Date: Wed, 19 Sep 2007 17:47:19 -0700 From: jekillen <jekillen@prodigy.net> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Hard drive RPM Message-ID: <7f28909c2f575ccd98796e2af18d4e05@prodigy.net>
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Hello; Is there a utility for measuring the effective RPM of a hard disk? A software tackometer? I have IDE drives, SATA drives, both 7200 and 10,000 RPM, as well as SCSI disks that are supposed to be running at 15k RPM. I noticed that on the hard drive labels, those on the disk case itself do not specifically indicate what speed they are supposed to operate at. The two 10k SATA drives only had labels on the antistatic packaging indicating that they are 10k drives. I would like to verify the speeds of these drives. I am hoping that this is not a case of misrepresentations that I have found on network attached hard disk storage devices and Firewire drives. I have one that was expressly advertised on the package to be 120 Gb capacity, and in fact only 111Gb are available for storage. That is a 9 Gb discrepancy. A Fire wire drive I have is also designated as 120 Gb and actually only has 117 Gb usable capacity. Like 9Gb is enough for several operating systems. 3Gb is even enough for an operating system. Can anyone shed some light on this? (Storage device labeling, and specifically, RPM specs) I would ask the manufacturers but would be suspicious of bias responses. That is what I got from one of them already. Thanks in advance for responses. The hard drives in question are running on FreeBSD systems on homebuilt hardware. All AMD64 processors, ECS, Gigabyte, and ASUS motherboards, Hard drives are Western Digital IDE, SATA, and Seagate SCSI drives. Jeff K
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