Thread: firewire ide enclosures?
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From: Dan H. <go...@an...> - 2001-05-22 19:28:03
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Anyone know if these will work with linux? http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1239859940 -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 19:32:25
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> Anyone know if these will work with linux? > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1239859940 the should. you'll need the sbp-2 patches. -sv |
From: Dan H. <go...@an...> - 2001-05-22 19:42:34
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On Tue, 22 May 2001, Seth Vidal wrote: > > Anyone know if these will work with linux? > > http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewItem&item=1239859940 > the should. > you'll need the sbp-2 patches. Maybe some listmembers want to pick some up. At $60/ea they are pretty cheap and the seller has 50 of them. -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 19:44:11
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> Maybe some listmembers want to pick some up. At $60/ea they are pretty > cheap and the seller has 50 of them. the disks are also pretty slow b/c of the transfer rate. -sv |
From: Dan H. <go...@an...> - 2001-05-22 19:49:35
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On Tue, 22 May 2001, Seth Vidal wrote: > > Maybe some listmembers want to pick some up. At $60/ea they are pretty > > cheap and the seller has 50 of them. > the disks are also pretty slow b/c of the transfer rate. these enclosures specifically, or firewire in general? -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 20:10:41
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> these enclosures specifically, or firewire in general? > the disk controller on the enclosures that I've seen so far are pio mode 4 only - so they top out at something around 10MB/s not so good. -sv |
From: Dan H. <go...@an...> - 2001-05-22 20:15:12
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On Tue, 22 May 2001, Seth Vidal wrote: > > these enclosures specifically, or firewire in general? > the disk controller on the enclosures that I've seen so far are pio mode 4 > only - so they top out at something around 10MB/s All the ones ive seen are u66. In fact i cant even find any that are pio 4. All the 1394-ide bridges I know of in existence are at least u33. I dont think anyone actually makes pio bridges. Maybe youre confusing with the scsi-ide enclosures, where all i've seen are pio 4. -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 20:21:14
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> All the ones ive seen are u66. In fact i cant even find any that are pio 4. > All the 1394-ide bridges I know of in existence are at least u33. I dont > think anyone actually makes pio bridges. > > Maybe youre confusing with the scsi-ide enclosures, where all i've seen > are pio 4. if they are udma66 controller then they are the slowest udma66 controllers in the world. -sv |
From: Dan H. <go...@an...> - 2001-05-22 20:33:14
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On Tue, 22 May 2001, Seth Vidal wrote: > > All the ones ive seen are u66. In fact i cant even find any that are pio 4. > > All the 1394-ide bridges I know of in existence are at least u33. I dont > > think anyone actually makes pio bridges. > > Maybe youre confusing with the scsi-ide enclosures, where all i've seen > > are pio 4. > if they are udma66 controller then they are the slowest udma66 controllers > in the world. Hmm... http://sysopt.earthweb.com/reviews/pyro-drive/index4.html http://www.dansdata.com/images/1394drive/graph.gif Of course this may not be the same 1394 bridge, but anyway... -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 21:00:48
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> http://sysopt.earthweb.com/reviews/pyro-drive/index4.html > > http://www.dansdata.com/images/1394drive/graph.gif > from the report: The testing methodology was fairly simple. A large directory (2.51GB) was copied from one drive or location to another and timed with a stop watch. The size of the file and length of time limits the testing error to under one percent, since a second, which is the most the largest error that is likely to occur in timing, is considerably less than one percent of the total time. The drive installed in the drive kit was an IBM DJNA-3718, 18GB, ATA/66 and 7200rpm, and the internal drive was a Western Digital WD153BA, 15GB, and also ATA/66 and 7200rpm. fairly simple? for disk speed measurements I think fairly flawed might be a better statement. additionally they are claiming it took 916seconds to transfer 2.51GB. that says to me its getting 2.7MB/s that sucks. also they are claiming that the ide disks aren't doing as well - but they don't state 1. if dma modes were turned on in software 2. if the transfer was from one disk to another on the same chain or not. this "study" is on crack. -sv |
From: Dan H. <go...@an...> - 2001-05-22 21:11:18
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On Tue, 22 May 2001, Seth Vidal wrote: > this "study" is on crack. and your ide-1394 bridge benchmarks are where? -Dan |
From: Seth V. <sk...@ph...> - 2001-05-22 22:53:48
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> > this "study" is on crack. > > and your ide-1394 bridge benchmarks are where? http://www.phy.duke.edu/~skvidal/bm/fw-vs-udma.txt -sv |
From: Jason D. <ja...@rh...> - 2001-05-22 20:17:25
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On Tue, 22 May 2001, Seth Vidal wrote: > the disk controller on the enclosures that I've seen so far are pio mode 4 > only - so they top out at something around 10MB/s > > not so good. Is firewire like SCSI in that devices can disconnect from the bus, do their work, and reconnect? I don't think I've seen a good explanation of how this works... Thanks Jason |
From: Dan H. <go...@an...> - 2001-05-26 11:03:18
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On Tue, 22 May 2001, Seth Vidal wrote: > the disk controller on the enclosures that I've seen so far are pio mode 4 > only - so they top out at something around 10MB/s http://www.oxsemi.com/products/IEEE1394/fw911ds.pdf http://www.xlr8yourmac.com/firewire/OWC_oxford911/OWC_oxford_911_casekit.html http://www.barefeats.com/fire14.htm http://www.bare-bone.com/icecube/eindex.htm -Dan |