Re: Recommended Hardware Raid Controllers

Mannr_at_uwaterloo.ca
Date: 07/22/04 

Date: 22 Jul 2004 03:45:10 -0400

"Steve Wolfe" <unt@codon.com> writes:

> > Can anyone tell me good/bad experiences with Raid controllers,
> >
> > in particular we are thinking about a 4 port 3Ware 7500-4LP series model.
>
> I've used an 8-port 3Ware card in a RAID 5 configuration, and the
> responsiveness under load was nowhere near as good as with software RAID-5.
> If the lack of booting directly to the RAID 5 is a concern, you could buy a
> cheap flash disk to use as your boot disk, save quite a bit of money over
> 3Ware's offerings, get better performance (the 3Ware cards don't generate
> parity anywhere near as fast as your host CPU will), and have just as much
> realistic safety.
>
> steve

Hi Steve,

I've got a 3Ware 8-port RAID controller. I've noticed a latency of say
1/2 sec every time I access the drive. Actually I notice it whenever
I access the drive after a certain amount of inactivity. I can't figure
it out. Is there some latency in the cache or something?

I'm thinking of moving over to software RAID. Just use the 3Ware are
an eight-port IDE controller. What a disappointment!

  Richard

Relevant Pages

  • Re: Recommended Hardware Raid Controllers
    ... "Steve Wolfe" writes: ... > responsiveness under load was nowhere near as good as with software RAID-5. ... I've got a 3Ware 8-port RAID controller. ... Is there some latency in the cache or something? ...
    (alt.os.linux)
  • Re: Newbie help
    ... On Tue, 21 Sep 2004 16:17:17 GMT, Steve wrote: ... >same thing (gather data from a web source as rapidly as possible and store ... Get lots of RAM. ... Use RAID 0 or RAID 1&0 for data, ...
    (microsoft.public.sqlserver.programming)
  • Re: How Many "Problems" Will Steve De Mena Discover After Installing 10.6.2 Update
    ... Steve de Mena wrote: ... I had to delete the RAID and re-create it and it worked fine again. ... The RAID, nor the drives, failed. ...
    (comp.sys.mac.advocacy)
  • Re: How Many "Problems" Will Steve De Mena Discover After Installing 10.6.2 Update
    ... Steve de Mena wrote: ... See, for instance, all of our towers boot from dual drive RAID 0 configurations, and before I switched to my current MacBook Pro, for several years both my personal and work machines were G5 towers with such configurations. ... Until I moved drives around recently I had a RAID-0 Startup Volume for about 3 years. ...
    (comp.sys.mac.advocacy)
  • Re: Unknown User Logon attempt
    ... I installed Adpatecs RAID management ... It is a browser base utility to manage your RAID. ... > Thanks a lot Steve for your help you definetly pointed me in the right ... >> it certainly looks like it is a local startup process. ...
    (microsoft.public.security)
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