[Novalug] Intel X-25M SSD with Jaunty on Lenovo T61
lug-user at drmikehenry.com
Tue May 26 06:57:50 EDT 2009
(Note: Resending, as the message hasn't appeared for twelve hours.)
On Sun, May 24, 2009 at 11:53 AM, Ken Kauffman <kkauffman at headfog.com>
> The Intel chipset on the T61 laptop will not allow the SSD drive to
> at full capacity. You're better off sticking with a 7200 RPM laptop
> its for performance reasons. Do a search on Intel chipset and SSD and you
> should find some articles on this.
Thanks for the pointer. I was able to locate a couple of articles
explaining the 1.5 Gbps limitation of the T61. For example:
It looks like the notebook's SATA interface limits the SSD's transfer
rate to about 115 MB/sec, compared with over 200 MB/sec on his desktop.
But as some of the people commenting on the article point out, the SSD's
biggest advantages are the low access time (0.1 ms compared to 6-7 ms
for hard drives) and great random read and write performance. Some
suggest that the real-world difference in transfer rate won't be
noticeable. But I agree that it's unfortunate to have the expensive SSD
running below its potential.
Pete Nuwayser wrote:
> I'm waiting on getting an SSD until two things happen:
> 1. The prices come down, and
> 2. There is a supported file system that is designed to work with such
The price is certainly up there. As for the filesystem, there doesn't
appear to be anything optimized for SSDs yet. Existing filesystems
would have a tendency to wear out the SSD faster than the future
filesystems under development. I'm reading different opinions on that.
Some suggest the wear-out factor is not important, as it would take
nearly continuous writing to wear out the device in several years, and
by that time you'll want a new drive anyway. There are also some
suggestions for reducing the amount of data written to the drive (e.g.,
using noatime for the mount).
But maybe SSDs are still just a bit too new and costly. The 320 GB hard
drive is cheaper than I'd remembered (down to $80 at Newegg - I'd
thought it was closer to $200). So perhaps it's better buy another 320
GB hard drive for my wife's notebook and wait a while longer...
Thanks for the insights,
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