Date: Sat, 22 Feb 2014 11:26:29 +0800 From: Julian Elischer <julian@freebsd.org> To: Erik Stian Tefre <erik@tefre.com>, Willem Jan Withagen <wjw@digiware.nl>, fs@freebsd.org Subject: Re: What types of SSDs to use..... Message-ID: <530818E5.4090100@freebsd.org> In-Reply-To: <53060AF4.9070900@tefre.com> References: <5305F8B0.1060308@digiware.nl> <53060AF4.9070900@tefre.com>
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On 2/20/14, 10:02 PM, Erik Stian Tefre wrote: >> 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. the newest intel drives have enough RAM inhtem to actually index the entire drive in ram, so the performance is a lot better. Prior to that they had to hold the index on flash, (with a cache). > > 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 > doesn't count PCI SSDs.. > > -- > Erik > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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