Precisely as regards putting those SCSI drives in their own external case, with their own power supply. You can daisy chain them with a terminal at the end of the chain and the original connection to the "UL3D or UL4D" or maybe a UL2D which should also work.
Mel --- On Wed, 3/25/09, dc <dbc...@verizon.net> wrote: From: dc <dbc...@verizon.net> Subject: Re: Multiple HDs in Sawtooth To: "G3-5 List" <g3-5-list@googlegroups.com> Date: Wednesday, March 25, 2009, 4:53 AM You didn't say, but putting in 3 drives I'm guessing you are thinking of a RAID setup? I have a single 15K/15MB cache SCSI hard drive in a Sawtooth. Using a fast drive with a big cache gives a very nice R/W speed without going to multiple RAID drives. The big advantages are: 1) Less heat- fast SCSI drives get really hot and the case design of the Sawtooth isn't that great for venting heat from the OEM hard drive sleds. I put my drive on a cooler and mounted it on top of the optical drive, where the PSU fan can pull the heat straight out. You don't need Apple OEM gear, just buy a good quality LVD SCSI cable with an active terminator. 2) In a RAID 0 setup if you lose any one of your drives you lose the whole system. And if you try to cram 3 or 4 hard drives into a Sawtooth the odds are good that the heat will kill one of them. I had two 15K drives running as RAID 0 in a Digital Audio and, despite each have an additional fan, one went bad. I think it was still running too hot. Now with just a single SCSI drive it's been running reliably and I barely notice any real-world performance difference in the R/W speed. If you want to run 3 fast SCSI drives it might be better to use a card with good external ports, like a UL3D or UL4D, and put them in an external housing. The drives and the Sawtooth will run a lot cooler. On Mar 24, 6:08 pm, nestamicky <nestami...@gmail.com> wrote: > Hurray...I'm going SCSI's on my Sawtooth...well, as soon as I get the > help I need. I'm trying to figure out how to safely install more than a > single HD in the Sawtooth. Ideas...someone here must have done it. This > is a physical issue, of course I know how to hook them up...but where > would I physically place 3 SCSIs and maybe an ATA as well. Is this possible? > Thanks a lot! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
