![]() The S.M.A.R.T wiki page has some brand/model specific features and notes, although any wiki may not be 100% accurate.) Components can fail without any previous indication of degradation, so always have a current backup of important data. ("S.M.A.R.T." ( Self-Monitoring, Analysis, and Reporting Technology) Utilities can check cycles and many other important indicators used to monitor a drive's "Health" - although not all failures are predictable. (Some drives have over 1 million cycles w/o a failure, although others will fail earlier - for various reasons.) He also said the drives in the MB/MBP didn't exhibit any apparent noise (clicking, etc.) that used to be the main complaint/indicator for drives with this behavior. 4, 2009 (see copy below) from an OS X 10.5.x user with 3 WD 250GB Scorpio drives (1 PATA, 2 SATA) that said his drives had high cycle rates that would exceed the drive mfr's max rating of 600K cycles. I decided to post this page after report on Feb. The issue of notebook hard drive frequent head parking/cycling has come up at times in the past (originally many years ago) and again recently so I wanted to get a larger sample of OS X user feedback (with any brand/model of notebook hard drive). ![]() 7th for Volitans' reply to some questions.) (Samples from OS X users of various Hard Drive brands) OS X Notebook Hard Drive Load Cycle Counts (from end users) Recent Updates | Mac Upgrades/Repairs | Storage | Video/Displays | Audio/Home Theater/TVs | Tips/OS Updates/WiFi | Home Excessive Drive Cycling with Notebook Hard Drives in OS X?
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