SSD support aligment discussion

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I am trying to understand if Acronis 2011 will properly restore an image that was backed up from a SSD. Their support page states this:

There are no special partition alignment mechanisms required to keep the partitions offset which is optimal for SSD drives. In other words when you restore an image to an SSD drive, it will get the default 63 sectors offset instead of 64kb (or a multiple of 64kb) offset recommended for SSD drives even if this offset was in place when the image had been created. This may result in a drop of performance on certain models of SSD drives after the restore;

So they first say there is no alignment mechanisms required to maintain the offset but then they say their software will foul up the alignment during a restore. Is that right?

Dom, 10/30/2011 - 12:10
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mvp

If you restore an image that was aligned, the disk will be aligned. If you are not sure whether your disk is aligned when you back up, it is better to restore manually each partition. That allows you to double check that the first partition will have an offset of 1MB, which will align the disk.

Check this thread.

http://forum.acronis.com/forum/26162

Lun, 10/31/2011 - 00:30
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I was maybe naive, but you may clarify something.

I thought that since I switched to a Macbook Air with a 256Gb SSD drive that I could image the entire disk, bit by bit.
Finally, it's just RAM cells containing a value and thought I could do a photocopy of the entire 256Gb so I could restore the exact image should my Macbook crash.

My Macbook is running a small partition for OS/X which I barely use, and a Win7 paritition created with bootcamp.
That's why I want to save the entire SSD content. So I can restore everything, both systems, signatures, "virtual" partitions, etc...
Why am I saying "virtual partition"? Again, RAM cells store values. I fully understand that for physical hard disks, partition formats may be different and impose constraints to imaging schemes. Finally, the info can be stored at different physical (geographical) locations on the disk, but this is not possible for SSD. You can't store data between two RAM cells.
In RAM, we should not have those constraints, they are not hardware but only software. The OS deal with values that are then interpreted into "partition format" no?

Now, since I don't find a product that does a perfect photocopy of the entire SSD without caring one minute about the content nature, searched the web and found this thread. I wasn't aware of SSD "alignment" and still have only a modest idea. Is that specific alignment something that could actually trick the imaging process?
Isn't there a way to ignore the nature of the RAM content and save it in a raw format, and restore it in a raw format? In that case, turning on the Macbook should see everything in place, all the partitions, the signatures, the MBR, etc...?

Thanks for any clarification.
Steve

Mer, 04/25/2012 - 11:24
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So they first say there is no alignment mechanisms required to maintain the offset but then they say their software will foul up the alignment during a restore. Is that right?

I read it as: "alignment mechanisms required", there are none in TI 2011

Sab, 04/28/2012 - 05:19