Hardware RAID Level & Performance

[Henrique de Moraes Holschuh]

On Thu, 17 Feb 2005, Aleksandar Milivojevic wrote:
> Norman Zhang wrote:
> >Thanks for your explanation. How's this one
> >http://www.supermicro.com/products/accessories/addon/DAC-ZCRINT.cfm
> >
> >It uses Intel 80303 I/O processor boards? I'm planning to build my 
> >Cyrus-IMAPD on this HW.

Well, I have something like it, an Intel SRCZCR.  It is also a zero-channel
RAID adapter, and yes, it is a real honest hardware RAID, but it is not
PCI-X.

But it is a *piece* *of* *crap* performance-wise, and that's using U320 SCSI
drives on the host adapter.  So, it will work well if you don't need much
performance.  But otherwise, get something better.  Anything that hasn't got
NVRAM (64MB or more) and an on-card SCSI U160 or U320 controller is not
worth thinking about IMHO (for SATA that translates to on-card NCQ SATA
controllers, I suppose).

You will notice Intel itself stopped with this sillyness and their newer
zero-channel adapters feature 128MB of DDR333 RAM and a IOP-321 processor...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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