FAQ: I installed a 300GB hardrive, but it reports 279GB....

Check out the Readme, FAQ, and the HCL here!
Forum rules
We've moved! Head over to Synology Community (community.synology.com) to meet up with our team and other Synology enthusiasts!
Locked
User avatar
Franklin
Synology Inc
Synology Inc
Posts: 6662
Joined: Sat Oct 14, 2006 11:33 pm
Location: Washington, USA

FAQ: I installed a 300GB hardrive, but it reports 279GB....

Unread post by Franklin » Thu Oct 19, 2006 11:14 pm

So you purchased a 300GB hard drive, but the computer reports only 279.39GB available, and you want to know where the other 20.61GB disappeared to.... It didn't disappear.

What you see here is a differnece in scale, since manufactures report capacity as a Decimal gigabyte, which is defined as 1,000,000,000 bytes. But computer read everything as binary and a Binary gigabyte is defined as 1,073,741,824 bytes.

So, the percentange difference between a decimal gigabyte and a binary gigabyte is 0.9313 percent. So, if a manufacture states a 300GB hard drive, do the calulation of 300 * 0.9313 = 279.39GiB, which is your actual usable storage.

Also note, IEC released a new standard of measurement to differentiate from Decimal Storage Measurement (300GB) and Binary Storage Measurement (279.4GiB)


Want to read more? Click here
**Franklin is not available**
**Please do not Private Message me for support questions; leave it on the forum so all members can learn. Thanks!**
Library ~ SynologyWiki ~ Synology FAQ ~ Compatibility Lists
Forum Links ~ Forum Policy ~ 3rd-party forums ~ Help us help you ~ Posting Images
Demo Links ~ DSM GUI ~ Photo Station
Downloads ~ Firmware Downloads ~ Beta Program
Support ~ Support Form ~ Submit Kernel ~ Synology eNews

Locked

Return to “Read First”