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How do I know if my SSD Drive supports TRIM?

How do I know if my SSD Drive supports TRIM?

Windows 7 has support for the TRIM command which should help ensure that the performance of an SSD drive remains good through it's life.

Asked by: Guest | Views: 286
Total answers/comments: 2
bert [Entry]

"An answer to this question was published in the comments section on the Engineering 7 blog post about SSD and Windows 7.

To find out if Windows 7 is sending the TRIM command you can run the following command from an elevated prompt:

>fsutil behavior query DisableDeleteNotify

and how to interpret this based on a comment.

""...if fsutil reports that
""DisableDeleteNotify"" is 0, then Trim
is enabled. (The feature is sometimes
referred to using different names:
Trim == Delete Notification == Unused
Clusters Hint.) The setting is
written in terms of disabling
something because we like to use
values of 0 for defaults.

Have Trim enabled according to this
setting, which you do, means that the
filesystem will send Trim commands
down the storage stack. The
filesystem doesn't actually know
whether this command will be supported
or not at a lower level. When the
disk driver receives the command, it
will either act on it or ignore it.
If you know for sure that your storage
devices don't support Trim, you could
go ahead and disable Trim (enable
DisableDeleteNotify) so the filesystem
won't bother to send down these
notifications. However sending down
the notifications is pretty
lightweight and I haven't seen any
performance improvement by disabling
them, so I don't recommend disabling
this setting. If you have an SSD
which does support Trim, then you
definitely don't want to disable it,
because there are some performance
gains to be had for leaving the
setting in its default form.""

It seems that this still won't tell you if the drive and or firmware for the drive supports TRIM. Sigh."
bert [Entry]

The easiest way to know if your SSD supports TRIM is to use CrystalDiskInfo.