Re: mdadm usage

[deloptes <deloptes@gmail.com>]

Andy Smith wrote:

> That is a really strange comment to me. No SSDs have batteries.
> Almost no RAID cards have batteries anymore. Supercapacitors have
> obsoleted the battery for such purposes. All SSD power loss
> protection is supercaps. And if you try to buy a modern RAID card
> with a BBU you will mostly just find cards with supercaps instead.
> But OP was asking about SSDs not RAID cards so even that nuance
> doesn't make much sense.
> 
> But okay, your SSD doesn't have pink elephants either. Samsung can
> dance around that fact all they want.

I have LSI controllers that support SATA II. This is a custom build home
server (small business server) one friend assembled for me 8y ago.
It fits my needs perfectly well. I deliberately did not buy a server as they
consume much more power. This one is running at 70-80Watt when normal and
100-120 when for example compiling something. Also noise factor is very low
compared to a real server. Of course there are limits
(memory/CPU/periferals). The machine is on UPS - I don't care about tantal
super caps. 
Each LSI card has a 6 bay cage attached and I have raided 6x2TB WD RED
spinning discs (for data) and 2x1TB WD RED spinning discs (for OS)

I somehow can not convince myself that I need to replace any of these with
SSDs.
I don't want the cheapest but also not unnecessary expensive drives, I just
find it hard to evaluate which drives are reliable.

I saw there are 1TB WD RED SSDs targeting NAS for about €120,-
 WESTERN DIGITAL WD RED SA500 NAS 1TB SATA (WDS100T1R0A)