Hi all, given the configuration below:
* 8 x 1TB HDDs
* 2 x 2TB HDDs
On which I currently have:
* (10 x 1TB) RAID6 - persistent storage
* (2 x 1TB) system / temporary storage etc.
I want to replace the 1TB drives for 2TB ones on an as-needed basis,
what strategy would you recommend?
1. If I moved to 2TB RAID6 members (using RAID0 on the 1TB drives),
I would need to replace two of the drives just to match current
capacity. Each next 2TB drive would get me 1TB additional
capacity (but actually I'd need to replace two to gain
anything). That sounds to be most future-proof, but most
expensive.
2. If I moved to 2TB RAID5 members, that would reduce redundancy
but replacing just two would gain me 2TB capacity. Most of the
above still applies.
3. If I kept to 1TB RAID6 (two on the 2TB drives), I would reduce
the redundancy to just one drive if it was the 2TB drive that
failed, but each new drive would gain me 1TB capacity and I only
need to replace one-by-one. This sounds like the cheapest, but
worst possible approach.
So, am I missing something? What do you think?
--
Michał (Saviq) Sawicz <michal@xxxxxxxxxx>
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