the web that complains about setting up an Apple Time Capsule. What is your opinion? Does it deliver? Is it a good option for getting my wife (who deals with plenty of large image files) backed up and connected to extra disc space?
I think the Apple Time Capsule is a good solution for people who are using laptops and stay wireless 80% of the time.
The largest issue with backing up is remembering to do so. Time Machine makes backup easy and automatic. However, a small subset of people who never leave a computer at the desk long enough to backup to a USB drive were not being protected by Time Machine. Those people need the Time Capsule so that they too can take advantage of Time Machine’s automatic backup.
If you have a desktop, or leave your laptop connected to external devices on a desk for a few hours a day, you would be best served by using a directly connected external USB hard drive for your backups. The Airport Extreme base station will allow you to connect an external USB drive for network file storage. That drive will be accessible from the network or you can always connect it directly to a Mac and retrieve the data if one day your Airport fails. If the drive in your Apple Time Capsule fails it’s harder to get access to.
Hope that helps you make a decision,
In the late 1980s/early 1990s I was teaching space technology in England. The school used ONLY Macintosh computers. When I came back to the states I had to buy a PC/IBM and gave away my Mac. Now I have 100+ 3 1/4 floppies that I’m desperate to retrieve my engineering drawings and other documents from.
How do I solve this problem? The iMac computers today don’t even have a 3 1/4 drive port. Can you give me some advice?
After you copy those over to your hard drive, keep a copy on your hard drive and burn an archive copy to CD or DVD. Make sure to keep the archive copy someplace safe. The floppy disks will fail over time. The bigger issue will be in reading those drawing files if they are in a proprietary format. I was a big Claris CAD user in my school days and have many of my house blueprints saved in that CAD file format. I keep a copy of Claris Cad running on Mini VMac so that I can read them and create new drawings. It will seem strange, but I have yet to find a modern CAD program to replace Claris CAD.
Check it out and let me know if it works for your files.
I have a G4/800 256/40/CD-RW/Radon upgraded with OS 10.4.11 Tiger plus 512 MB RAM, and superdrive. I want to hook up a WD My passport Essential 320GB to it to back up my hard drive. It shows up in the utility list but I cannot partition it and get an error message This new WD Ext HD works with my friend’s PC and up at the nearby college on their much newer Macs.
Any ideas why I cannot get it to work with my Mac?
You may need to repartition it through the Partition tab in Disk Utility.
To repatriation a drive, select the drive (not the indented Volume) that you want to erase and click on the Partition tab. Change the Volume Scheme popup menu from “Current” to “1 Partition.” Click the [Options...] button and set it to use the “Apple Partition Map.” Then give it a name and click on the [Apply] button. One more click to say that you understand all data will be lost on that drive and then it should work fine for your Mac computer.
It will not work on PCs after that though, it will be a Mac drive.
Hi Jacob, I really enjoy your answers and learn a lot from you in each email. Here is my question:
I just bought an 8-Core MacPro and want to setup a nice little storage system that can work fast and be backed up. So I was thinking about keeping the stock 640gig HD for all my apps, photos and music, and using an external HD that I already have to back that up via TimeMachine.
Then I wanted to buy a 1TB HD that I could dedicate to all my side-work (graphic design, web design and motion design). I then was thinking about buying another 1TB HD to back that up that one via TimeMachine. But now I’m wondering if it would be better to just use Apple’s RAID-software-setup to have the 1TB’s just mirror each other.
What would be the most ideal as far as speed, reliability and efficiency?
Time Machine is great but it does have its limits. You can only backup your boot drive via Time Machine so setting that external drive to protect your main 640 GB boot drive is the right setup. Then using the Apple software RAID 1 (Mirroring) on those two 1TB drives is a smart choice. It is not as fast as having a hardware RAID 5 configuration but it is very reliable. Many of the small servers I setup have been protected by a software RAID 1. I have lost drives but never any data.
The one advantage Time Machine has over RAID 1 is that it will protect you from unintentionally deleting important files, allowing you to go back and retrieve those files. RAID 1 will not let you recover from that kind of mistake. It just protects you from drive failure. So be carful when deleting or overwriting data on the RAID 1 volume.
Other than that it sounds like a solid plan.
I have been backing up a G4 Mac Mini and a G4 iBook on a LaCie NAS HD using Time Machine. I have purchased a MacBook with Gary Mead’s help and intend to do a system “restore” on that machine from the external HD. Will the data/programs from the G4s, stored on that NAS HD, work on the dual-core system?
Unfortunately, the MacBook does not have a FW jack.
When moving from PowerPC based Macs to an Intel Mac, I always recommend using Migration Assistant when you first start up the new Mac. During the initial setup you are given the option to move data over from your old Mac. The new Migration Assistant now allows you to do that over a network connection. Below is a link to Apple article on this process. Most applications should run fine on your system. Universal applications will run at full speed and PowerPC applications can run in an emulation mode of-sorts. It is a good idea to download fresh copies of Universal software, if available online to replace older version moved over during the migration.
Network based data migration using Migration Assistant.
In most cases you should be fine. If your ethernet enabled migration is interrupted, it will pickup where you left off so you do not need to guard it during the process.
I have a few questions about Time Machine.
1. If I change the name of a Machine (not the hard drive) in the Sharing Pref Pane, will that confuse Time Machine? That is will it still be able to access previous backups, or will I be limited to backups made after the name change?
2. What, exactly does Time Machine do when the backup drive is full? Does it delete some files? If so, how does determine which files to delete?
3. Can I manually delete redundant (or otherwise backed up) files from Time Machine?
Changing your Apple computers name will not affect your Time Machine history or cause additional, redundant, backups. When you make the system name change your Time Machine folder is changed to the new name and updates continue uninterrupted. When the TM backup drive is full, it starts deleting old files. These files are considered old if they were changed since the original copy and it is the oldest version of the file. If you had a Word file that you edited on November 1st, 3rd, and 20th you would have three copies of that file. If you ran out of space, Time Machine would delete the one that was saved on November 1st.
Manually deleting Time Machine files would be a bad idea. They are not only copied to a folder, but also linked and indexed. If you delete them from Finder it has the potential to damage the integrity of your backups. It is better to just let Time Machine manage itself. Like the Infomercial guy says, “Set it and Forget it.”
Hope that helps,
The new MacBooks and MacBook Pros do not have FireWire ports anymore. Looks like Apple is abandoning FireWire on new Laptops.
How can I clone one of these new Mac laptops to an external drive and make the drive bootable so it can boot up and be used to clone back to the laptop drive if needed?
Only the new Unibody MacBooks have had a FireWire port omitted from the design. The new MacBook Pros have a FireWire 800 port that supports FireWire 400 via an adapter. The MacBook Pro can be booted into Target Disk Mode, just as with previous models. However, the MacBook’s lack of FireWire signals a shift in how Apple expects Macs to migrate, post-Leopard. Time Machine is the new migration and backup tool of choice. Fresh Leopard installs let you restore from a Time Machine backup, regardless of what system that backup was created from. So assuming you have a system that you have been backing up with Time Machine, you just connect your new Mac to the USB Time Machine drive, migrate, and you are running again.
Another consideration is that most modern Macs have Gigabit Ethernet. Two Macs connected via a Gigabit network can transfer data faster than two Macs connected via FireWire 800. I think we will start to see more Ethernet-based solutions from Apple as Gigabit becomes the modern standard.
There are a few technical reasons why you would want to install and then Migrate 10.5, apposed to just cloning, but you can still use the cloning method. All Intel Macs support USB 2.0 booting so you can just start cloning to a USB hard drive instead of a FireWire one. It should be procedurally the same.
I accidentally emptied my trash on my Macbook Pro and there were some important files in there. Is there a way to recover these?
The “Trash” is a terrible place to keep any important files, but I assume you know this and it was an accident. Also, this would be a perfect rescue job for Time Machine coupled with an Apple Time Capsule. If you had been using Leopard’s Time Machine you could have gone back in time to when the data was not in the trash and then recovered just those files to your current system. If you are desperate to undelete, then you will need a program like Data Rescue.
With this software you can reboot your system off the CD and then use the undelete scan function to recover as much data as possible from the drive. The main thing is stop using your Apple computer. Every file you get, including this email, could be overwriting your deleted files. Even leaving your computer on could allow those files to be overwritten by system temp files.
(I’m a) Pro videographer with lots of media concerns. Foremost; protecting content of video from projects (lifeblood).
So someone recommended I use a drive like 1.2 million hours MTBF. Model # for 500GB WD5002ABYS (16MB cache) or WD1002FBYS WD7502ABYS (32MB ca); rather than a consumer storage. I’ve also been told to use single drive FireWire with back-up to esata drives. I need to protect this stuff because it’s hours of editing.
I use a Mac Pro GHZ3 dual. Also, want to upgrade software from Tiger. Should I wait for the new Snow Leopard?
Data protection is essential to everyone, not just professionals, but as a professional videographer your data is your money. Mean time between failures (MTBF) is a poor choice for considering data protection. It’s far better to assume a drive will fail at any time, and put yourself in the position that drive loss will not hurt you. We lose drives from our XServe RAIDs here, from time to time, but powermax.com stays up and running as we cycle a new drive in its place. There are many ways to configure a system to have protection.
The simplest date protection setup is to have two drives in a RAID 1 configuration. Essentially you have two identical drives in your Mac Pro getting duplicate information. Disk Utility in your Utilities folder will let you partition two drives together in RAID 1, after that initial setup they will stay in sync until one fails. Any drive will work for this purpose, you just want to use identical drives when creating the RAID.
The costlier and more complicated way would be to use an external RAID 5. This would let you have a portable and secure “Data Piggy Bank” for your video files and projects.
Check out the great LaCie 4big RAID backup and be sure to consult with one of our sales people for the best fitting RAID.
I have 2 G3’s; one has 6GB the other has an 80GB hard drive in it. So when I turn the 80GB on the only thing that comes up is a blue “?” and the Mac icon folder. What does that mean and how can I get the 80GB hard drive to work and move my data to it? The hard drive is a Jacobtor 3.5 series 80GB. The 80GB came from a friend’s machine, he seem to think it’s looking for the previous network.
The alternating “?” and Folder Icon indicates that your computer cannot find a bootable Operating system. Not all B&W G3 towers could handle bigger drives, so that may be what is causing the problem. The Rev A G3 Logic board couldn’t handle large drives but the Rev B logic boards can take up to 120 GB drives. Look for the Apple copyright information printed on the logic board and below it will be a string of characters in one of the following two configurations XXX-09XX-A or XXX-10XX-A. The “X” is used in place of unimportant information. 09 indicates that it is a rev A logic board and the 10 means that it is a rev B.
If you have a Rev B Blue and White G3 logic board, then you need to make sure that the drive is set to Master and is the only drive in the computer. It may also be that a more advanced version of the Mac OS is on the drive than what the G3 can handle. You should also download any G3 Firmware updates needed to run OS X.
If you have a Beige G3, and not a Blue & White one, then you are running into the 7 GB boot volume limit. OS X has to be installed on a partition of less than 7.4 GB and that partition must also be on the Master drive on the IDE cable.
Your best option would be to reformat the drive and then reinstall a copy of the Mac OS. To move over your old data you will need to put that 6 GB drive into an external enclosure, like this Macally Storage Cabinet, and use Firewire to bring it over to the B&W G3 or put the 6 GB drive into the Beige G3 as a second drive to copy over the data.
I would also recommend that you upgrade your Mac computer OS to Leopard, if you have not done so already. Mac OS X 10.5 Leopard’s Time Machine feature is a perfect background backup utility for you. Every hour, your iBook will be backed up and you could go back to a version days previous in order to recover deleted chapters.
You can also choose “Import to Library” from the “File” menu from within iPhoto. You will need to navigate to the CD and select the photos you want from within the import window.
I would also recommend that you upgrade to Leopard, if you have not done so already. Mac OS X 10.5 Leopard’s Time Machine feature is the perfect background backup utility for you. Every hour your Book will be backed up and you could go back to a previous version to recover deleted chapters.
Glad to see there’s a well-informed person out there who’s willing to help people out with suggestions. I don’t know much about what I’m asking – I was assigned to research and find out the best way to store the images, so I found out about RAID, then immediately started looking for the best kind, and skipped all the steps in between there. So I apologize if I seem way out of my league.
I work for a successful photographer based in Seattle, WA, and we’re having a bit of a storage dilemma. Right now, we’ve got about 1TB of images, worth well over $1 million total, sitting on two cheap drives, and our trust in them is starting to falter. We’ve decided that a RAID system is probably the best way to go. With that, we’re looking for a large level of redundancy in order to store the images, something along the lines of what the ProStudio RAIDs by EZQuest do. At this point for us, cost is no object, we’re just looking for the absolute best, most reliable way to store (and mirror) the images many times over. What do you suggest?
Working with RAID storage systems is a complex subject. The way you interface with the storage is just as important as what RAID type you are using for redundancy. It is essential to note that RAID 0 (zero), also know as a Striped RAID, offers no data protection and should not be considered as a viable backup / long-term storage solution. You are looking for a guarantee that the files your studio makes its income from will survive a drive failure. For that you need to look at a RAID 1 or other complex RAID system.Many RAIDs are selected for Speed, Capacity, and Redundancy. The first two concerns are less of an issue for your needs, this is more important for a video editor or database server. What you really are interested in is the redundancy to protect your files, which makes the available selection much wider. In your situation you have to limit the large list of options down, so connectivity is a great way to do this. The ProStudio RAID by EZQuest is a fine RAID solution for the Video editing crowd but it requires being tethered to a Mac Pro. Depending on how you process images in your studio it may make more sense to have a variety of connections that all systems can connect to when depositing files or retrieving them.
If what I am suggesting is appealing to you, then try looking at one of the LaCie Biggest Quadra 4TB. You would want to run it in a RAID 5 or RAID 0+1. With this setup, practically any computer you use will be able to connect to the drive, freeing you up from system downtime affecting your ability to access your files.
The one thing missing in this setup is concurrent access to the files. This setup is aimed at one computer at a time connecting to the drive. If you have many computers needing to access these files, you will want to look at a file server instead. A custom ordered Mac Pro with an internal RAID and OSX Server installed would work well for that purpose.
I hope this gets you started, as you can see it is much more than a simple “this is the best RAID” conversation. It may be worth talking about your options with one of our sales consultants. Anyway, I hope this helps!
I want to upgrade the HDD in my MBP. Once I’ve replaced the HDD and have formatted it, can I use Leopard Time Machine from the external HDD to just port over all of my information from my Old HDD that was being backed up by Leopard? Or is there another program that I can use to migrate my information over?
Leopard will import from a Time Machine backup. After you install Leopard on the drive, you will be asked if you want to import the data from an old Mac or a Time Machine backup. It is nice and clean way of moving your data to a new drive or computer.
I purchased a 17″ PowerBook from PowerMax a couple of years back and have recently installed Leopard. For sometime I’ve been exploring Network-based hard drives to back up my Apple and Window machines from my network (looking at Buffalo Tech and Lacie). Time Machine seems to have thrown me a curve. My questions are:
Can Time Machine back up to a network drive or do you need a direct USB connection?
Second, I’ve read that Time Machine requires its own space and that it cannot be shared with another machine (i.e. my Windows XP box). Is this true? And, last question if you can use network drives, do you have any suggestions (there doesn’t seem to be a clear winner from the reviews I’ve read)?
The types of drives suitable for Time Machine use have varied over the Leopard development process. Figuring out what may work in the future is tricky. If you have multiple internal drives, you can designate one of them as a Time Machine drive. Any FireWire or USB 2.0 drive can also work as a Time Machine drive. The one prerequisite for stable performance is that a Time Machine drive should be formatted as a Mac OS Extended volume, with a compatible partition table. The type of partition scheme you need to use changes based on the processor type. If it is an Intel-based Mac, then the drive should be a GUID partitioned drive. If you have an older PowerPC Mac, those drives should use the Apple Partition Map. The partition scheme is selected from the Options button in the Partition Tab of Disk Utility.
Because of the partitioning of those drives, it can be difficult to get them to work with other computer platforms (i.e. Windows). In most cases it’s best to keep a Time Machine drive dedicated to backup work. You can, however, have many computers use the same Time Machine drive. You can also do that sharing over a network, wired or wireless. The first step is to designate one Mac to connect to the Time Machine drive. This can be FireWire, USB 2.0, or an internal drive.
Set up the drive as a Time Machine drive via the Time Machine section of the System Preferences. Then go to the Sharing System preference and enable File Sharing. In the File Sharing’ details section, click on the “+” button under the Shared Folders section. Select your Time Machine drive and you will then see it on the list of shared items. From your other computers on the network you can connect to the shared Time Machine drive; the same as you would any other network drive. Make sure you save the user name and password in the keychain when you connect. Then you can use the System Preferences on that computer to designate the shared drive as a Time Machine drive.
This is a great solution for people with desktop and laptop Macs or a household of Macs. It may not be the solution that you need, because it will require at least two Macs running Leopard, but I hope it helps.
Recently my G4 PowerBook suddenly developed nasty ticking noises, resulting in my losing all of the contents of my hard drive, and yes, I had not backed up for the last 12 months.
So I’ve now purchased a dedicated LaCie external drive and have used the LaCie backup facility to copy everything to the external hard drive.
This took some time, since I’d reloaded all of my programs and what I’d salvaged from the last backup of documents….
But then there were a large number of files and thingys that didn’t successfully back up. At least a couple of hundred of them. Some of them looked like Adobe related things (I have CS as one of the programs…)
I felt silly not being specific last night when I emailed about my LaCie
backup difficulties, so I went through the process again. It took about 3
hours, and at the end there were hundreds of files not backed up, including
my user file word documents (very important) that were in folders, and also
many of my photos in the iphoto program (also of extreme imptance to me)
The message read: "Error copying file resources. You may have to re format
your destination volume to HSF+"
Could you please advise me what I should do?
I understand now what’s happening. When Lacie drives come from the factory they are formatted in a PC format, which Macs can read and write to. For best performance you should always reformat new drives in a Mac format. You do this by opening Disk Utility and selecting the LaCie drive from the left hand column. Then click on the Erase tab and change the "Volume Format" to "Mac OS Extended" (AKA HFS+). Clicking on the Erase button will reformat the drive. You will lose all data on the drive when you format, so make a copy of what you need. Instead of using the LaCie program, however, I would recommend you use Carbon Copy Cloner.
I manage a 30-machine high school lab. We have a G-5 XServe and a bunch of eMacs. What I am looking for is an automated system (software based) to regularly back up our user files. We need to be able to back up 1 to 2 times a week and be able to go back up to a month for recovery. (Meaning, the latest backup cannot overwrite yesterdays backup) The server has a80gb (OS and user files are here), and a 250gb HD (where I conduct poor manâ€™s manual backups.) I looked at Retrospect but forum reviews indicate it has gone downhill forOS 10. What are your thoughts/advice on this issue?
You are right to question Retrospect’s performance and design. It is a processor hog and can require a lot of skill to set up. Itâ€™s an old application that has only received a minor face-lift for OS X. All that being said, it’s the only competent game in town in order to do what you want. An expanded Workgroup version of Retrospect, installed on the XServe, will be able to backup all your client eMacs in dated incremental segments. You can pick the date to restore, but still avoid filling the 250 GB hard drive with redundant data. I have asked around about alternatives but every other option costs more and is not quite what you need.
I have one hardware-based solution that could simplify the process and give you the added security of off site backups. “Broken Mirror” backups are used in many businesses to provide dated backups that can be stored off site. It will require a change in how your computer lab operates. You would need to setup “Portable Home Directory” services on the XServe. This would mean that the XServe would host all user data. Then you would need to create a RAID 1 or “Mirror” RAID set of that 250 GB hard drive. All the User accounts would be kept on that Mirrored RAID and always have the latest user data. Then when you want to create an archive copy of that data, you break the RAID 1 and remove one of those 250 GB hard drives. Then you replace it with a new 250 GB hard drive and repair the RAID 1. You can end up burning through a lot of drive modules this way but it will protect your data the best without the need for software backups.
It is probably best to use the imperfect Retrospect because of the alternatives’ cost and complication.