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- Path: sparky!uunet!caen!uwm.edu!ogicse!johnhunt
- From: johnhunt@apee.ogi.edu (John Hunt)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Is 5 MB/sec to disk possible?
- Message-ID: <45537@ogicse.ogi.edu>
- Date: 9 Nov 92 21:39:51 GMT
- Article-I.D.: ogicse.45537
- Sender: news@ogicse.ogi.edu
- Distribution: world
- Organization: Oregon Graduate Institute, Applied Physics & Electrical Engineering, Beaverton
- Lines: 33
-
- We are studing turbulence in the atmosphere and would like
- to record bursts of 20 Megabytes or so of data to disk
- as quickly as possible.
-
- In the ideal case we would like to achieve a sustained
- transfer rate of 5 MB/second, but we could also make use
- of 1 MB/second rates.
-
- Our platform is a Gateway 486-33 (currently on order).
- Once we have the data on disk we will transfer it to an
- Exabyte tape, then take another burst of data.
-
- 1. Can anyone suggest a disk for this application?
- I assume I will need a separate disk for data collection,
- probably a 3.5", 5400 RPM type. Am I better off with
- a separate SCSI controller or with the local bus IDE
- controller supplied with the Gateway system?
-
- 2. Would I significantly gain speed if I bypass the DOS
- file system and perform raw writes to the disk? Can someone
- who has succeeded with this technique comment on it?
-
-
- John Hunt
-
- Senior Research Engineer
- Dept. of Electrical Engineering and Applied Physics
- Oregon Graduate Institute
- Beaverton, Or. 97006
- (503) 690-1143
- (503) 690-1406 fax
-
- johnhunt@apee.ogi.edu
-