SSDs to the forefront

Following up my recent posts concerning SSD and flash based disks, there seems to be a growing understanding of the power of SSDs and also some confusion over the pricing and whether some are faster than others.  I’ve compiled a summary of some other posts and info:

Are some SSDs faster/better than others?  YES, it starts with the cell memory:  single-level cell (SLC) flash memory is better (and hence more expensive) than multi-level cell (MLC) flash memory. Then there are the other components that make up the SSD.  From some recent reviews/blogs Intel, Samsung, OCZ and RunCore seem to make some fast ones.

Check out this comprehensive AnandTech article and another recent article.  Both comprehensive and very detailed.

Last FM: Installed SSDs into a SunFire X4170 to massively increase their streaming customers served from around 300 for a 7200 rpm SATA disk to 7000 for a 64Gb X25-E Intel SSD.

ZFS super charging: L2ARC for random reads,
and the ZIL for writes. OpenSolaris 2009.06 and Solaris 10 U6 with ZFS have super capabilities
for very intelligent use of fast storage technology, especially when serving files. Thanks again to Brendan.
Correction: while some items for ZFS were added to Solaris 10 update 6, it was only in the delivery of ZFS version 13 that it was complete, these changes made it into Solaris 10 update 8.

Setting up a mirrored SSD OpenSolaris system:  A very comprehensive how to guide for migrating from an existing system.

Making the most of your SSD: Easy steps to set up SSD on OpenSolaris –  thanks Arnaud.

Future of Flash: How flash storage is a disruptive technology for
enterprises. Hal Stern, VP Global Systems Engineering @ Sun hosts this very
informative podcast.

Seeing the performance upgrades that others are getting out of flash makes me want to try it out to see the impact to my 4 year old desktop, which is still going strong (AMD 4200 Dual Core, 4GB Memory and 200GB HDD).  Alternatively if anyone has a 64GB SSD they’d like me to test I’d certainly appreciate it 😉

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2 responses

  1. Not to be picky, but I think update 8 was the first S10 release to support L2ARC, anyway thanks for a good read.

  2. Thanks for the catch, I missed that functionality wasn’t fully delivered until Solaris 10 update 8. I’ve added a correction.
    As a further note, there’s also a very interesting technical description by Charles for improving MySQL/Innodb/ZFS read-only performance using SSDs and L2ARC:
    http://blogs.sun.com/cs/entry/improving_mysql_innodb_zfs_read
    Cheers, Iain

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