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dennisdcs
13-Jan-2015, 17:33
Can one be used without killing long term performance? I was also looking at using a RAID card and running 2 SSDs in RAID 1

malcolmlewis
13-Jan-2015, 17:52
On Tue 13 Jan 2015 04:34:02 PM CST, dennisdcs wrote:


Can one be used without killing long term performance? I was also
looking at using a RAID card and running 2 SSDs in RAID 1




Hi
Why not use SLE 12 instead? But yes, ssd's work fine with btrfs and
xfs. You could use ext4 but that's unsupported.

I have a SLED 11 SP3 system running a 60GB ssd with btrfs, ssd hours are
at 18012h and lifetime is still perfect (as in no degradation).

--
Cheers Malcolm °¿° LFCS, SUSE Knowledge Partner (Linux Counter #276890)
SUSE Linux Enterprise Desktop 12 GNOME 3.10.1 Kernel 3.12.28-4-default
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jmozdzen
13-Jan-2015, 18:13
Hi dennisdcs,

Can one be used without killing long term performance? I was also looking at using a RAID card and running 2 SSDs in RAID 1

you were probably thinking about TRIM support, which is AFAIK available with the kernel and tools provided with SLES11SP3. From https://www.suse.com/releasenotes/x86_64/SUSE-SLES/11-SP3/


4.2.1 Support for the btrfs File System # (https://www.suse.com/releasenotes/x86_64/SUSE-SLES/11-SP3/#id303159)


Btrfs is a copy-on-write (CoW) general purpose file system. Based on the CoW functionality, btrfs provides snapshoting. Beyond that data and metadata checksums improve the reliability of the file system. btrfs is highly scalable, but also supports online shrinking to adopt to real-life environments. On appropriate storage devices btrfs also supports the TRIM command.




When it comes to RAID cards, then you should check in advance if the card in question is handling those well, i.e. is providing enough throughput to really take advantage. OTOH, with only two disks, have you considered using Linux built-in mechanisms to create the RAID set? You maight even come out more portable and flexibile than with a RAID card...

Regards,
Jens