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Re: A Case for a Sensitive Xserve RAID.
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Re: A Case for a Sensitive Xserve RAID.



On 8/27/05 17:20, "Tom Limoncelli" <email@hidden> wrote:

>> There are applications that will have issues with it, there are
>> applications
>> that will have problems the other way. Again, neither is always
>> better or
>> worse. It's just what you need/like to use. The whole case (in)
>> sensitive
>> argument is like Ford v. Chevy, only with less beer and exhaust.
>
> I agree.  However you missed some other points.
>
> UFS isn't journalled.  Thus, if you crash the fsck time can be
> hours.  Point HFS+
>
> UFS is more reliable, it has had a long history of reliability
> studies performed on it.  The BSD development team has a "reliability
> is the top priority" policy.  Point UFS.

Prove it. I've had no reliablilty issues whatsoever that were due to HFS.

>
> UFS is faster.  Dozens of people have gotten their PhD by developing
> performance enhancements to UFS and all those code changes were
> merged into the FreeBSD kernel.  Point UFS.

Again, prove it.

>
> HFS+ craps out if you do many hard links, making reboot times hours
> instead of minutes.  Point UFS.

>
> Tiger supports booting on UFS and HFS+.  Jaguar only supports HFS+.
> Point HFS+.

What does 10.2 have to do with anything?

>
>
> It all depends on what your needs are.  And if your needs are "big
> storage" (terabytes of data) then Apple isn't a serious player.
> (Apple's definition of "big storage" isn't very big).

Define "big". I know quite a few people with multi-terabyte systems on HFS+.
OS X and HFS can handle large filesystems quite nicely.

>
> If Apple added journaling to UFS then I would switch to it in a flash
> on all my servers.  I can't trust HFS+.  If they merged in Kirk's UFS
> "soft updates" and "snapshots" from FreeBSD it would be a no-
> brainer.  That stuff rocks.

Backups are another way to never have to trust your file system. But I have
yet to see hard, reproducible data that says that UFS is noticeably more
reliable than HFS+.

--
John C. Welch         Writer/Analyst
Bynkii.com              Mac and other opinions
email@hidden


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 >Re: A Case for a Sensitive Xserve RAID. (From: Tom Limoncelli <email@hidden>)



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