Date: Thu, 4 May 2000 15:22:46 -0400 (EDT) From: mi@privatelabs.com To: vallo@matti.ee Cc: freebsd-stable@FreeBSD.ORG Subject: Re: How good is AMI MegaRAID support? Message-ID: <200005041922.PAA07955@misha.privatelabs.com> In-Reply-To: <20000504210635.A8681@myhakas.matti.ee>
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On 4 May, Vallo Kallaste wrote: = Are you sure? I think the upcoming IBM ServeRaid version 4 adapters = will have PowerPC 750 processor which outperforms current host = processors easily? Anyway I think for degraded mode you'll definitely = need separate processing unit to offload parity calculations from host = processor, else the system will calculate parity not service users. Generally, you want all of the available power to be used all the time. In this case, you'd want to have a lot of CPU. When the array works in a degraded mode, there is still enough for your users. When it functions properly, the extra processing power is not wasted. = That's theory, of course, but it seems so obvious. Am I missing = something? Well, the way you describe the ServerRaid4, it will add another processor to a machine, without the benefits of SMP -- no _symmetrical_ multi-processing... -mi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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