Originally posted 03/30/04 by rob-ART
morgan, mad scientist On March 29th, 2004, TransIntl.com introduced the Swift Data 200, an upgrade kit that adds THREE drives INSIDE the G5 case, bringing the total possible internal drives to FIVE. That's right. FIVE INTERNAL DRIVES! ProMax is offering the same product which they call SATAMAXi. That brings the total internal drives to FIVE, which gives you the option to stripe four internal drives and use the fifth internal drive for a booting OS X. Yay! Although most users will probably install SATA drives, you could also install standard IDE/ATA or SCSI drives as well. That's good news for buyers upgrading from a G4 Power Mac. They can transfer their existing drives to their new G5 thanks to Swift. Apple's RAID software and SoftRAID don't care what "mishmash" of drives you choose to stripe. Being a speed freak, I had to wonder how fast 5 striped drives would go. I used DiskTester to measure the speed of reading and writing a 1GB document to both 4 and 5 drive SATA RAID sets. Notice I included the speed of the 4 drive set at 60% capacity and the 5 drive set at 80% capacity. What I wanted you to see in the graphs above is that the 4 drive array drops below the target 180MB/s level at when you are at 60% capacity (559GB) while the 5 drive array is still above that level at 80% capacity (880GB). Hey! Maybe I could install both the G5Jam and the Swift -- that would give me 7 drives -- and if I get seven 400GB Hitachi 7K400s, that's 2.8 Terabyte total -- Moo hah hah! A word of caution: You might be able to "kludge" a cheaper internal expansion -- like the guy who removed his SuperDrive and shoved two drives in the optical bay -- but be sure your solution addresses two key technical concerns: LINKS OF
INTEREST SATA versus SCSI versus FireWire 800 -- more tests from Bare Feats Wiebetech G5Jam review -- another product that adds drives inside the G5 Fastest SATA drives versus BIGGEST: WD Raptor 10K takes on Hitachi 7K400. A pair of FireWire 800 ComboDocks on the PowerBook and PowerMac SoftRAID versus Apple RAID -- features
compared. My favorite SoftRAID feature is "custom volume sizes," which lets you isolate the fastest portion of your RAID set. WHERE TO
BUY ProMax prices for their SATAMAXi start at $395 without drives but it includes a 2 channel SeriTek/1S2 PCI controller card. Our Hitachi 7K250 Serial ATA drives were provided courtesy of TransIntl and Hitachi. Be sure to check TransIntl.com for pricing. Check also with OWC. The best performing Serial ATA PCI host adapter we've tested is the SeriTek/1S2 provided courtesy of FirmTek. This card works on all Macs with PCI or PCI-X slots. It is
available direct from FirmTek's
online store for
$69.95. Check also with TransIntl and OWC. Sonnet Technology will sell you a purple version (Tempo
Serial ATA)
for $99.95. Has Bare Feats helped you? How about helping Bare Feats? WHAT IS DISKTESTER? It is a disk speed testing utility by Lloyd Chambers, the author of DiskDoubler and AutoDoubler. It has no GUI and must be invoked via the Terminal app, however it allows you to set parameters like test file size (1GB, 5GB, etc.), system cache (on/off), iterations, starting block size, etc. My favorite option is the one that lets you reserve a contiguous block which can be tested in predefined segments. I used it to divide a newly formatted RAID set into 10 parts so I could plot the falling transfer rate as the inner tracks were approached. That method is much faster than utilities that test the entire drive like Winbench and SmartVue. If you want a copy of DiskTester to try visit, Lloyd's Software Tools Page. |
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"BARE facts on Macintosh speed FEATS" Email , the webmaster and mad scientist |
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