On Wed, 7 Mar 2001, Jesse Pollard wrote:
> On Wed, 07 Mar 2001, Tom Sightler wrote:
> >Hi All,
> >
> >I'm seeking information in regards to a large Linux implementation we are
> >planning. We have been evaluating many storage options and I've come up
> >with some questions that I have been unable to answer as far as Linux
> >capabilities in regards to storage.
> >
> >We are looking at storage systems that provide approximately 1TB of capacity
> >for now and can scale to 10+TB in the future. We will almost certainly use
> >a storage system that provides both fiber channel connectivity as well as
> >NFS connectivity.
> >
> >The questions that have been asked are as follows (assume 2.4.x kernels):
> >
> >1. What is the largest block device that linux currently supports? i.e.
> >Can I create a single 1TB volume on my storage device and expect linux to
> >see it and be able to format it?
>
> Checkout the GFS project for really large filesystems with a high capability
> of "fail safe" configuration.
>
> The block/file limits are more determined by the size of the hosts. Alpha/Sparc
> based systems use 64 bit operations, Intel/AMD use 32 bit. It also depends
> on usage of the sign bit in the drivers. Most 32bit systems are limited
> to 1 TB (depending on the driver of course - some allow for 2 TB).
Even on 64-bit architectures the hard upper limit is 2TB. (32-bit block
numbers)
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