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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!ukma!darwin.sura.net!utkux1.utk.edu!martha.utcc.utk.edu!harp
- From: harp@martha.utcc.utk.edu (harp)
- Subject: Re: Funny Quantum 240AT HD noise?
- Message-ID: <1992Nov17.034518.15682@utkux1.utk.edu>
- Sender: usenet@utkux1.utk.edu (USENET News System)
- Organization: University of Tennessee Computing Center
- References: <arthuro.20.721929044@rosa.nbr.no> <1992Nov17.001926.32814@ns1.cc.lehigh.edu>
- Date: Tue, 17 Nov 1992 03:45:18 GMT
- Lines: 33
-
- In article <1992Nov17.001926.32814@ns1.cc.lehigh.edu> twb0@ns1.cc.lehigh.edu (Thomas Brown) writes:
- >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.
- >
-
- I have my Quantum 120lps information sheet right in front of me and it says
- that the drive does indeed have a :
-
- * 256k segmented cache
- - DisCache - look-ahead read caching for faster data retrieval
- - WriteCache - Sophisticated caching technique to streamline
- write commands
-
- Thus the drive DOES have a write cache. Whether or not the cache is
- causing the noise, I can't say. The drives write caching helps speed the
- writes considerably.
-
- Sean Harp
- University of Tennessee
-
- >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.
- >--
- >--=--
- >Thomas Brown, KA2UGQ Internet: twb0@lehigh.edu
- >Lehigh University UC Box 855 UUCP: ..!uunet!lehigh.edu!twb0
- >Bethlehem, PA 18015 AX.25: ka2ugq@ka2ugq.nj.usa.na
-
-
-