How many platters in hard disk

In , a in. By , it was common for PCs to come with 40MB disk drives. Five years later, the typical new desktop computer had a 1GB or 2GB hard drive. Nowadays, you can buy laptop computers with 30GB drives, and 48GB 2. And as for price, in I bought an 80MB, 5.

The combination of low price and high capacity came together in , when IBM assembled a group of these inexpensive drives into the first RAID systems that offered security and error recovery to the mix. Even in today's world of storage-area networks and network-attached storage, the basic building block is the individual magnetic disk drive, and that's perfectly exemplified in the currently popular acronym JBOD — just a bunch of disks. In this exploded view, you can see the major components that go into a typical drive:.

For magnetic media used on computers, disk is the preferred spelling. For other round, flat objects, including optical storage media such as CDs—audio or data—and DVDs, the proper spelling is disc. Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search.

I'm curious to know how many platters, heads, cylinders are in some of the popular consumer drives, but I could not seem to locate this info in the specification sheet. Why is this not included in the spec sheets, and where might I find this info, if it can be found at all? Most new desktop hard drives with 1 TB or lower capacity have only one platter to reduce cost. As more platters are added onto the drive, drag and turbulence from the air inside the drive become an increasingly significant issue, which is why consumer hard drives top out at five platters.

Drives of GB or lower capacity typically use only one platter. Thin drives with 7mm or 5mm z-height are limited to one platter. Because helium has significantly lower density than air, there is less turbulence on the platters, reducing power consumption and allowing more platters to be used. These drives are designed for use in datacenters where storage density and power are critical. All of the WD Blue drives on the spec sheet you linked to have one platter. Cylinder count is no longer relevant; modern hard drives store more data on outer tracks of the hard drive than on the inner tracks.

An 18TB nine-platter drive would then become a 20TB platter product, assuming no increase in areal density. All HDD manufacturers continue to assess back-up plans for such platter disk drives, Trendfocus said.

That would imply they would arrive in Conventional disk drives use perpendicular magnetic recording technology. Submit ». Verify your account to enable IT peers to see that you are a professional. Thai Pepper. Antonio This person is a verified professional. I am not able to find any in web.

John This person is a verified professional. JoeWilliams This person is a verified professional. Clue's in the name. Justin - 7 Aug 11, at UTC. VWernicke wrote: Honestly, I don't see why anyone outside of some kind of strange and special use hard drive repair service would care much I was once told by a very smart man: "if you can't answer the stupid question, how can I trust you with the important ones?

George Aug 11, at UTC. Pure Capsaicin. That's the crux of it. Justin - JDC wrote: VWernicke wrote: Honestly, I don't see why anyone outside of some kind of strange and special use hard drive repair service would care much That sounds like something an idiot manager would say honestly. Just because you don't know something someone else thinks is simple doesn't mean you are stupid.

Alright my friends. Lets stop arguing with each other with your permission. Ricardo This person is a verified professional. Jon Micron This person is a verified professional. Ethan This person is a verified professional.

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