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- From: twb0@ns1.cc.lehigh.edu (Thomas Brown)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: Funny Quantum 240AT HD noise?
- Message-ID: <1992Nov17.001926.32814@ns1.cc.lehigh.edu>
- Date: 17 Nov 92 00:19:26 GMT
- References: <arthuro.20.721929044@rosa.nbr.no>
- Organization: Lehigh University
- Lines: 24
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-
- Arthur N. Olsen (arthuro@rosa.nbr.no) wrote:
- : >>>I just bought the Quantum 240 AT hard disk drive. It has an on-board
- : >>>256K cache, supposedly, and is supposed to be blinding fast. I haven't
- : >>>really gotten a chance to test its speed, but I have noticed that
- : >>>even when nothing's going on, it seems to make a chukka-chukka-chukka
- : >>>sound about every ten seconds.
- :
- : This is quite normal behavior for hardware cached drives, its just the
- : onboard cache flushing every now and then.
-
- The seek noises are thermal recalibration, not hardware cache sync.
- From the technical information I have read, the cache is a read cache,
- not a delayed-write cache. It simply decreases seek/read time.
-
- You will notice that the interval between the noises increases as the
- drive is run for a longer period of time (very short intervals when
- first turned on, very long intervals after an hour or more). This
- behavior is true with all of the Quantum LPS series (52AT, 89, 105,
- etc.), although the exact noise may vary between models.
- --
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- Thomas Brown, KA2UGQ Internet: twb0@lehigh.edu
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