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Author Topic: Max hard drive size?  (Read 14946 times)

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Offline xerces8Topic starter

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Max hard drive size?
« on: January 02, 2011, 04:10:38 PM »
Hi!  With 3TB hard drives out, I am wondering, what is the maximum size Amiga can handle (with appropriate patches and file systems) ?  Regards, David
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Offline Piru

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Re: Max hard drive size?
« Reply #1 on: January 02, 2011, 04:18:12 PM »
Quote from: xerces8;603408
hi!  With 3tb hard drives out, i am wondering, what is the maximum size amiga can handle (with appropriate patches and file systems) ?
2TB





[random stuff here to make it possible to post 2TB in capitals]
« Last Edit: January 02, 2011, 04:20:51 PM by Piru »
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Offline freqmax

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Re: Max hard drive size?
« Reply #2 on: January 02, 2011, 05:33:41 PM »
What setup is capable of 2 TB, and what AmigaOS version does it require?
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Offline Franko

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Re: Max hard drive size?
« Reply #3 on: January 02, 2011, 06:54:38 PM »
With SmartFileSystem Version 1.277 the max HD size is in fact 64TB... :)

I use it myself and have tested it on OS3.0 / 3.1 / 3.5 / 3.9 & 4.0... :)

The biggest HD I have tried so for is 1TB, I've never had any problems with SFS or loss of data. The big plus of SFS is the ability to create single file sizes of 4GB or larger if you require them (DVD ISO images for example)... :)

This is something that other Amiga file systems can't do... :)
« Last Edit: January 09, 2011, 06:17:40 AM by Franko »
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Offline Thomas

Re: Max hard drive size?
« Reply #4 on: January 02, 2011, 07:11:47 PM »
SFS cannot increase the maximum the driver can access.
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Offline Franko

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Re: Max hard drive size?
« Reply #5 on: January 02, 2011, 07:18:37 PM »
Quote from: Thomas;603429
SFS cannot increase the maximum the driver can access.


?
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Offline xerces8Topic starter

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Re: Max hard drive size?
« Reply #6 on: January 02, 2011, 07:47:07 PM »
Quote from: Thomas;603429
SFS cannot increase the maximum the driver can access.

In what maximum can drivers access?
At least common ones, like A1200 builtin etc.
2 TB ?
Is there a limit in RDB? (last time I checked it looked like it can handle many more, but that was years ago. No, decades ago.)
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Offline johnklos

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Re: Max hard drive size?
« Reply #7 on: January 02, 2011, 07:54:37 PM »
Both IDE and SCSI can only directly handle 2^32 (or 4 billion) sectors, which is 2 terabytes (or 2,199,023,255,552 bytes).

Both IDE and SCSI are extensible, so they technically can talk to drives which are larger, but if the chips don't directly support the larger sizes, then the CPU must do all the work of preparing and sending commands which ask for sectors beyond the 32 bit boundary, which means it's possible but slower.

When it comes to the Amiga's IDE, the CPU already does all the work, so it wouldn't be any slower, but someone would have to update the IDE drivers.

I've personally run 2 TB drives on both the Amiga's IDE and on the CyberStorm PPC SCSI under NetBSD. I don't have any 3 TB drives yet, but when I get one I'll pop one in and see how it works.
« Last Edit: January 02, 2011, 07:57:35 PM by johnklos »
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Offline ChaosLord

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Re: Max hard drive size?
« Reply #8 on: January 02, 2011, 08:19:28 PM »
My brother says the max hard drive size on Windows XP is 2TB and that if I want to use 3TB drives I hafta switch to Windows 7.  Is that true?
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Offline ChaosLord

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Re: Max hard drive size?
« Reply #9 on: January 02, 2011, 08:21:37 PM »
Quote from: johnklos;603435
Both IDE and SCSI can only directly handle 2^32 (or 4 billion) sectors, which is 2 terabytes (or 2,199,023,255,552 bytes).
No.  It depends how big the sectors are.
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Offline Nostalgiac

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Re: Max hard drive size?
« Reply #10 on: January 02, 2011, 08:39:57 PM »
Quote from: ChaosLord;603437
My brother says the max hard drive size on Windows XP is 2TB and that if I want to use 3TB drives I hafta switch to Windows 7.  Is that true?


the easy answer is yes,move to w7 to avoid any issues and be at ease.

It can be done in XP (by using larger sectors) but sooner or later you will get hit by a rogue program that damages the file-system.

Tom UK
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Offline amigakit

Re: Max hard drive size?
« Reply #11 on: January 02, 2011, 09:00:25 PM »
I have just added a 2TB Seagate SATA drive to my A1200 with FastATA/Sata adapter, OS 3.9

The first problem I had was with OS 3.9 HDToolbox.

I recommend first installing the RDB with AmigaOS 3.9 BB2 HDToolbox.  Once the RDB is written, do not add partitions yet as soon as you press the PARTITION button, HDToolbox attempts to automatically add hundreds of small partitions which eventually crashes the Amiga!

Go into HDInstTools, manually add a few parititions at the start of the hard disk, then save and reboot.  Go back into OS 3.9 BB2 HDToolbox and resume adding partitions (no crashes this time)

I recommend using SFS1 v1.279 for the System partition (bootable) and SFS2 v1.279 with long filename support for all others.  Keep the first bootable partition (System) under 2GB in size.

You should ensure before prepping the hard disk that you have a patched 64-bit scsi.device and 64-bit Filesystem to use on the hard disk.

Hope this helps!
« Last Edit: January 02, 2011, 09:30:15 PM by amigakit »
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Offline johnklos

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Re: Max hard drive size?
« Reply #12 on: January 02, 2011, 09:25:22 PM »
Quote from: ChaosLord;603438
No.  It depends how big the sectors are.

My apologies that I didn't put a sufficient number of "generally" disclaimers. You know what I mean - drives with sector sizes other than 512 bytes are exceedingly rare, plus the new drives which have 4k sectors start up in a mode where they deliver 512 byte sectors by default, plus since there are no native SCSI devices larger than 2 TB and SCSI to IDE or SATA adapters have not been updated yet to support 4k sectors, and since the IDE bus on the Amiga can't support sector sizes for hard drives other than 512 bytes without modifying drivers, the answer is still the same - 2TB.
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Offline Piru

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Re: Max hard drive size?
« Reply #13 on: January 02, 2011, 09:42:47 PM »
Quote from: ChaosLord;603438
No.  It depends how big the sectors are.

Incorrect, it does not depend on the sector size. Amiga can only address 2TB with trackdisk64 and NSD.
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Offline XDelusion

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Re: Max hard drive size?
« Reply #14 on: January 02, 2011, 09:59:43 PM »
I assume MorphOS on my EMac will handle a 2TB internal drive as well then?
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