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First just because a drive says it's 72 GB doesn't mean it really is. You could buy a HD that on the box says 72 GB but when windows is done formating it is 69 GB for example.<br />
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Second You lose a bit of space about 5% ish when creating a raid 5. Not only does it use a1/3 of it's drive for parity, but it uses that space as like storage for a table that tells the drive where all the bits are kept. So if you lose a drive, you won't loose the data. This way even with a drive removed the computer can still function as normal.
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First just because a drive says it's 72 GB doesn't mean it really is. You could buy a HD that on the box says 72 GB but when windows is done formating it is 69 GB for example.

Second You lose a bit of space about 5% ish when creating a raid 5. Not only does it use a1/3 of it's drive for parity, but it uses that space as like storage for a table that tells the drive where all the bits are kept. So if you lose a drive, you won't loose the data. This way even with a drive removed the computer can still function as normal.

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Also, whether it's done with Hardware or software makes a difference as well.<br />
Is your raid software based or hardware?
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Also, whether it's done with Hardware or software makes a difference as well.
Is your raid software based or hardware?

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The RAID is hardware based...
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Excellent, thanks very much!
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In addition there is the rounding issus betwen 1 MB as 1000x 1000, vs<br />
1024 x 1024. It adds up.<br />
<br />
I hope this helps !<br />

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In addition there is the rounding issus betwen 1 MB as 1000x 1000, vs
1024 x 1024. It adds up.

I hope this helps !


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Hi<br />
<br />
I have a server with 3 x 72.8 disks in it. The array is configured for RAID 5, so technically I get 2 x 72.8 = 145.6 GB of space.<br />
<br />
However, the Array Configuration Utility states I have 135 GB, and also the sum of all the partitions is equal to 135.<br />
<br />
Where does this missing space go?<br />
<br />
Thanks
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Hi

I have a server with 3 x 72.8 disks in it. The array is configured for RAID 5, so technically I get 2 x 72.8 = 145.6 GB of space.

However, the Array Configuration Utility states I have 135 GB, and also the sum of all the partitions is equal to 135.

Where does this missing space go?

Thanks

Disk space allocation in RAID 5

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.

Server Hardware

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.

Hardware

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.