95 risposte a questa discussione

[Killer application]

crapple poteva fare che la cartella del SO e dei programmi venisse indirizzata sull'ssd (e se finito sull'hdd) e tutti gli altri file sull'hdd meccanico...

[ally]

crapple poteva fare che la cartella del SO e dei programmi venisse indirizzata sull'ssd (e se finito sull'hdd) e tutti gli altri file sull'hdd meccanico...

...e invece ha scelto la via ibrida...se devi importare un grosso progetto stile adobe su mela e sull'ssd non c'è spazio dovrai supparti la lentezza dell'hard disk meccanico e non ne verrai fuori fino a che il so non deciderà di spostare sufficienti file "non usati" per fare spazio al tuo progettone che nel mentre sarà aumentato drasticamente di misura visto che ci stai lavorando...in sinto : quando sfori la capienza dell'ssd sei fottuto...

[willy_revenge]

devo dire che io non la utilizzerei, sono intenzionato a prendere l'iMac nuovo 27 con sto coso e se si può disabilitare (e mi sembra di capire che si può) voglio tenermi le due unità separate, con il SO e i programmi che scelgo io sull'SSD e tutto il resto sul HD meccanico.

Per un n00b invece è una gran soluzione.

[ally]

crapple informa gli utenti sui limiti del Fusion Drive
crapple ha riportato una nota che riguarda alcune limitazioni del nuovo Fusion Drive, opzione di cui si potranno dotare gli iMac e i Mac MIni. La nuova tecnologia non permetterà di creare altre partizioni alle già esistenti sull'hard disk inoltre l'assistente di Boot Camp non supporta la configurazione a 3 TB. Tra le incompatibilità la più importante forse riguarda l'uso di Time MAchine: ci potrebbero essere dei problemi nel ripristino dei file salvati.

Frequently Asked Questions

Do I need to configure Fusion Drive?
When ordered with a Fusion Drive, your iMac or Mac mini is pre-configured.
Can external USB, FireWire, or Thunderbolt hard drives be added to Fusion Drive?
An external drive cannot be used as part of a Fusion Drive volume. Fusion Drive is designed to work with an internal hard disk drive and internal flash storage.

Can I add a partition to the hard disk with Fusion Drive?
Using Disk Utility, you can add one partition to the hard disk on Fusion Drive. Once you add the partition, the "plus" symbol in Disk Utility to add additional partitions will be grayed out. You cannot partition the Flash storage.

If I create a hard disk partition is it part of Fusion Drive?
The additional partition is not part of Fusion Drive. The new partition is a separate volume that is physically located on the hard disk drive.

Can I add a Windows partition?
You can create one additional partition on the hard disk with Fusion Drive. You can create either a Mac OS X partition or a Windows partition.
If creating a Windows partition, use Boot Camp Assistant to create it, not Disk Utility. From the Go menu, choose Utilities. Then, double-click Boot Camp Assistant and follow the onscreen instructions. For more information on Boot Camp see the Boot Camp support page.

Note: Boot Camp Assistant is not supported at this time on 3TB hard drive configurations.

I receive a "disk is too small for this operation" message when creating a partition. Why?
The partition you are trying to create has a larger size than free space available on the hard disk drive. Reduce the size of the partition you are trying to create and try again.

Can a Fusion Drive be mounted on another system in Target Disk Mode?
Yes, but the system attempting to mount the Fusion Drive in Target Disk Mode must have OS X Mountain Lion version 10.8.2 or later. A Fusion Drive will not appear as a Target Disk Mode volume or startup disk on earlier versions of Mac OS X.
Can third-party disk utilities be used with a Fusion Drive?
Third party disk utilities may or may not work with a Fusion Drive. Check with the third-party software vendor to check for compatibility with a Fusion Drive.

I'm using video capture software and it reports frame drops during sustained captures. What could be wrong?
Your project's capture requirements may exceed the sustained capture rate available to your Fusion Drive. Try capturing a smaller segment of the source or reduce its resolution.
I've recently reset NVRAM (Non-Volatile Random Access Memory, also known as PRAM) and now my Fusion Drive is starting up more slowly. How can I fix this?
The reset removed your Startup Disk setting from NVRAM. To access the setting, choose System Preferences from the crapple () menu. Then, click Startup Disk and then Macintosh HD. Note: You may have to click the lock icon at the bottom of the window and enter your system administrator password to manage this setting.

http://support.apple...US&locale=en_US

[ally]

I'm using video capture software and it reports frame drops during sustained captures. What could be wrong?
Your project's capture requirements may exceed the sustained capture rate available to your Fusion Drive. Try capturing a smaller segment of the source or reduce its resolution.

...ecco la parte bella : avere un ssd e non poterlo usare...

[ally]

There may be issues with the sustained data capture rates with Fusion Drive. Here's an item from the FAQ:

I'm using video capture software and it reports frame drops during sustained captures. What could be wrong?
Your project's capture requirements may exceed the sustained capture rate available to your Fusion Drive. Try capturing a smaller segment of the source or reduce its resolution.

In an interesting Betalogue blog post, Canadian IT consultant and author Pierre Igot pointed to another item in the tech note, where crapple offers a series of steps to take if the Fusion Drive system doesn't start up and you see the flashing question mark or another alert. But as we read, the end result isn't reassuring or entirely satisfying:

To repair the volume, click Fix. CAUTION: Clicking Fix will erase your Fusion Drive.

Igot suggests that the flashing question mark is rare occurrence nowadays, but a sign of serious disk damage. He worries "that the flashing question mark problem might occur more frequently with the Fusion Drive than with current drives, but that it’s not indicative of a hardware failure and can actually be fixed."

Maybe I’m reading too much into this. Maybe crapple is just being cautious and making sure that the required information is available in the rare cases when such a failure might occur. On the other hand, crapple is a company that tends to remain in denial about problems until reports reach some kind of internal critical mass. So this particular tech note looks rather unusual to me. After all, nobody except crapple people with access to prototypes is using a Fusion Drive right now.

It's too soon to understand the Fusion Drive's advantages and potential issues in professional workflows. Mac managers should proceed with caution until more is known.

...usatelo...ma non per lavorarci seriamente...e attenti a recuperare i dati se qualcosa va storto...

http://www.zdnet.com...ogy-7000006477/

[G-DannY]

Porco dio che fail

[Thefrank0]

Quindi fusion drive:

1)Scrive tutto su SSD.
2)Quando finisce lo spazio su SSD lo svuota per 4GB sull'hard drive per avere una cache su cui salvare velocemente dati.
3)"Promuove" i files piu' usati (nell'articolo c'è scritto che bastano due letture complete) dall'HD all'SSD. Se l'SSD è pieno, sposta un quantitativo uguale di dati dall'SSD all'HD una volta finita la scrittura. Perchè lo faccia non si sa visto che il tipo di ars non ha trovato alcun "registro".

Particularly, I'd like to see what mechanism it's using to determine which chunks are tiered down; it's metadata-based, but on what metadata? Where is the tiering information kept? It moves 128KB chunks, but does that mean it's capable of actually tiering individual 128KB chunks based on need? We know that it works with chunks at least as small as 1MB, but what is the lower limit?

Essendo una soluzione ibrida se mi si rompe l'ssd o l'hd la prendo al culo

It's clear a loss of either the HDD or the SSD would spell disaster for the aggregated Core Storage volume that makes up Fusion Drive. The Recovery Partition, standard on Macs since OS X 10.7, is located on the HDD. This means that if the SSD is ever lost, you'd still at least be able to boot and run some basic diagnostics at the command line. crapple's own troubleshooting training has some more details, but most of the "repair" steps to fix a problematic Fusion Drive volume are destructive, requiring a rebuilding of the Core Storage volume.

crapple ha copiato pari pari la tecnologia intel SRT dimenticandosi che quest'ultima prevede una modalità enhanced nella quale gli stessi dati vengono scritti su hd ed ssd con i benefici in lettura di quest'ultimo, con il risultato che se si rompe l'ssd posso bootare il sistema e farmi gli affari miei come prima

http://www.anandtech...aching-review/5


IT JUST WERKS

Messaggio modificato da Thefrank0 il 07 novembre 2012 - 16:35

[ally]

My initial assessment of crapple's new Fusion Drive was positive, largely because it is the 1st hybrid drive with enough flash capacity to give users an SSD experience - but with much more capacity and at a much lower cost per GB.
But as more details emerged, I've changed my view. Fusion Drive will be good for casual users whose work does not involve processing dozens of GBs of data regularly.
But professionals in biotech, video, music, geophysical and other large data apps where availability is critical should avoid the Fusion Drive. Why?
Fusion confusion
FD is a combination of a hard drive with a 128GB SSD. The glue that holds them together is a special Mac driver that manages the movement of files between the SSD and the hard drive.
crapple's tech note says:
Fusion Drive automatically and dynamically moves frequently used files to Flash storage for quicker access, while infrequently used items move to the hard disk. As a result you'll enjoy shorter startup times, and as the system learns how you work you'll see faster application launches and quicker file access. Fusion Drive manages all this automatically in the background.
This model assumes a user who doesn't process a lot of files and whose files are small. Otherwise the bandwidth required to move files would choke the disk and the SSD capacity would be insufficient.
Users who process multi-gigabyte files regularly - musicians, video editors, scientists, artists - will find irritating starts and stops as the system is forced to move big chunks of data to accommodate new files. There is a better way.
How Seagate does hybrid
Seagate's Momentus XT hybrid algorithms take a different tack: they look for the most frequently used small files and keep them in the flash read cache. This works well because disks are good at retrieving large files, and choke on lots of small files.
Seagate marketing has been too conservative sizing the flash cache, so the SSD benefits aren't consistent for the target market. They are noticably faster, but too often revert back to standard disk performance for busy power users.
Data integrity

Fusion Drive is like Time Machine: a glitzy feature that power users turn off because it hurts performance.

But there's a better reason for power users to avoid the Fusion Drive: data integrity.
HFS+ is primitive 1980s file system tech. There's no background data scrubbing, checksums, or other modern data integrity features.
HFS+ assumes that writes gets written as intended and that whatever is read is what it intended - but due to many system-level issues that isn't a safe assumption. With FD your valuable files will get read and written a lot more - and face corruption every time.
The Storage Bits take
People who make a living on their Macs working with big files shouldn't risk letting HFS+ move their data around any more than they must. There will be corruption and you won't know it until it is too late. That makes FD a bad idea for pros.
Casual users will like it: it will make their Mac snappier and hide the creakiness of the aging Mach kernel. Consumers who don't have a lot of data - and most have no idea - will find themselves operating out of the SSD almost all the time and will love it.
And if they lose a file or 2? Hey, stuff happens. How often will they notice?
Comments welcome, of course. Lesson learned: act in haste, repent at leisure.

...ed emergono anche tutti i limiti dell'hfs+...

http://www.zdnet.com...are-7000006661/

[willy_revenge]

come ho già detto, è un ottima soluzione per il noob che usa itunes iphoto e safari. io lo disabiliterei, ma megusto al pensiero di un imac con ssd+1tbHD interni di fabbrica, senza stare ad aprirlo subito.

[ally]

...in sintesi :

Fusion Drive is like Time Machine: a glitzy feature that power users turn off because it hurts performance.

...mela è pro...

[elect]

non c'entra una minchia con le soluzioni ibride a, mentre mia madre succhia cazzi, oggi esistenti, deal with it.

Infatti io non l'ho associato alle soluzioni odierne...

[rgart]

...in sintesi :



...mela è pro...

Beh TM è fantastico...

Questo fusion non so... Ma mi sembra una stronzata...

[ally]

Beh TM è fantastico...

Questo fusion non so... Ma mi sembra una stronzata...

...a cosa serve time machine?...

[rgart]

Ad aver un backup incrementale e navigabile utilizzabile cme disaster recovery, usabile su qualsiasi Mac senza dover configurare alcuna cosa... Basta attaccare un hd esterno USB e alla richiesta di volerlo utilizzare come TM cliccare si.

Il tutto fatto con stile, integrato col sistema e soprattutto FUNZIONANTE.

Non come ripristino di sistema

[Jabberwock]

Ad aver un backup incrementale e navigabile utilizzabile cme disaster recovery, usabile su qualsiasi Mac senza dover configurare alcuna cosa... Basta attaccare un hd esterno USB e alla richiesta di volerlo utilizzare come TM cliccare si.

Il tutto fatto con stile, integrato col sistema e soprattutto FUNZIONANTE.

Non come ripristino di sistema

Ripristino di sistema mi ha giusto risparmiato ore di lavoro giusto una settimana fa... ma, ovviamente, non e' un backup (ne' dice di esserlo)! Anche Previous Version mi e' stato utile in passato... vediamo com'e' il nuovo Cronologia file (appena decido come fare per usarlo)!

[ally]

Ad aver un backup incrementale e navigabile utilizzabile cme disaster recovery, usabile su qualsiasi Mac senza dover configurare alcuna cosa... Basta attaccare un hd esterno USB e alla richiesta di volerlo utilizzare come TM cliccare si.

Il tutto fatto con stile, integrato col sistema e soprattutto FUNZIONANTE.

Non come ripristino di sistema

...ripristino di sistema non necessità di ulteriori dischi...

[willy_revenge]

...ripristino di sistema non necessità di ulteriori dischi...

Quindi?

[rgart]

Ripristino di sistema mi ha giusto risparmiato ore di lavoro giusto una settimana fa... ma, ovviamente, non e' un backup (ne' dice di esserlo)! Anche Previous Version mi e' stato utile in passato... vediamo com'e' il nuovo Cronologia file (appena decido come fare per usarlo)!

Anche a me ha salvato un paio di pc, ma il problema è che non so mai se farà tutto bene o metterà delle pezze che piano piano si lacerano...



Cronologia da quello che avevi detto nel 3D di W8 non fa disaster recovery...

...ripristino di sistema non necessità di ulteriori dischi...

Che obiezione sensata
Tu fai backup nello stesso disco di sistema

[ally]

Quindi?

...quindi è un programma di backup come mille altri spacciato as usual come oro colato...togli la grafica accattivante e fa le stesse cose di autover da 1,2MB...ripristino di configurazione di sistema ti toglie molto spesso dai casini anche su macchine che un disco di back up non possono averlo (leggi portatili)...