Re: [zfs-discuss] slog device
The problem with that is that I'd need to mirror them to guard against failure, I'd loose storage capacity, and the peak throughput would be horrible when compared to the array. I'd be sacrificing streaming speed for random write speed, whereas with a PCIe nvram card I can have my cake an eat it. ps. Yes, I'm greedy :D This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
Yes, but that talks about Flash systems, and the end of the year. My concern is whether Sun will also be releasing flash add-on cards that we can make use of elsewhere, including on already purchased Sun kit. Much as I'd love to see Sun add a lightning fast flash boosted server to their x64 range, that's not going to help me with ZFS and my existing hardware. I'd really like to know if Sun have any plans for a PCI-X or PCI-E flash card with Solaris drivers, and if they don't have any plans along those lines, I'd love to see some Solaris drivers for the Fusion-io product. Ross This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
On Tue, Jul 8, 2008 at 10:42 PM, Gilberto Mautner <[EMAIL PROTECTED]> wrote: > Hi, > > Anyway, are there other devices out there that you would recommend to use as > a slog device, other than this nvram card, that would present similar > performance gains? Not that this will get you "similar performance gains" - but don't overlook putting a couple of small 15k RPM SAS disk drives in the box. They work great with ZFS and really help out those poor SATA drives when ZFS starts beating up on them.And it also helps if you can't put more RAM in the box. Conduct your own "experiments" with 15k SAS drives as slog/cache devices. Worst case scenario, you'll simply end up using them as ZFS vdevs. :) Regards, -- Al Hopper Logical Approach Inc,Plano,TX [EMAIL PROTECTED] Voice: 972.379.2133 Timezone: US CDT OpenSolaris Governing Board (OGB) Member - Apr 2005 to Mar 2007 http://www.opensolaris.org/os/community/ogb/ogb_2005-2007/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
Ross wrote: > PS. I note on the Fusion-io web page that they're working with HP to > accelerate their servers. Would be nice if somebody from Sun could do the > same (or let us know if Sun are working on similar technology). > I thought the cat was already out of the bag... :-) http://blogs.sun.com/jonathan/entry/not_a_flash_in_the -- richard ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
PS. I note on the Fusion-io web page that they're working with HP to accelerate their servers. Would be nice if somebody from Sun could do the same (or let us know if Sun are working on similar technology). This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
I'm not personally aware of any. The ioDrive from Fusion-io looks the most promising, but it's a new product from a new company so it's likely to be a while (if ever) before Solaris drivers appear. I've contacted them to ask about Solaris drivers, but haven't had a response yet. I summarised my findings in a long post about 2/3 of the way down this thread: http://www.opensolaris.org/jive/thread.jspa?threadID=65074&tstart=30 This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] slog device
Hi, Anyway, are there other devices out there that you would recommend to use as a slog device, other than this nvram card, that would present similar performance gains? Thanks Gilberto On 7/8/08 9:40 PM, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > > Ross wrote: >> Hi Gilberto, >> >> I bought a Micro Memory card too, so I'm very likely going to end up in the >> same boat. >> I saw Neil Perrin's blog about the MM-5425 card, found that Vmetro don't seem >> to want >> to sell them, but then then last week spotted five of those cards on e-bay so >> snapped >> them up. >> >> I'm still waiting for the hardware for this server, but regarding the >> drivers, if these >> cards don't work out of the box I was planning to pester Neil Perrin and see >> if he still >> has some drivers for them :) > > Unfortunately, there are a couple of problems: > > 1. It's been a while since I used that board and driver. I recently tried > pkgadd-ing on >the latest Nevada build and it hung. I'm not sure if the latest Nevada is > somehow >incompatible. I didn't have time to track down the cause. > > 2. I received the board and driver from another group within Sun. >It would be better to contact Micro Memory (or whoever took them >over) directly, as it's not my place to give out 3rd party drivers >or provide support for them. > > Sorry for the bad news: Neil. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
