[Cialug] raid/nas

[Nathan C. Smith]

It's funny how many solutions for NAS/SAN support raid5 but only have a
single power supply.  I think NetApp were/are the ones who do it right.
 
-Nate
 
-----Original Message-----
From: John.Lengeling at radisys.com [mailto:John.Lengeling at radisys.com] 
Sent: Wednesday, August 31, 2005 9:56 AM
To: Central Iowa Linux Users Group
Subject: RE: [Cialug] raid/nas



No problems with any power supplies.   We are using dual power
supplies...doesn't make sense to purchase a reliable file server and not
purchase dual PS or to not to put it on UPS power. 

Have only had 1 drive failure over the past 8 years of using NetApp (across
4 filers and 2 different models).  Of course I don't have TBs of data.  We
are using their small filers in the 250-300G range.  We purchased these
filers to store the source code to our products (company jewels) so
reliability and data integrity are very important to us. 

Based on past experience with hardware based RAID cards (Dell PERC, AMI,
etc, etc), I wouldn't trust the company jewels to them...I have seen too
many blow up and needed to be recovered from backup.  NetApp measures their
availability of these filers from the installed base at 99.99% (<
53min/year) and >99,000 years for Mean Time to Data Loss (MTTDL).  See
http://www.netapp.com/tech_library/3065.html 

johnl 




"Nathan C. Smith" <smith at ipmvs.com> 
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08/31/2005 09:30 AM 


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have you had any trouble with power supplies on NetApp machines?  Or are all
yours dual power?  how do the drives stand up? 
  
-Nate 
-----Original Message-----
From: John.Lengeling at radisys.com [mailto:John.Lengeling at radisys.com] 
Sent: Wednesday, August 31, 2005 9:26 AM
To: Central Iowa Linux Users Group
Subject: Re: [Cialug] raid/nas


For the size that you are looking at, I think you should be looking at SAN
or NAS solutions instead of direct attached storage. 

I really like Network Appliance (www.netapp.com) they just run and run.
Average uptimes on these devices are in the order of 400-500 days.  Well
worth all the money for a NetApp. 
They support multiprotocols (CIFS, NFS,  HTTP, iSCSI, FiberChannel) 

johnl 



"n.d" <admin at c0wzftp.com> 
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08/30/2005 09:48 PM 



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[Cialug] raid/nas


	





anyone know some good raid controllers that work excellent in linux? i'm 
thinking serial ata before ide or eide. no scsi plz

i've never used raid before.  i'm looking to make a fileserver with 
~100-150tb of storage. also like to have some expandibility in the future.

NAS anyone?
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