Linked by Thom Holwerda on Wed 31st Oct 2012 12:57 UTC
Mac OS X "Since Apple has announced the Fusion drive, people have wondered if it's possible to use the fusion drive on older machines with a SSD and HDD." Fun with Core Storage (via John Siracusa).
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"Fun"
by Bill Shooter of Bul on Wed 31st Oct 2012 16:39 UTC
Bill Shooter of Bul
Member since:
2006-07-14

Note to the non-nerds: Our version of fun usually does include the increased potential for chaos, corruption, and the occasional explosion. Things that are very cool technology are not always the same as really reliable rock solid technology that should be used. This is one of those.

Reply Score: 5

RE: "Fun"
by kjmph on Wed 31st Oct 2012 16:55 UTC in reply to ""Fun" "
kjmph Member since:
2009-07-17

Why? This is a shipping feature that is present on new hardware available today. The HW isn't present in older models, but the SW is. If say, you were like me, and broke warranty and installed these drives anyways, then setting up a logical volume would be the exact same as using the new Fusion Drives. Remember, Apple isn't using a special hybrid drive, they are only using logical volume management and handing data transfer in SW.

Reply Score: 2

RE[2]: "Fun"
by Bill Shooter of Bul on Wed 31st Oct 2012 19:23 UTC in reply to "RE: "Fun" "
Bill Shooter of Bul Member since:
2006-07-14

https://twitter.com/siracusa/status/263663394975002625


Fusion drives in general aren't a good idea. If it were completely bug free it would have the same reliability as a completely bug free raid 0 config. .

http://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_0_failure_ra...

Reply Score: 1

RE[3]: "Fun"
by kjmph on Wed 31st Oct 2012 19:49 UTC in reply to "RE[2]: "Fun" "
kjmph Member since:
2009-07-17

Oh pardon, you are stating that the reliability is bad for an installation like the Fusion Drive, period. Not that the SW is prone to chaos when you yourself setup a Fusion Drive using the instructions in the linked article. I apologize!

Reply Score: 2

RE[2]: "Fun"
by d3vi1 on Thu 1st Nov 2012 14:48 UTC in reply to "RE: "Fun" "
d3vi1 Member since:
2006-01-28

Why? This is a shipping feature that is present on new hardware available today. The HW isn't present in older models, but the SW is. If say, you were like me, and broke warranty and installed these drives anyways, then setting up a logical volume would be the exact same as using the new Fusion Drives. Remember, Apple isn't using a special hybrid drive, they are only using logical volume management and handing data transfer in SW.

Actually, replacing the RAM, hard-drive and optical drive don't void warranty in most Macs.

Reply Score: 2

RE[3]: "Fun"
by kjmph on Fri 2nd Nov 2012 02:43 UTC in reply to "RE[2]: "Fun" "
kjmph Member since:
2009-07-17

Even if you are doing this?

http://www.macrumors.com/2011/08/01/installing-a-second-hard-drive-...

Hence the ability to setup a Fusion Drive myself..

Reply Score: 1

HFS fail
by jido on Wed 31st Oct 2012 18:53 UTC
jido
Member since:
2006-03-06

I am not sure what the author is demonstrating in the link at the end of the article. So he doesn't use HFS+ because corrupting a formatted disk image is not detected by Disk Utility but is detected by fsck?

I am not seriously worried about data on my disk.

On the other hand the trick he showed with the Fusion drive is quite exciting ;)

Reply Score: 2

RE: HFS fail
by quackalist on Thu 1st Nov 2012 02:30 UTC in reply to "HFS fail"
quackalist Member since:
2007-08-27

I have some worries about the data on your disk, your HFS+ data will be in my prayers every night.

Reply Score: 5

RE[2]: HFS fail
by redshift on Fri 2nd Nov 2012 01:37 UTC in reply to "RE: HFS fail"
redshift Member since:
2006-05-06

I have some worries about the data on your disk, your HFS+ data will be in my prayers every night.


I like the way Apple uses its file system.... but in doing so the filesystem itself has been stretched well beyond what anyone imagined it would be. Tacking on lots of nice modern features has kept it limping along, but it really should be redone from the ground up with something modern and solid.

I was hoping for ZFS to become their default, but it is not going to happen beyond the support they have now. They also hired the author of BeOS's filesystem an few years ago, and I thought they would have him create something nice for them... but so far HFS+ is all we get.

At this point NTFS with their custom meta data applied would be an improvement over what they have.

Reply Score: 1

Anybody Try this out
by tarpit on Fri 2nd Nov 2012 02:00 UTC
tarpit
Member since:
2006-10-16

Has anybody tried this out yet?
I have a macbook with a 90gb SSD and 500gb WD Black Ed. hard drive in the media bay.

Current I run the OS from the SSD and all of my media is linked to the /Users/<User profile> on the SSD.

From the blog post, the volume creation would have to happen while booted off the installation media, if you want to install onto the fusion drive.

Reply Score: 1