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It does depend on what you want to do with the server. If there is a machine that is critical with littler or no down time, then split the backplane using dual processors, one to be RAID 1 and the other to be RAID 5. If it is mission critical with no down time, then RAID 10 would be appropriate. ________________________________ From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Arthur H. Shank II (Chip) Sent: Friday, June 24, 2005 10:35 AM To: [log in to unmask] Subject: [MSUNAG] PERC Card Clarification Does anybody have a strong opinion on the benefits/differences to the following PERC cards, that can be ordered on DELL Poweredge Servers? We will be running RAID 5... and currently I was just going to stick with the EMBEDDED perc, as I have done in the past.... I don't see any real advantage to having the extra CARD??? 1. Embedded PERC4ei 2. PERC4/DC card 3. On-Board RAID 5, Split Backplane Thanks, Chip ______________________________________ Arthur H. Shank II (Chip) Michigan State University Department of Psychology Systems Programmer & Administrator 312 Psychology Bldg. 517-353-0000