Date: Thu, 20 Feb 2014 15:02:28 +0100 From: Erik Stian Tefre <erik@tefre.com> To: Willem Jan Withagen <wjw@digiware.nl>, fs@freebsd.org Subject: Re: What types of SSDs to use..... Message-ID: <53060AF4.9070900@tefre.com> In-Reply-To: <5305F8B0.1060308@digiware.nl> References: <5305F8B0.1060308@digiware.nl>
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> Hi, > > I'm looking for advise and suggestions on what SSDs to use for the > ZFS-systems I have and/or am building.... > > I know the difference between SLC en MLC , but beyond that I have not > the best experience with all the older SSD I have lingering about here. > > Most of them just "disconnect" after a while. > It could be because they have exceeded their wear level and just can not > write any more. But than that has occurred rather fast. > > So what types SSD are others using for > ZIL > cache > what is your experience with them > Intel SSDs are good. I've got some handfuls of x25-e, 320, DC S3500 and DC S3700 running in supermicro servers and none of them have ever failed or dropped out in any way. The x25-es have been hammered with database loads 24/7 since 2009 without any issues. I use DC S3500 for cache. DC S3700 is probably better for ZIL. (The 3700 has a higher write endurance HET-MLC, 10x the endurance of the S3500 I think and 4x the write IOPS.) Here's an interesting SSD stress test report by the way: http://www.extremetech.com/computing/173887-ssd-stress-testing-finds-intel-might-be-the-only-reliable-drive-manufacturer -- Erik
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