Path: utzoo!attcan!uunet!munnari.oz.au!uniwa!toivo
From: toivo@uniwa.uwa.oz (Toivo Pedaste)
Newsgroups: comp.arch
Subject: Re: *big iron*
Message-ID: <1989Oct2.035817.523@uniwa.uwa.oz>
Date: 2 Oct 89 03:58:17 GMT
References: <22488@cup.portal.com> <280001@hpdml93.HP.COM> <9911@venera.isi.edu> <34298@lll-winken.LLNL.GOV> <30306@news.Think.COM>
Organization: University of Western Australia
Lines: 15


>Actually, the current DataVaults have 42 drives.  Though the bus to
>the DV is 64 bits wide, it is broken down into a 32-bit data path
>inside the DV.  There are 32 data drives, 7 ECC drives, and 3 hot
>spares, each of which can be switched into any of the other 39
>channels.

What I've wondered about such a configuration is how you bring a disk
back on line after it has failed. Do you rebuild the information on
it by reading the other drives and using the ECC? If so how long does
it take and what effect does it have on the performance of the system?

Just curious.
-- 
	Toivo Pedaste				ACSNET: toivo@uniwa.uwa.oz