-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - --On Saturday, July 21, 2007 11:55:39 -0500 Dan Nelson <dnelson@allantgroup.com> wrote:> In the last episode (Jul 21), Tim Daneliuk said: >> I asked this question a while back, but needed to do more digging to make >> sure I had latest sources etc. >> >> I have an Intel motherboard that shows this for a SATA controller: >> >> atapci1: <Intel ICH7 SATA300 controller> port >> 0x20c8-0x20cf,0x20ec-0x20ef,0x20c0-0x20c7,0x20e8-0x20eb,0x20a0-0x20af mem >> 0x90204000-0x902043ff irq 19 at device 31.2 on pci0 >> >> But the hard drive - a SATA 300 device - shows up like this: >> >> ad4: 238475MB <WDC WD2500JS-00NCB1 10.02E02> at ata2-master SATA150 >> ^^^^^^^ >> Using dd, I have confirmed that the drive is running nowhere near >> SATA-III speeds, at least on reads: >> >> 968470075 bytes transferred in 7.132891 secs (135775249 bytes/sec) > > What was your dd commandline? If you've got more than 1GB of RAM and > tested by reading a file and not the raw device itself, you just tested > FreeBSD buffer cache. According to > http://www.wdc.com/en/products/productspecs.asp?driveid=135 , that > drive's maximum sustained speed is only 93.5 MB/sec, so it doesn't > really matter if your interface is running at SATA150 or SATA300 unless > you plan on reading exclusively from its 8MB buffer :)'k, I just bought a new desktop, SATA/300MB/s interface, and this drive: <http://www.wdc.com/en/products/products.asp?DriveID=254> Web site states 3Gb/s ... I'm seeing same SATA!50: atapci0: <JMicron JMB361 SATA300 controller> port 0xbf00-0xbf07,0xbe00-0xbe03,0xbd00-0xbd07,0xbc00-0xbc03,0xbb00-0xbb0f mem 0xfdbfe000-0xfdbfffff irq 16 at device 0.0 on pci2 atapci1: <Intel ICH8 SATA300 controller> port 0xfa00-0xfa07,0xf900-0xf903,0xf800-0xf807,0xf700-0xf703,0xf600-0xf60f,0xf500-0xf50f irq 19 at device 31.2 on pci0 atapci2: <Intel ICH8 SATA300 controller> port 0xf300-0xf307,0xf200-0xf203,0xf100-0xf107,0xf000-0xf003,0xef00-0xef0f,0xee00-0xee0f irq 19 at device 31.5 on pci0 ad8: 152627MB <WDC WD1600AAJS-08PSA0 05.06H05> at ata4-master SATA150 Latest 6.x STABLE ... - ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFGosqU4QvfyHIvDvMRAhENAKDhq0K+IDbZvD9Lcm51aLTwzjhz9ACgnFZz b3iDMLhANYWByT3a7Vu3utQ=ZnlY -----END PGP SIGNATURE-----
On Sun, Jul 22, 2007 at 12:10:12AM -0300, Marc G. Fournier wrote:> 'k, I just bought a new desktop, SATA/300MB/s interface, and this drive: > > <http://www.wdc.com/en/products/products.asp?DriveID=254> > > Web site states 3Gb/s ... I'm seeing same SATA!50:Seagate and WDC both ship SATA300 drives with a SATA150-limiting jumper on them. It's documented on the drive itself, and in the manufacturing manuals. Both companies do this as a precaution; there are some buggy chipsets out there which claim to support SATA300 but then break badly when utilising it. This is why the jumper's set to SATA150 by default. Chances are your drives have the jumper limiting the drive to SATA150. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
On Sun, Jul 22, 2007 at 12:10:12AM -0300, Marc G. Fournier wrote:> > In the last episode (Jul 21), Tim Daneliuk said: > >> ad4: 238475MB <WDC WD2500JS-00NCB1 10.02E02> at ata2-master SATA150 > > ad8: 152627MB <WDC WD1600AAJS-08PSA0 05.06H05> at ata4-master SATA150Something else I thought I'd mention in passing (though neither of you are affected by this, but I thought I'd throw it out there so people can find it): There is a specific model of WDC drive that reports incorrect thermal statistics via SMART. The temperatures are approximately 20C off (20C too high). The problem may affect other models, but so far has been confirmed by WD to affect 1 specific model. Rumour is that a drive firmware update can fix the problem, but WD isn't giving out the firmware nor the updater. Instead they're insisting owners file an RMA and send the drive back to WDC. How "convenient". Two weeks ago I noticed one (Seagate) drive in our server was reporting 32C, while the WDC drive in the carrier next to it was reporting 54C. As usual these days: Google to the rescue. I opted to do the "Advance Replacement", which is where you pay $80 or so for a replacement drive to be shipped to you first, and you'll be credited when WD receives the RMA'd drive. I'm glad I did it this way too, since chances are had I done a standard RMA it would've been returned to me with a "there's nothing wrong with this drive" note. The new drive I received had the same model and f/w revision, yet didn't see +20C temperatures via SMART. Hmmmm! The reason I'm pointing this out: either it's a hardware problem (thermistor of the wrong kind being installed), or a f/w problem. If it's a f/w problem, they aren't bothering to update the f/w revision number to differentiate drives with the broken code vs. ones with the working code. Naughty Western Digital... The file I kept on this matter is below, which includes a quote from some forum user. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | ====================================================Protocol Serial ATA II device model WDC WD2500KS-00MJB0 firmware revision 02.01C03 http://episteme.arstechnica.com/groupee/forums/a/tpc/f/24609792/m/857003655731 http://forum.effizienzgurus.de/f40/temps-bei-wd-se16-250gb-wd2500ks-t1060.html "So I got in touch with WD's Customer Support and I have just being informed that this paticular drive, WD2500KS-00MJB0, contains a bug in the Firmware (mine got version number 02.01C03) with regards to the usage of the SMART feature. The temperature of the drive which it reports is not correct. Mine read over 30 degrees centigrade just after I started the PC up. This Temperature got up to 62 degrees after a short while, whilst my other two WD drives still reported only 32-33 degrees in about the same position in the tower as this drive. I've been told an Firmware upgrade to rectify this is on it's way." http://www.bugtrack.almico.com/view.php?id=468 http://secure.ncix.com/forumpost/displaythread.php?threadid=1026701 http://www.lavalys.com/forum/lofiversion/index.php/t1372.html =====================================================