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Thread ID: 129647 2013-03-04 21:05:00 just being careful JJJJJ (528) Press F1
Post ID Timestamp Content User
1331183 2013-03-04 21:05:00 I have 2 SSD disks running in RAID 0.
Can I defrag them without losing everything?

I know you shouldn't defrag ssd's
JJJJJ (528)
1331184 2013-03-04 21:44:00 Yes you can but no you shouldn't. Why would you want to ?

I'm thinking of getting a 2nd one and raiding them also, just because it's cheaper than getting a bigger one. I was wondering about trim support using RAID myself.
What I do is have a convential hard disk dedicated to backups and windows scheduled to backup the SSD once a week, makes me feel safe even if I have never used the backup.
dugimodo (138)
1331185 2013-03-05 01:19:00 Nope, never defrag a SSD. Chilling_Silence (9)
1331186 2013-03-05 01:58:00 DO NOT defrag an SSD period, all you are doing is accelerating the wear which will decrease performance, the only way I know to increase the performance is to image the logical drive, then erase and re-image down....

If disk performance really is a big issue for you, their are a couple of options.....buy more RAM and create a RAM Drive, or purchase a PCIe Expansion Card with RAM on it...
SolMiester (139)
1331187 2013-03-05 02:15:00 Buy a hard drive and then defragment it, instead. Agent_24 (57)
1331188 2013-03-05 02:18:00 I have been useing ssd's ever since they became available. I have always defraged them every three or so months. My computer always seems to run faster after the defrag. May just be my imagination, but they have never caused any problems or damage.
I notice the warning that says MAY cause this or that. I believe the warning is to protect the manufacturer.
In my case I'm more concermed with upsetting the RAID.
JJJJJ (528)
1331189 2013-03-05 02:20:00 "Being careful" doesn't usually exist in the same neighborhood as "RAID 0"

Personally I avoid RAID0, because you're doubling the chance of a disk failure destroying all your data.

The exception is temporary files, browser caches, memory page files, or other non-production temporary files that are always rebuilt on restart. ("TempDB" for SQL server).

Still to each his own.
kingdragonfly (309)
1331190 2013-03-05 02:21:00 Yup, definitely just your imagination.

Defragging orders the files sequentially, and together, on a drive. Fragmentation occurs when one single file is stored in dozens of places all around the HDD. The "slow down" is the seek times as the head physically moves across the drive to the different locations.

SSDs are flash-based, they're like a thumb-drive, you don't defrag them. It's a genuine warning, there's no need to do it, and there's definitely no performance increase.
Chilling_Silence (9)
1331191 2013-03-05 02:29:00 I'm not concerned with backups.
The only reason I use RAID 0 is to boost r/w speed. It doubles their speed. I am told it will double again if a third disk is added.
JJJJJ (528)
1331192 2013-03-05 03:24:00 Personally I avoid RAID0, because you're doubling the chance of a disk failure destroying all your data.

Exactly. It's a little known fact* that RAID arrays are named after the number of disks they protect in a failure ;)

*disclaimer: may not be fact
pcuser42 (130)
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