24 TB UFS2 reality check ?

[Jeff Mohler]

Wow..the odds of hitting an uncorrectable bit error are actually
pretty HIGH in that configuration,.

Good luck.

You may get to find out why Enterprise arrays are expensive.



On Tue, Jul 8, 2008 at 12:28 PM, Juri Mianovich <juri_mian at yahoo.com> wrote:
> I am about to attach 24 1 TB drives to a 3ware 9650SE-24 raid card and attach it to a FreeBSD 6.3-RELEASE system.
>
> I am going to newfs that raw disk and turn it into one giant 24 TB UFS2 filesystem:
>
> newfs -i 65536 -U /dev/da1
>
> I intend to enable quotas on this system BUT I do not intend to set any >2TB quotas for any one particular user.
>
> Questions:
>
> - anything else I should know ?  Any danger ?  Other than decreasing inode density, like I am with '-i 65535' are there any other settings I should be considering ?  I will set kern.maxdsiz="2572000000" ... which I hope will be enough for fsck.
>
> - I have been (sort of) following the recent thread about >2TB quotas - let's say I have a user with _no quota set_ but they amass more than 2 TB of files - is that still a problem ?  Or is it only a problem if I actually set a quota for them  of >2TB ?  Will repquota report correctly, even though they don't have a quota set ?
>
> Thanks.
>
>
>
>
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