Posted by: "Blair Fisher" blairfisher@shaw.ca blairfisher4444 > Fri Nov 3, 2006 11:26 pm (PST) > > > > >>> > > Sometimes I¹m amazed that anybody fixes anything! Thanks to > the LUG, > >>> > > at least we have a fighting chance. Raptor owners, beware ; > > > > On my Quad I have a : > > > > WDC : WD2500JS-41MVB1 as my main drive > > Raptor : WD740GD-00FLC0 with the QLSO Platinum Library > > > > On my G5 2x2 I have a raid of 6 x 36 GB Raptor with a RocketRaid > > 1820A, working fine_,___ > > > > > Hmmm the plot thickens.... Will no one rid me of this turbulent hard > drive?.... ;) No, I think the plot is still thin. Cyril is using a third-party card. WD said very clearly that that would work. If you have a free PCI slot, that's what I'd suggest you do. The one I bought - Sonnet Tempo 4+4 eSATA - is overkill (but the best option at the time I bought it); now you can pick up one that works fine for $50 or so. Nick Batzdorf, editor/publisher Virtual Instruments Magazine - the world of softsynths and samplers www.Virtualinstrumentsmag.com 1-877 VImagzn (846-2496) 818/905-9101, cell 590-9101

--- In logic-users@yahoogroups.com, Nick Batzdorf <recording@...> wrote: > > No, I think the plot is still thin. Cyril is using a third-party > card. WD said very clearly that that would work. > > If you have a free PCI slot, that's what I'd suggest you do. The one > I bought - Sonnet Tempo 4+4 eSATA - is overkill (but the best option > at the time I bought it); now you can pick up one that works fine for > $50 or so. WD tech support also told me on the phone that buying a SATA card would be a waste because any benefit of the Raptor speed would be cancelled out by the fact that it was on the PCi bus instead of the motherboard - their words not mine... I do not know if this is true or not. Probablly a RAID system would be different, but I just bought a Seagate Baraccuda and all seems fine now.

> > Hmmm the plot thickens.... Will no one rid me of this turbulent hard > > drive?.... ;) > > No, I think the plot is still thin. Cyril is using a third-party > card. WD said very clearly that that would work. > > If you have a free PCI slot, that's what I'd suggest you do. The one > I bought - Sonnet Tempo 4+4 eSATA - is overkill (but the best option > at the time I bought it); now you can pick up one that works fine for > $50 or so. On the Quad I am not using additional cards What is strange is that my SATA drive references are not exactly the one reported on WD's conferences Are my drive more recent or older ? This a good question to ask to WD's tech support ! Why no problem with a WD740GD" an problems with a WD7400ADFD What is very strange too is that the main disk on my Quad is the one that was originally installed by APPLE ! Strange ! would say Mr Watson I have post this question on WD's tech support Best Cyril ----------------------------------------------------------- My Mail is filtered by Personal Antispam. Join the Independent Quantum Leap Symphony orchestra (Q.L.S.O.) and Symphonic Choir Forum for Mac http://groups.yahoo.com/group/qlso A6 Andromeda forum : http://groups.yahoo.com/group/A6_andromeda

On Nov 4, 2006, at 4:04 PM, cpezc wrote: > > WD tech support also told me on the phone that buying a SATA card > would be a waste > because any benefit of the Raptor speed would be cancelled out by > the fact that it was on the > PCi bus instead of the motherboard - their words not mine... I do > not know if this is true or > not. Probablly a RAID system would be different, but I just bought > a Seagate Baraccuda and > all seems fine now. > The thing to remember about DAWs is that they don't need raw data throughput (do the math, even with large track counts.) What they *do* need is low rotational latency and seek time, and that's the advantage of the Raptors. So any loss of raw bandwidth by using a PCI card is unlikely to have any real impact. RAID may help or hurt, depending on many factors, such as the size of the RAID block relative to the size of the data block read by the DAW (which in turn may be modified by the o/s and so may be out of your control.) The best scenario would be to have multiple, independent, low-latency drives, and spread the track files across those multiple drives (and not RAID them at all) since this does exactly what you would like RAID to approximate. Unfortunately Logic doesn't make this easy... --Dave

Hello I have send a mail to WD's tech support the answer is : Difference between : WD740GD ( 8 MB cache) (the one that I have on my Quad) and WD740ADFD (16 MB cache) http://www.wdc.com/en/products/productcatalog.asp WD740ADFD SATA 1.5 Gb/s 10,000 74 GB 4.6 ms 16 MB WD740GD SATA 1.5 Gb/s 10,000 74 GB 4.5 ms 8 MB (the one that I have on my Quad) -00FLC0 : this is the firmware version of drive. The Apple G5 tower does not support certain standard Serial ATA interface protocols used by the WD4000YR, WD4000KD, WD360ADFD, WD7400ADFD, WD1500AHFD, and WD1500ADFD hard drives resulting in an interface lock-up. This causes the computer system to hang. So the GD is working but not ADFD. Best Cyril ----------------------------------------------------------- My Mail is filtered by Personal Antispam. Join the Independent Quantum Leap Symphony orchestra (Q.L.S.O.) and Symphonic Choir Forum for Mac http://groups.yahoo.com/group/qlso A6 Andromeda forum : http://groups.yahoo.com/group/A6_andromeda