UPDATE: 1TB External RAID shows up as 512GB

From: Ray Pengelly (ray@biomed.queensu.ca)
Date: Wed Jan 07 2004 - 14:22:31 EST


I believe some more info is needed of my setup.

I'm running Sol9x86 on a Tyan Tiger 2721-ugn motherboard. This has builtin
Adaptec AIC-7902W Dual channel SCSI controller. On Channel A I have a 36GB
hard drive running as the system drive. On Channel B (my external channel) I
have an external Storcase DS560 RAID Array. This array uses an Accusys SCSI
to IDE Raid Controller. I have it loaded with 5 X 250GB drives in a RAID 5
configuration. The controller shows the Array to be 1TB. When I boot into
solaris and run SMC or format it shows up as 512GB.

Tim Chipman gave some insight with the following:

>We've got a Sol8X86 fileserver, it has an external 1.4 Tb disk array.

>When I was setting it up, I observed the same problem. The vendor for

>the array was prompt to let me know of a known issue in Solaris 8 X86,

>which limits single LUN size for this platform to 512gb. [it is

>documented in sunsolve, and if you really need it I can probably dig up

>the case-ID/reference ##].

>Only workaround if you must have larger lun would be maybe to use

>disksuite and then create a metavolume spanning multiple luns physically

>sized @ the 512gb limit, and then mount this metadisk...

>I suspect the same limitation is present in sol9X86 but cannot confirm

>for certain :-)

>hope this is of slight help,

>Tim

Does anyone know if this is true for Solaris 9 x86 before I break my array
and reinitialize it with 2 LUNs?

I also got some info about installing the SUNWqus and SUNWqusu drivers but
isn't that just the driver for the Sun dual channel ultra-3 SCSI card or
does it just add support for larger LUNs?

Thanks

Ray

Ray Pengelly

Computing Support Technologist

Centre for Neuroscience Studies/

CIHR Group in Sensory-Motor Systems

Queen's University

Give a person a fish and you feed them for a day; teach that person to use
the Internet and they won't bother you for weeks.
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