Fusion Drive and sleepimage

Hello,
if you buy a new Mac with a Fusion Drive, where does OS X put the sleep image? On the SSD or the HD?
By "sleep image", I mean the file that holds the RAM while the Mac is in hibernation mode. It normally resides in /private/var/vm and is named "sleepimage".
Markus

I would guess the SSD, if only because it will allow the Mac to go to sleep faster.
Also the few articles I've seen about Fusion is that all writes go first to the SSD, then some time later Mac OS X may decide to migrate the data to the HDD. But since the Mac is now a sleep, there is no later. And if the Mac needs to use the Sleep image when it is woken up, the Mac would recover faster if the SleepImage was on the SSD.
All of the above is total speculation. I do not have a Fusion Drive, and I have not read anything about where the SleepImage is stored when you have a Fusion Drive.
ArsTechnica.com has a very good article about the Fusion Drive.
<http://arstechnica.com/apple/2012/11/achieving-fusion-with-a-service-training-do c-ars-tears-open-apples-fusion-drive/>

Similar Messages

I am planning to buy an iMac 21.5 inch with Fusion drive and 16 GB RAM while i visit USA for a conference. My country of origin is India. Once i am back to India, will my iMac be covered by the Apple's Protection Plan?

I am planning to buy an iMac 21.5 inch with Fusion drive and 16 GB RAM while i visit USA for a conference. My country of origin is India and the option of configuring to my need is not avaialble here in India. My concern is once i am back to India, will my iMac be covered by the Apple's Protection Plan if something goes wrong here in India?
I recently came across some posts regarding International warranty related issues for iPhone and iPad....hence this crossed my mind...
Waiting for response from the support group members...

Thanks Ralph
This essentially means that if my iMac develops some problem (both software and hardware) in my country (India), it will be completeley attended (even the whole system requires replacement) by the AASP in India...is that what you say?

HT5446 If I buy a mac mini with a fusion drive and add windows using boot camp, can I make the SSD function be dedicated to the windows partition?

If I buy a mac mini with a fusion drive and add windows using boot camp, can I make the SSD function be dedicated to the windows partition?

Additional information from Linc's post. Basically, only one additional partition can be added to a Fusion Drive and it resides on the HDD.
Do computers that come with a Fusion Drive support Boot Camp?
Yes. Use the Boot Camp Assistant to create a Windows partition and install Boot Camp. The Windows partition will exist on the hard disk drive, not the Flash drive, and is not part of Fusion Drive Logical Volume Group. 3TB Fusion Drive configurations need to update to OS X Mountain Lion v10.8.3 or later to install Windows 8. See iMac (27-inch, Late 2012): Boot Camp alert with 3T hard drive for more information.

Fusion drive and logic?!

hi all, im going to have a new i mac i7 27 inch and bought it with a fusion drive. i saw some articles that claim fusion drive isnt good for logic work??
please let me know if its true and if I now have to start worry
thanks.. and hope it was good decision to buy the fusion drive.
Arad

As a single internal drive, no... a 7200rpm drive won't help...
You need a seperate drive for your OS X and another drive for your samples...
If you were thinking about patitioning the internal 3TB drive.. Partitioning such a large drive actually slows down the performance of the drive... and trying to run everything off an unpartitioned single drive is not a good idea either... though better than using partitions.
Personally, I'd get the smaller internal ITB HD for OS X and Applications etc.. and then use the $150 saved to get a fast 7200RPM FW800 (using a Thunderbolt to FW800 adaptor) /USB3 (Though be aware often FW800 drives often perform better than USB3 drives because of the overheads USB3 places on the system) or Thunderbolt external HD and use that for your samples/projects.

Fusion drive and backup/restore issues

Hi,
since I installed a fusion drive on my early 2008 iMac, consisting of an internal 256GB SSD and an (external FW800) 320GB hard disk, I occassionally run into trouble when system updates are pending. In the past, at worst the time machine backup couldn't be restored and I had to reformat and reinstall the system from scratch - which is not really comfortable!
Currently, running Mountain Lion, when I try to select the startup disk, it complains that Boot-Caches on the Boot-Helper-Partition cannot be created. Nevertheless the system starts fine (and runs fast ;-).
Before upgrading to Mavericks, I would like to know
- if someone else ran into similar problems with fusion drives, when updating/upgrading system software.
- Is it normal that a Time Machine backup cannot be (completely) restore a Fusion drive?
Yes, I know that having the harddisk part of a fusion drive externally is not recommended/supported by Apple - and my Mac is nearly 6 years old, but that would not explain why system updates/restores nearly always fail and sometimes the Time Machine backup drive has a broken file system (needed reformatting)! And I always checked the disks with Disk Utility prior to updating...
Any comments are appreciated.

You can file feedback here. The more who file the more the faster the issues may be fixed.
Also you shoud look on the CCC forums.

Fusion drive and external data drives

How does Fusion drive behave if you have data on an external device? I just odered a new Mini and I'm a Logic user with hundreds of GB worth of data on an external RAID 5 exclosure. Will files stored on the RAID be copied to the Fusion Drive when accessed frequently, or will that functionality be strictly for the boot volume?
Thanks!

You can definitely create a Fusion Drive using an external drive to add capacity, and in fact it can be a great thing to do as the SSD will eliminate most of the latency involved.
The SSD will contain whatever the most frequently used blocks are, and these will moved from your HDD(s) onto the SSD to provide the performance improvement. This means you could potentially end up with any number of your working files on the SSD depending upon how often you use them (or have been using them recently). This is important to keep in mind; the SSD in a Fusion Drive is not the cache as a cache-disk, meaning that if the SSD fails you will lose data and have to rebuild your Fusion Drive from backups.
This will essentially eliminate the redundancy advantage of RAID-5, as while you can replace any HDDs that fail as normal, an SSD failure will render the volume unusable.
I'm actually currently interested in whether a RAID-1 of SSDs can be used within a Fusion Drive, as it could allow the SSD part of the Fusion Drive to be given redundancy too, in which case the setup would be safe as it'd be 2x SSDs in RAID-1 + HDDs in RAID-5, giving you one to two disks worth of redundancy. However I suspect it won't work, as I believe Fusion Drive just queries each disk to determine if it is an SSD, and of course an Apple RAID won't identify itself as such.

DIY Fusion Drive and RAID 5

Hi everyone!
I have spent several hours by reading various forums but haven’t found any definitive answers.
I have a 12 Core Mac Pro with the following setup: one 1TB SATA hard drive that carries the system and applications. For the files and storage there are three 2TB SATA drives in RAID 5 controlled by Apple RAID card. I am going to install a 512 GB Samsung 840 Pro SSD drive in the optical bay and have initially planned to use it just for the system and applications, but am curious if the following is possible.
1) Is it possible to combine the RAID 5 array with the SSD and create a Fusion drive?
2) If yes, will it retain all the features of the RAID 5?
3) Should TRIM be enabled?
Thank you in advance!

TRIM directly addresses the shortcomings of having only garbage collection available. SSD controller manufacturers and designers (including SandForce, the controller manufacturer for OWC's SSDs), recommends that TRIM be used with their products. So does Samsung.
For example, here's a 2011 article from OWC describing how you don't need TRIM on their SSDs and how it can in fact hurt performance or reliability.
That article has been discussed here on MacInTouch before. In my opinion it's bad advice, and inaccurate in some of its assertions. It also ignores the recommendation made by SandForce to use TRIM with their SSD controllers. But even if one were to take that article at face value, applying that advice to SSDs other than OWC's makes little sense.
The reason I'm advising against TRIM is simply that it's yet another driver-level modification of the OS, and these always carry potential risk (as all the folks with WD hard drives who lost data can attest to).
Apples and oranges comparison, for a variety of reasons. The short of it is that TRIM is supported natively in all recent versions of OS X. The tools used to enable it for third party SSDs do not add a new kernel extension; they change the setting to allow Apple's native TRIM implementation to be used with SSDs other than those factory installed by Apple.
This shows that the 840s do work slightly better with TRIM than without, but the differences are (in my opinion) trivial, a 9% increase at best.
One of the major reasons for the skepticism that exists about TRIM is that so many people, the authors of both articles you linked to included, don't understand it.
TRIM is not, strictly speaking, a performance-enhancement technology -- though it is plainly obvious that most people think it is.
Though it can, in many circumstances, improve performance, there are also circumstances under which it will provide little or no noticeable benefit. Not coincidentally, a new SSD tested fresh out of the factory packaging is unlikely to show much (if any) benefit. Or rather, TRIM is providing a real benefit for new SSDs, but that benefit doesn't become measurable in terms of benchmark performance testing until every memory cell in the SSD -- including many gigabytes of cells hidden from visibility by the SSD controller -- have been written to at least once. Writing 128 GB of files to an SSD with a nominal capacity of 128 GB won't do it, as there are several gigabytes (exact number varies depending on the model) still unwritten.
Under real-world use conditions, having TRIM disabled means eventually having noticeable write performance degradation due to write amplification. It is far greater than "9%" -- it can be a 50% or greater drop in write performance, depending on various factors. Defining "eventually" is difficult because it depends on how the SSD is used. But given enough time and write cycles, it can happen to all SSDs used without TRIM, no matter how sophisticated their garbage collection algorithms are.
Under those same real-world use conditions, having TRIM enabled means that the SSD should almost never reach a state of having noticeable write performance degradation, as it should almost never get into a state where write amplification is happening.
I will concede that it is possible to design a lab test in such a way as to defeat the benefits provided by TRIM, but such tests do not reflect any real-world usage scenario I can imagine. Furthermore, those same contrived tests would put an un-TRIMmed drive into an equally-addled state even more quickly.
I would suggest reading through the rather lengthy previous discussions about TRIM. Here are a couple of my past posts that are most relevant to the current discussion:
A description of what TRIM is here.
I addressed some of OWC Larry's comments about TRIM use with OWC/SandForce SSDs here.
http://www.macintouch.com/readerreports/harddrives/index.html#d09dec2013

Disabling Fusion Drive and Installing Windows on SSD of Late 2012 iMac

Hi, everyone. After a two-year wait, I'm ready to buy my first iMac (was waiting for USB 3.0). Before I get into my questions, I'll give you an overview of where I'm coming from so we can keep the discussion focused.
My Usage
I'm buying an Apple computer because it is the best-looking, quietist, and most powerful all-in-one computer I can find right now, but Windows is still my preferred operating system. I've used OS X before – it looks great and I'm sure it works great for a large number of people, but it's not for me. Windows works well and efficiently for me and I have thousands of dollars of design software for Windows. I'm not interested in a virtualization solution because of my performance needs. However, I do want to keep the OS X installation, if possible, for website testing and to play around with to learn the operating system better.
What I Want
I was attempting to buy the Late 2012 iMac last weekend, but it appears the BootCamp specifications and the Fusion Drive are currently limiting my usage needs. I'm configuring the top model iMac with the i7-3770 processor, 24GB RAM (8 default + 16 from Crucial), GTX 680MX, and the 3TB Fusion Drive. I don't actually want to use the Fusion Drive, though. I want Windows 7 64-bit and OS X 10.8 installed on the 128GB SSD and to use the 3TB hard drive as storage for my music, videos, photos, and documents.
My Questions
1. I've found a bunch of posts regarding installing Windows on the Fusion Drive, but they all seem to be about putting Windows on the slower 3TB hard drive portion and/or about trying to keep the Fusion setup after installing Windows. Does anyone have a walk-through for a new Mac user on how to break the Fusion Drive configuration and install Windows 7 and preferably OS X on just the SSD?
2. I've seen a bunch of posts debating about whether Windows can be installed natively using EFI to bypass the BootCamp limitations. Is this possible? The 21.5" version is running EFI version 2.0, so I can only assume the 27" would too, but it's not been added on the Apple website yet (http://support.apple.com/kb/HT1237). From what I understand, Windows requires at least version 2.0 to run in EFI mode. Also, if I am able to get this method to work, will I still be able to install the Windows drivers from the OS X installation USB (or do they even come with USB drives anymore?)?
3. If I have to use BootCamp, I assume I will have to split the 3TB drive into 1TB and 2TB partitions for BootCamp to see it (so Windows can see it). So I'd have Windows 7 and OS X on the SSD, and two storage partitions on the 3TB HDD that would show up as two drives for my files that both operating systems could access. Is this assumption correct?
4. I've seen posts about OS X automatically trying to rebuild the Fusion Drive. Let's say I'm able to get Windows installed on the SSD. Will OS X, or future updates to it, ruin my Windows installation? I would hate to do all this work and then have an Apple update corrupt everything.
I know this is a long post, but I don't want to spend over $3,000 until I can be sure I can make it work for me. Thanks to anyone who can help!
iMac, Windows 7

First, an advice: Boot Camp isn't compatible with 3 TB hard disks and Fusion Drive. For 3 TB hard disks, there's a workaround, but it doesn't work on a 3 TB Fusion Drive, so you won't be able to install Windows until Apple fixes this, so my advice is to wait until Apple launches OS X 10.8.3 or buy the iMac with a 1 or 2 TB hard disk and an external disk.
1. The SSD is used automatically by OS X to store the applications and data you most use, but Windows can't use it, and there's no workaround for this.
2. You can try to install Windows 8 in EFI mode, but I don't guarantee that it works. I tried it on my iMac and I started getting BSODs after some startups. Also, Macs don't use UEFI 2.0 (Macs use EFI 1.x), so you can't use Windows 8 advanced features such as Secure Boot. For Windows 7, you can't install it in EFI mode (it requires UEFI 2.0 or later)
3. Fusion Drive only allows you to have two volumes, and with Boot Camp, you can only have two volumes on your computer: one for OS X and the other one for Windows. That's because Boot Camp emulates a BIOS to make Windows run (although it isn't neccesary in Windows 8, if Apple would want).
4. First, you can't install Windows on the SSD. Then, OS X shouldn't ruin Windows because each operating system have got its space

3TB fusion drive and bootcamp

Hi everyone, I know there have be multiple posts on this, however I have a late 2013 iMac with OS X 10.9. I know Apple states support for bootcamp with a 3TB fusion drive from 10.8.3 fowards, however I wish to install Windows 8.1 pro from a full DVD using an external disk drive. All is good for partitioning and then when the mac reboots, it shows an apple (usual boot screen) and the a while after, it shows a "cannot do" sign that looks like (\).
Can anyone please tell me what I have done wrong or how to prevent this?
Thanks

Hi Chris:
I am afraid I can't help you, but I hope you can help me. I have been trying to install Win 7 using Boot camp assistant on my new iMac 27 (OS X 10.9) 1 TB HD and I haven't been able to get past the formatting. After 15 hours I still have a white screen, no Apple logo, or any indication that anything is running.
How long did it take you to format your 3 TB drive and what screen did you see when it was formatting? Did you also get a blank white screen?
Thanks.

Imac 27 3.4GHz Quad-core Intel Core i7,with 1TB Fusion Drive and logic

hi all, i just upgraded my old imac and now im going to have the 27 inch 3.4GHz Quad-core Intel Core i7,with 1TB Fusion Drive
how will logic is going to work? is it much better than my old i3 21.5 imac? i didnt like to work with my old imac, was very laggy.
thanks
Arad.

Anything purchased after mid-July has EFI (like BIOS in PCs) that only likes Lion. Maybe some up through mid-August could possibly run SL, but anyhing sold last week is Lion-only.
A very lucky few accidentally receive a SL-system when they buy new, but very few.

Can I configure Mac Mini with Fusion drive AND a secondary internal 1tb HD?

I am about to order an new Mac Mini, and would like to have the speed of the new fusion drive, but would also like to have the option of adding a secondary internal 1TB hard drive.
I know I can add an external HD, but I really like the increased speed, and access times of an internal HD.
Secondly, since I am about to make this purchase, I am curious if there is any word on the street about any dramatic upgrades or changes to the Mini due to come out at the June conference, or in the fall?
Thanks for the input.
Mark

The only clue you really have about possible upgrades, is to look at the product cycle in the past.
The average product cycle for the Mac Mini is 381 days, the last upgrade was 209 days ago, so it's not very likely we'll see a major update in june.
you can look at product cycles of mac mini (and apple products in general) on this page:
http://buyersguide.macrumors.com/#Mac_Mini
keep in mind this is a website based on rumors, only Apple knows.

Fusion drive and mac mini overall

greetings, i'm thinking about getting a mac mini to augment my macbook pro. essentially i'm thinking of pulling my itunes, etc off my MBP to the mini. does anyone have experience or feedback on the fusion drive. i'm not sure i need it, but sometimes building it out with features gives me a longer runway with the machine. any other feedback on the mini? i currently have a 27" thunderbolt monitor that i use with my MBP. regards...

Hi, I've read glowing reports on the new Minis, drawbacks are mostly HDMI issues, but a few even via TB to even Apple's Monitors. if you can wait maybe 3 months to see if Apple offers something other than HD4000 for graphics, I'd do that.
PS. Disappointed in Apple more every day.

DIY MAC Fusion Drive

I'd like to create my own MAC Fusion Drive, but I'm not a dev so I need a little bit of guidance, which would also help a lot of people I'm guessing.
I am trying to follow jollyjinx's instructions, which are not that detailed. Specifically, I am trying to find the names of my two drives and I can only find one. Maybe the drives are not connected in a way to do this I'm not sure. I have a 750GB HDD and an 80GB SSD installed internally in my 2011 Mac Mini. I have been using both drives, SSD for the OS and a handful of common files and the HDD for iPhoto and iTunes libraries. A Fusion drive would be perfect!
When I run dmesg in Terminal, here is what I get:
-bash-3.2# dmesg
PMAP: PCID enabled
Darwin Kernel Version 12.1.0: Tue Aug 14 13:29:55 PDT 2012; root:xnu-2050.9.2~1/RELEASE_X86_64
vm_page_bootstrap: 2003271 free pages and 77497 wired pages
kext submap [0xffffff7f8073e000 - 0xffffff8000000000], kernel text [0xffffff8000200000 - 0xffffff800073e000]
zone leak detection enabled
standard timeslicing quantum is 10000 us
standard background quantum is 2500 us
mig_table_max_displ = 74
TSC Deadline Timer supported and enabled
corecrypto kext started!
Running kernel space in FIPS MODE
Plist hmac value is    735d392b68241ef173d81097b1c8ce9ba283521626d1c973ac376838c466757d
Computed hmac value is 735d392b68241ef173d81097b1c8ce9ba283521626d1c973ac376838c466757d
corecrypto.kext FIPS integrity POST test passed!
corecrypto.kext FIPS AES CBC POST test passed!
corecrypto.kext FIPS TDES CBC POST test passed!
corecrypto.kext FIPS AES ECB AESNI POST test passed!
corecrypto.kext FIPS AES XTS AESNI POST test passed!
corecrypto.kext FIPS SHA POST test passed!
corecrypto.kext FIPS HMAC POST test passed!
corecrypto.kext FIPS ECDSA POST test passed!
corecrypto.kext FIPS DRBG POST test passed!
corecrypto.kext FIPS POST passed!
AppleACPICPU: ProcessorId=1 LocalApicId=0 Enabled
AppleACPICPU: ProcessorId=2 LocalApicId=2 Enabled
AppleACPICPU: ProcessorId=3 LocalApicId=1 Enabled
AppleACPICPU: ProcessorId=4 LocalApicId=3 Enabled
AppleACPICPU: ProcessorId=5 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=6 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=7 LocalApicId=255 Disabled
AppleACPICPU: ProcessorId=8 LocalApicId=255 Disabled
calling mpo_policy_init for TMSafetyNet
Security policy loaded: Safety net for Time Machine (TMSafetyNet)
calling mpo_policy_init for Sandbox
Security policy loaded: Seatbelt sandbox policy (Sandbox)
calling mpo_policy_init for Quarantine
Security policy loaded: Quarantine policy (Quarantine)
Copyright (c) 1982, 1986, 1989, 1991, 1993
          The Regents of the University of California. All rights reserved.
MAC Framework successfully initialized
using 16384 buffer headers and 10240 cluster IO buffer headers
IOAPIC: Version 0x20 Vectors 64:87
ACPI: System State [S0 S3 S4 S5] (S3)
PFM64 (36 cpu) 0xf10000000, 0xf0000000
[ PCI configuration begin ]
AppleIntelCPUPowerManagement: Turbo Ratios 0057
AppleIntelCPUPowerManagement: (built 13:47:00 Aug 14 2012) initialization complete
console relocated to 0xf60010000
PCI configuration changed (bridge=16 device=5 cardbus=0)
[ PCI configuration end, bridges 13 devices 18 ]
mbinit: done [96 MB total pool size, (64/32) split]
Pthread support ABORTS when sync kernel primitives misused
rooting via boot-uuid from /chosen: 7B269773-B97B-335A-A4EF-A3D6956395BA
Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
com.apple.AppleFSCompressionTypeZlib kmod start
com.apple.AppleFSCompressionTypeDataless kmod start
com.apple.AppleFSCompressionTypeZlib load succeeded
com.apple.AppleFSCompressionTypeDataless load succeeded
AppleIntelCPUPowerManagementClient: ready
BTCOEXIST off
BRCM tunables:
pullmode[1] txringsize[ 256] reapmin[   32] reapcount[ 128]
highWaterMark: VO[ 192] VI[ 192] BE[ 192] BK[ 192]
FireWire (OHCI) TI ID 823f built-in now active, GUID c82a14fffeeaff8c; max speed s800.
USBMSC Identifier (non-unique): 1690A44191FF 0x59b 0x370 0x0
USBMSC Identifier (non-unique): AA19164300000896 0x3f0 0xb107 0x8192
Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/EHC1@1D,7/AppleUSBEHCI/U SB FLASH DRIVE@fd133000/IOUSBInterface@0/IOUSBMassStorageClass/IOSCSIPeripheralDeviceNub /IOSCSIPeripheralDeviceType00/IOBlockStorageServices/IOBlockStorageDriver/hp USB Flash Drive Media/IOGUIDPartitionScheme/OS X MOUTNAIN LION INSTALL@2
BSD root: disk4s2, major 1, minor 15
imageboot_setup_new: root image url is file:///BaseSystem.dmg
IOHDIXController: NOTE: administrator is creating non-ejectable disk image
KDIFileBackingStore::_handleStart: initial R/W vn_open returned 30
imageboot_mount_image: root device 0x1000011
HFS: Low Disk: Vol: Mac OS X Base System freeblks: 30158, warninglimit: 30790
Kernel is LP64
ioqueue_depth = 64,   ioscale = 2
Previous Shutdown Cause: 0
[BroadcomBluetoothHCIControllerUSBTransport][start] -- completed
DSMOS has arrived
[IOBluetoothHCIController][staticBluetoothHCIControllerTransportShowsUp] -- Received Bluetooth Controller register service notification
[IOBluetoothHCIController][start] -- completed
BCM5701Enet: Ethernet address c8:2a:14:59:28:c5
AirPort_Brcm4331: Ethernet address 28:cf:da:01:31:fd
IO80211Controller::dataLinkLayerAttachComplete(): adding AppleEFINVRAM notification
IO80211Interface::efiNVRAMPublished():
[IOBluetoothHCIController::setConfigState] calling registerService
AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
en1::IO80211Interface::postMessage bssid changed
en1: 802.11d country code set to 'US'.
en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165
MacAuthEvent en1   Auth result for: 00:23:6c:bf:ae:20 MAC AUTH succeeded
wlEvent: en1 en1 Link UP virtIf = 0
AirPort: Link Up on en1
en1: BSSID changed to 00:23:6c:bf:ae:20
en1::IO80211Interface::postMessage bssid changed
AirPort: RSN handshake complete on en1
[ffffff8018e64c00][BNBTrackpadDevice::init][75.15] init is complete
[ffffff8018e64c00][BNBTrackpadDevice::handleStart][75.15] returning 1
[ffffff8019e85800][AppleMultitouchHIDEventDriver::start] entered
[ffffff8018da6c00][AppleMultitouchDevice::start] entered
MacAuthEvent en1   Auth result for: 00:23:6c:bf:ae:20 MAC AUTH succeeded
MacAuthEvent en1   Auth result for: 00:23:6c:bf:ae:20 Unsolicited Auth
wlEvent: en1 en1 Link UP virtIf = 0
AirPort: RSN handshake complete on en1
wl0: Roamed or switched channel, reason #4, bssid 00:23:6c:bf:ae:20
en1: BSSID changed to 00:23:6c:bf:ae:20
en1::IO80211Interface::postMessage bssid changed
-bash-3.2#
I can only find one reference to a drive in the data, but maybe I'm missing something. Any help would be greatly appreciated!

So far, so good! The article steps worked perfectly. I setup the Fusion Drive and then restored from my Time Machine Backup (from the SSD). I then moved the files over that were on the HDD (which I also backed up on my external drive. Everything seems to be working great! The volume was previously named 80 SSD OS X (to differentiate from the HDD) and it is still named that, although, as you can see from the screenshot, it now has a 576GB capacity (not 750GB, which is what I thought I put in there--my memory is horrendous! lol) ....not a big deal. I consider this a huge success at this point. Thanks again for the article!

Creating a Fusion Drive ?

Hi All,
I have a mid-2011 iMac which I plan to install a Samsung 840 Pro SSD to use as part of a Fusion Drive setup.
Typically I backup using Carbon Copy and wil be taking a backup prior to the mod.
Once the drive has been configured...... will I need to reinstall the OSX from scratch, or is it just a matter of bringing back the Backup ??
Pete

When you use CoreStorage to format the SSD and mechanical HD it will be a destructive format/paritioning so the new Fusion disk will look like one HD but in fact will be two under the hood. You should be able to use CC to restore your image as it will look like a single drive.
I'm not sure if that model iMac has a Fusion tool supplied by Apple or not. I think you have to use one of the many guides found online to manually configure the drives to be a single Fusion drive using diskutil at the command line. If I remember correctly, you'll need to boot with a thumb drive with 10.8.3 installation on it. Then go to the Terminal to configure the Fusion drive setup. Then you would have to find some way to run CC from a bootable thumbdrive, etc. I think you could boot the backup disk made with CC then run CC from it to clone to the new Fusion drive. That should work. Worse case scenario, you always could just re-install OS X on the Fusion drive and then use the Apple Migration Assistant to grab your data from the CC'd drive.
Either way, give yourself at least half a day in the event you run into issues and have to work around things.

DIY Fusion drive with elgato, eyetv 3

I've got the imac 27" 2011, and I have set up a fusion drive and generally I have no issues with it.
However when watching TV (a waste of an imac i know) with elgato eyetv, it pauses every so often. Generally if you listen during this its because the main drive as reving up as its gone to sleep, I know in the system preferences I can tell it not to spin down, but that will cause the drive to eventually fail.
My questions are really to those who have a fusion drive (from the apple directly as a preinstalled build) if anyone else is running the elgato eyeTV 3 and experience anything similar?
Or to everyone else can the Fusion drive be altered so that the live TV stream gets written to the main Hard drive rather than to the SSD?
Any thoughts?

The drive will fail no matter what you do with it. That is the fact of hard drives and drives in general.
So stop putting it to sleep and stop the waiting.
No it can't be altered as that is what a Fusion drive is. The System determines what data gets written to each drive not the user. If you want to make that choice then you should not be using a Fusion drive setup.
Also with ANY Fusion drive When, Not If, Either drive Fails they both fail and you are left with Nothing. Kind of like RAID 0 (Zero).
I personally would never use a Fusion drive setup. Better to have a slightly bigger SSD and a secondary spinning drive to store data on. Like moving your "i" tunes, photo and other User/library files, Doc and Downloads, to the spinner and leaving the SSD for the OS and programs.

Fusion Drive and sleepimage

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