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- Path: ix.netcom.com!netnews
- From: tspencer@ix.netcom.com (Vee Gibson )
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: JaZZ Drive..
- Date: 25 Jan 1996 18:35:07 GMT
- Organization: Netcom
- Message-ID: <4e8igr$gp1@cloner3.netcom.com>
- References: <310.6593T513T2209@crash.cts.com> <31050887@wvision.iig.com.au> <899.6596T1328T2266@crash.cts.com>
- NNTP-Posting-Host: ix-ogd-ut1-20.ix.netcom.com
- X-NETCOM-Date: Thu Jan 25 10:35:07 AM PST 1996
-
- In <899.6596T1328T2266@crash.cts.com> pwright@crash.cts.com (Phil Wright) writes:
-
- >
- >On 23-Jan-96 15:10:47, Mark P Allen was reported to have said:
- >>In a message of 20 Jan 96 you wrote to All:
- >
- > PW>> Two of them on a striped array controller are just fastest enough to
- > PW>> do so-so quality video.
- >
- >>Is an array possible on the Amiga?
- >
- >Of course. A Raid 0 array just looks like another hard drive only
- faster.
- >There is nothing stopping the Amiga from using other types of Raid
- devices
- >other than the typically large capacity exceeding the Amiga's 4GB
- drive
- >limit.
- >
- >>I'm surprised at your comments regarding video. What is your video
- >>source/playback?
- >
- >Broadcaster Elite.
- >
- >At the top quality setting, with a component video source ie Betacam,
- it
- >will commonly hit frame sizes in the 200-300K size which means you
- need 6-
- >9MB/sec out of your SCSI bus (NTSC 30fps CCIR601 frame size). The Jaz
- >drives can't keep up with this even when striped.
-
- Actually, a SINGLE Jaz drive has a minimum sustained transfer rate of
- 3.5 MB/S (inner zone) and a Max sustained transfer rate of 7MB/S (outer
- zone). Two drives striped (using promax array) will give a minimum
- sustained of 6.5 MB/s. Promax also offers a 4 drive array that will
- easily do 10MB/S. Even two at a minimum of 6.5MB/s should fall well
- withing your 6-9MB/s transfer rates.
- >
- >Cheers,
- >
- > Phil
- >
- >pwright@crash.cts.com
- >
-
-