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Article #394Re: Disks with Multiple, Independent Sets of Heads
From: Terence Kelleher
Date: Fri, 17 Nov 1989 13:37
Date: Fri, 17 Nov 1989 13:37
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1516 bytes
In article <10144@alice.UUCP>, andrew@alice (Andrew Hume) writes: > > >imprimis sells a version of their 8" 1.2GB sabre drives that has >two independent heads (for a total I/O bandwisth of 6MB/s). >its called a "Sabre 2HP". The Sabre 2HP does not have 2 sets of heads. It has the same HDA as the standard Sabre 1230. What is has is electronics that allows it to read/write from 2 heads at a time rather than one. It has 2 read/write channels. This gives it higher speed data transfer, but does not improve seek time or latency. > >imprimis is also developing a hooning sabre that connects to a >xylogics or ciprico controller (which looks like an IPI-3 interface >to a host). >Each head has an I/O path which means 9x3=27MB/s bandwidth. although >in this case, i believe th heads have to be moved together. Sounds expensive. Where does the 9 come from? The latest Sabres are 15 head drives. -- Terry Kelleher, Encore Computer Phone: 607-798-9602 Internet: terryk@encore.encore.com
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!usc!snorkelwacker!husc6!bu-cs!encore!pinocchio From: terryk@pinocchio (Terence Kelleher) Newsgroups: comp.periphs Subject: Re: Disks with Multiple, Independent Sets of Heads Message-ID: <10385@encore.Encore.COM> Date: 17 Nov 89 13:37:55 GMT References: <5995@wiley.UUCP> <10144@alice.UUCP> Sender: news@Encore.COM Reply-To: terryk@pinocchio (Terence Kelleher) Organization: Encore Computer Corp Lines: 26 In-reply-to: andrew@alice.UUCP (Andrew Hume)