John Andersen wrote:
On 07/10/2017 02:43 AM, Per Jessen wrote:
Offloading to hardware is always about speed and less load on the CPU.
And not something you really have to be concerned with any more. When we were doing raid arrays on a 386, sure.
The general principle still holds - not just for RAID, but also for network and iSCSI. My Proliant servers even have a space for a cache card for the hardware assisted 10GigE interfaces. iSCSI is often offloaded to interfaces with dedicated hardware or even dedicated cards.
But unless you are paying BIG bucks for a raid controller, software raid will outperform hardware raid.
There are situations where swraid won't suffice. When you need more than the usual 4-6 drives for instance, you'll need separate controllers anyway. I would still bet hardware assist is faster for e.g. RAID6, maybe also RAID5. -- Per Jessen, Zürich (21.9°C) http://www.dns24.ch/ - free dynamic DNS, made in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org