Re: [Xen-users] Xen and iSCSI

[Molle Bestefich <molle.bestefich@xxxxxxxxx>]

Markus Hochholdinger wrote:
> A little raw calculation:
>  - 1 TByte (1000 GByte) disk space on each storage server
>  - 1 GBit/s LAN (~ 100 MByte/s)
>  => complete resync will last about 3 hours

Just a FYI.

Newest versions of MD has "bitmap based intent logging", which should
reduce rebuild times for big arrays drastically.

> So i saw hardware raid controllers takeing longer for much lesser disk space!

After having used both, I trust MD over hardware controllers any day.
(Haven't actually tested which performed better, since both were
adequate for my needs at the time.)

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