On Wed, Aug 20, 2008 at 6:48 PM, Ross <[EMAIL PROTECTED]> wrote: >> Where's the beef? >> >> I sense a lot of smoke and mirrors here, similar to Intel's recent CPU >> "announcements" which don't even reveal the number of cores. No >> prices and funny numbers that the writers of >> technical articles can't seem to get straight. >> >> Obviously these are a significant improvement for laptop drives but >> how many laptop users have a need for 11,000 IOPs and 170MB/s? > > Err, laptop drives? Who cares about laptop drives. 170MB/s writes and > 11,000 IOPS? I'll take four please for my ZFS log device! > > Seriously, I don't even care about the cost. Even with the smallest > capacity, four of those gives me 128GB of write cache supporting 680MB/s and > 40k IOPS. Show me a hardware raid controller that can even come close to > that. Four of those will strain even 10GB/s Infiniband.
How about for serving up CDROM and DVD images (genunix.org). Even two 32Gb drives in a ZFS mirrored config would give you 20K+ read OPs/Sec - as compared to a 10k RPM SCSI drive that starts to fall-over at 400 read IOPS. This type is workload is way over 90% read only - a perfect match for an SSD and this type of workload. > Plus, if Intel are comparing these with 5400rpm drives, and planning them for > the laptop market I can't see them being too expensive. Certainly worth the > money. for ZFS. > > Personally I'd like to see something that mounts on a PCIe card, but if I > need to I'll happily start bolting 2.5" SSD's to the sides of my server cases! > I got to play with one of Sun low-power prototypes and it came with apologies for the way the el-cheapo (transend) SSD was mounted in the case. Wait for it... secured by a two inch wide strip of packing tape. It was certainly a "first" for me! I still smile when I think of it. Apparently the Intel folks put some of their heavy math geeks to work on wear leveling algorithms and came up with something that has advanced the state of the art - from what I've heard from people in the know. But few details are available publicly (yet). It's interesting how the SSD has already turned into a chip based arms raced. Explanation: in the old days, because of the cost and lead time, products were only committed to Integrated Circuits (ICs) aka chips, after the technology had matured. This is no longer the case - as we've seen with CMOS digital camera sensors and processing logic. Now we have a case in point with SSDs, where it looks like the technology leaders are out the door with chip based implementations of their first entry into the marketplace. Now thats progress! :) 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
