On Thursday, December 01, 2011 10:08:27 AM Craig White wrote:
> I think the actual controller might make a difference and also details such as whether/how much write back cache was available and also, which RAID level would likely be significant too. Almost guessing that you were talking about a PERC 3/Di.
Hmmm, no, I think it's a PERC 4 of some series. I don't recall if it's a 4e or a 4Di. It's built in to the PCI-X riser and it's dual channel, though. Probably an e.
256MB of cache if I remember correctly; using the service tag # and checking Dell's original system config tool tells me that's correct (the config tool just says a RAID key installed, and documentation for a PERC 4e/Di/Si; I don't recall if the e was the on-riser or if the i was right off hand, and the config tool doesn't tell me either).
Six drives: two 72GB 15k in RAID 1, four 146GB 15k in RAID5. MDRAID beat the PERC4 on both logical drives, set up as identically as possible.
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