Date: 24 Mar 2002 22:59:51 +0100 From: serge lodder <bsd@lodder.xs4all.nl> To: freebsd-newbies@FreeBSD.ORG Subject: Re: scsi hard drive questions Message-ID: <1017007191.20793.18.camel@bsd.xs4all.nl> In-Reply-To: <20020323164203.A26289@lymond.lvcablemodem.com> References: <20020323164203.A26289@lymond.lvcablemodem.com>
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On Sun, 2002-03-24 at 01:42, Dale Morris wrote: > After getting a plextor scsi cdrom and an adaptec 2940UW card I would > like to add a scsi hard drive. I'm looking at IBM, it seems to get the > best reviews on the mailing list and I'm wondering about ease of > install. My adapter card has both 50 and 68 pin connectors, the cdrom is > connected via the 50 pin cable. Quantum Atlas 10K's and Seagate Cheetah's are the fastest, IBM often uses other manufacturer's drives. > Most of the drives I've seen on ebay are 68 or 80 pin, although I have > noticed some 50 pin drives. Is there much difference in data transfer. I > believe my card has a max transfer of 40m After getting a plextor scsi > cdrom and an adaptec 2940UW card I would like to add a scsi hard drive. > I'm looking at IBM, it seems to get the best reviews on the mailing list > and I'm wondering about ease of install. My adapter card has both 50 and > 68 pin connectors, the cdrom is connected via the 50 pin cable. > > Most of the drives I've seen on ebay are 68 or 80 pin, although I have > noticed some 50 pin drives. Is there much difference in data transfer. I > believe my card has a max transfer of 40m. 50 pins gives max data transfer rate 20mb/s, 68 pins in your case (uw) max 40mb/s, 80 pins is used for hot swappable racks and further same as 68 pins. > I'm also wondering about the difference between the 7200 rpm drives and > 10K drives. This will be used for a home desktop system and server in > the future. main advantage with higher rotation speeds is a better access time. cache is also important, as is platter density (in general you can say more capacity, higher density, more sustained throughput) I'd go for Seagate Cheetah uw 68 pins 18Gb 2nd hand, has 3 years of warranty on it (big nono on IBM: they give 3 year warranty on servers with all in it, just 1 year on a single hdd) > Any info is appreciated. > > thanks > dale yw serge To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message
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