Re: Areca SATA cards
Soenke von Stamm wrote:
with 4 discs in raid5. Worse than a single disc does. I've had the
card replaced - no joy.
No wonder, old CPU. That one was known to be slow,
The question is *how* slow? I'm getting 6MB/s sustained write to the
raid. The discs are Seagate 160GB SATA 7200rpm NCQ 8MB cache models.
Each on their own sustains around 30MB/s sustained write.
For comparitive testing, I put two drives on the onboard VIA based SATA
controllers, and two on a PCI card with Sil_3112a chipset (the same
chipset that the LSI card use for IO control, btw), and made a kernel
based raid-5 over all four. This config gave me about 21MB/s sustained
write, with a system load of about 2.0 (where writing to the LSI gave me
I don't expect the raid-5 set to be super fast, but it's got to be able
to handle at least 25-30MB/s as this is for a backup server that has to
receive a fairly large (and growing) amount of data on a daily basis,
via gigabit LAN.
Unfortunately 3ware doesn't have a local distributier (South Africa),
and I would prefer to buy a card somewhere were I can take it back
within a day, should I need to.
Thanks for the replies