Copy one SSD content to another?

[kbzium]

Hello,

I'm getting another SSD drive. The thing is I'd like to use the new SSD instead of the old one, which I am using now. There are 2 partitions: windows one and gentoo another. Is there a way to move things smoothly so I'm not going to need anything else? Like dd or something? Wouldn't it harm my SSD drives?

Thank you!

[drescherjm]

I have used dd for that. It works fine.

[Hu]

Although dd may be safe for modern SSDs, using dd to copy filesystems for general use has never been best practice, because it copies all the free space. Make a partition table and filesystems on the new drive, then copy the files over via the filesystem interface, rather than the block interface.

[kbzium]

The problem is, that my Vertex 4 appears to have:

Erase block size of 2MB
Page size of 8KB


I know that when erase block is 512KB, best values would be 32,32 and stride=128,stripe-width=128, the latter are computed as erase block size / stripe-width (is it a page size?)


Assuming I'm using fdisk, what number of heads, sectors and stride, stripe-width should I use?

Would:
fdisk -S64 -S63
mkfs -t ext4 -b 4096 -E stride=256, stripe-width=256 be ok?

[kbzium]

Okay, I've ended up doing:

128,32, 512,512 (cyl, str, stipe, stripe-width) with normal 4kb BS. Partition is positioned at the second 2-megabyte block that is 4096 from a sector perspective (2 times more, cause fdisk usses 512 block). Hope it helps someone