Looks good, although 200 MBps data transfer rate doesn't tell much w/o block size, IOPS would have been more useful.
Further, dumping memory contents to CF card on power failure doesn't seem a production-level solution, though I'm probably exaggerating a non-issue here :). Regards, Andrey On Tue, Oct 21, 2008 at 10:26 PM, Andrew M. Hettinger <[EMAIL PROTECTED]> wrote: > I am going to be attempting to do the same thing with an ACard ANS-9010B. > > http://www.acard.com.tw/english/fb01-product.jsp?idno_no=271&prod_no=ANS-9010B&type1_title=%20Solid%20State%20Drive&type1_idno=13 > > They report "Out Of Stock," and their sales rep I talked to today said he > just shipped me the last two in the US. He said they should have more > available next month. I will try and report on my results. (If this works > well, this company needs a larger web presence. it took me about a day of > searching to find this.) > > note: they support ECC, they appear to actually use SATA 300 (rather then > the iRAM's SATA150 interface). Also the battery is used only to dump the > memory to a compact flash on a failure, not to keep refreshing the dram. > > Andrew Hettinger > http://Prominic.NET || [EMAIL PROTECTED] > Tel: 866.339.3169 (toll free) -or- +1.217.356.2888 x.110 (int'l) > Fax: 866.372.3356 (toll free) -or- +1.217.356.3356 (int'l) > Mobile direct: 1.217.621.2540 > CompTIA A+, CompTIA Network+, MCP > > Eric Sproul ---10/20/2008 03:39:49 PM---Andrey Kuzmin wrote: > As to X25-E > (released today), this indeed would be a worthwhile try as > > > From: > Eric Sproul <[EMAIL PROTECTED]> > To: > [email protected] > Date: > 10/20/2008 03:39 PM > Subject: > Re: [storage-discuss] Recommended slog/ZIL size? > Sent by: > [EMAIL PROTECTED] > ________________________________ > > > Andrey Kuzmin wrote: >> As to X25-E (released today), this indeed would be a worthwhile try as >> both ZIL and L2ARC device (I believe the latter, if not both, has >> already been explored at Sun). > > Update to my saga: I'm thoroughly disappointed with Mtron 3035 drives, but > maybe they are just not suited for server use at all. The random write > performance is worse than a mechanical drive! > > At this point, we're looking to put ZIL on an NVRAM-based device, the > Gigabyte > I-RAM with 4GB of memory (its max.) > http://www.gigabyte.com.tw/Products/Storage/Products_Overview.aspx?ProductID=2180 > > In advance of getting that, I did a rough approximation of its performance > by > creating a 4GB file in /tmp and lofi-mounting it. I turned off swap to > ensure > the file didn't ever get swapped out of main memory (I have 32GB in this > box, so > it's not an issue, and it's a test system anyway.) > > # zpool destroy data > # swap -d /dev/zvol/dsk/rpool/swap > # mkfile 4g /tmp/slogfile > # lofiadm -a /tmp/slogfile > # zpool create data raidz \ > c0t2d0 c0t3d0 c0t4d0 c0t5d0 c0t6d0 c0t7d0 log /dev/lofi/1 > > Of course, I can't reboot or crash without losing my ZIL, but this is a test > box, and I'd never run it this way in production. Nevertheless, performance > is > impressive, as we expect: > extended device statistics > r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device > 0.0 6148.2 0.0 786974.6 26.6 3.4 4.3 0.6 86 86 lofi1 > >>6000 write IOPS, or roughly 200x more than we were getting with the Mtrons. > > We'll also be evaluating the Intel X-25E as soon as we can get our grubby > little > hands on one. :) > > Eric > _______________________________________________ > storage-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/storage-discuss > > > > _______________________________________________ > storage-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/storage-discuss > > _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
