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Navic



Joined: 05 Mar 2007
Posts: 16
Location: USA
Navic
With hard disks limited to 48bit LBA and CPUs to 64-bits, what are the factors that limit volume and file size in NTFS? I found this page from Microsoft that showed a chart of limitations: http://www.microsoft.com/windowsserversystem/storage/getstorfacts.mspx
I was wondering if anyone knows why NTFS is limited to these maximum volume and file sizes?? Thanks!
Post 27 Apr 2007, 07:54
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DOS386



Joined: 08 Dec 2006
Posts: 1901
DOS386
Quote:
hard disks limited to 48bit LBA


48+9 -> 57 address bits -> 2^57 bytes capacity = 128 PiB !!! Problem with this limit ? Laughing

Quote:
and CPUs to 64-bits


Irrelevant. One could implement NTSC on 8-bit CPU's as well (if it was useful) Laughing

Quote:
what are the factors that limit volume and file size in NTFS


Probably NTFS itself Laughing

Quote:
if anyone knows why NTFS is limited


The limit I don't like are the closed specs rather than some theoretical size limits far above 1 TiB Sad

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug
Post 27 Apr 2007, 14:52
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Navic



Joined: 05 Mar 2007
Posts: 16
Location: USA
Navic
Why is it 48+9 = 57 address bits?
Post 28 Apr 2007, 10:34
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DOS386



Joined: 08 Dec 2006
Posts: 1901
DOS386
Quote:
Why is it 48+9 = 57 address bits?


Because 1 sector contains 2^9 = 512 bytes Idea

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug
Post 28 Apr 2007, 11:30
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Navic



Joined: 05 Mar 2007
Posts: 16
Location: USA
Navic
Ok, does this change the maximum amount of addressable disk sectors? I thought 48-bit LBA has a maximum of 281,474,976,710,655 sectors
Post 29 Apr 2007, 01:23
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