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Review of Seagate's 750Gb Hard Drive
Zoxed writes "The Tech Report have a comprehensive review of Seagate's Barracuda-7200.10 'perpendicular' drive, including a primer on the technology. They ran performance tests against 10 other drives, checking the noise and power consumption levels. The Seagate fared pretty well, even on cost (per Gigabyte)." From the article: "Perpendicular recording does wonders for storage capacity, and thanks to denser platters, it can also improve drive performance. Couple those benefits with support for 300 MB/s Serial ATA transfer rates, Native Command Queuing, and up to 16 MB of cache, and the Barracuda 7200.10 starts to look pretty appealing. Throw in an industry-leading five year warranty and a cost per gigabyte that's competitive with 500 GB drives, and you may quickly find yourself scrambling to justify a need for 750 GB of storage capacity."
http://www.hitachigst.com/hdd/research/recording_
Watch out for the superparamagnetic effect though.
liqbase
No, this isn't true. If the failure rate of drives is constant (pretty close to reality), then
if you've got 7 drives and I've got 1, you're seven times more likely to lose a drive than
I am.
Granted, you only lose 1/7th if your drive fails, and I lose all of it, but since we're both
making backups (you ARE making backups, right?), you're paying 7 times the space, electricity,
heat, and noise costs for less reliable storage than I am. Assuming that we both run out systems
long enough for drives to fail, you're also paying 7 times as much of your time replacing drives
than I am.
What sense does that make?
*sigh* back to work...
If you've got 7 drives and I've got 1, you're seven times more likely to lose a drive than
I am.
Let's say each drive has a 20% chance of failing. So if you have seven of them, do you have a 140% chance of one failing? Of course not. What you really have is 80%^7 percent chance of them all remaining OK. 80%^7 = 21%. Thus you have around a 79% chance of failure with 7 drives (if they all have 20% failure rate).
Your point still stands - but I noticed pretty much all of the replies to this guy used the same bad math.
Let's not stir that bag of worms...
Anything supporting LBA48 should handle it just fine, although we're rapidly approaching the 2TB limit many controllers have on a single disk/array. LBA48 supports drives up to 128PB (512 byte blocks * 2^48), but of course we're still in a largely 32bit world, so it's more like 512*2^32 unless you're careful.