Re: [OFFTOPIC] Mass storage prices and form factor (was: ISO to external SSD)
Stefan Monnier wrote:
>
> That makes 3½" form factor even more dead than I thought (two 4TB 2½"
> drives should offer better performance than one 8GB 3½" drive and use
> less space, not sure about power consumption).
Erm. You just doubled your failure rate. There are times when
that's worthwhile, but if you want performance, SSDs are a
better way of getting to it.
> I wonder what kind of drives are used nowadays in big datacenters (and
> whether the prices they pay for them looks anything like the ones
> above).
I think my company is in the medium-sized datacenter group. We
use 8-14TB 3.5" spinning disks at prices pretty similar to what
you've got above, and 0.5-8TB SSDs at prices... above what
you've got below, but not breathtakingly more expensive.
ext4 on MD RAID1 and 10, ZFS in equivalents.
> For completeness, here's the list for SSDs:
>
> ½TB $ 60 2½" SSD 120 $/TB
> 1TB $100 2½" SSD 100 $/TB
> 2TB $244 2½" SSD 122 $/TB
> 4TB $540 2½" SSD 135 $/TB
>
> so about 4x the price per TB (and here the linear price curve makes
> a lot more sense).
-dsr-
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