Linked by Thom Holwerda on Mon 20th Jul 2009 19:16 UTC
Sun Solaris, OpenSolaris The Linux desktop has come a long way. It's a fully usable, stable, and secure operating system that can be used quite easily by the masses. Not too long ago, Sun figured they could do the same by starting Project Indiana, which is supposed to deliver a complete distribution of OpenSolaris in a manner similar to GNU/Linux. After using the latest version for a while, I'm wondering: why?
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RE[7]: Comment by OddFox
by phoenix on Mon 20th Jul 2009 22:23 UTC in reply to "RE[6]: Comment by OddFox"
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Why would you have to cut your storage space in half in order to gain the benefits of self-healing and error detection? Or are you talking about single harddrive setups?

Single or multiple, what matters? You need to cut your storage pool space to the half to duplicate all the metadata+data needed to self-heal data...(not for metadata, obviously, since metadata gets duplicated 2/3 times even on a single disk with no data replication turned on)

If you have a single harddrive, then, yes, you will have to halve (or more) your storage, by setting copies=2. Without that, you don't have redundant storage to compare against.

But on multiple-harddrive systems, you configure the storage pool using mirror or raidz vdevs. Since pretty much everyone already does this using RAID, whether it be hardware or software, you're not "losing" anything.

How do you expect to have self-healing, without redundant storage? And why would you consider using redundant storage to be bad?

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