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Re: [linux-lvm] Does LVM have the same "Problems" like RAID 0(Stripping)?




-- Stefan Siefert <s siefert global-media de>


what happens if one of the physical devices of an LV gets damaged? Is the
whole LV gone (like on a RAID 0 (Stripping)) or are only those data gone
which where on the physical device?

If one of the PV's goes away then anything striped across it is lost. If you require a high-uptime system then a better approach is to use LVM on top of hardware RAID.

Mirroring the PV's gives higher uptime; RAID-5 or -S uses
less space at the expense of bad performance when a drive
goes out. Striping across mirrors is a nice way to aggregate
the space for good speed and availability.

--
Steven Lembark                               2930 W. Palmer
Workhorse Computing                       Chicago, IL 60647
                                           +1 800 762 1582



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