troubleshooting Question

RAID Systems especially SX8000 RAID5

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InsightOceania asked on
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We have an SX8000, configured as RAID5. Two Promise Towers. The Promise towers are driven by a unix box running on a dell optiplex.  Its running red hat.  Linux has been configured to manage a dual network card for redundancy.  It has 2 disks, the second a replicate of the first.

My problem: Disk #7 failed on Promise2. (red led on HDD). I replaced the Maxtor 300GB ATA/133 HDD Maxline II with Maxtor Maxline III 250GB PATA/133 HDD Model 7L25ORO. No red lights, all green except for Disk #2 which had a yellow status led. LCD on Promise Tower said it was rebuilding the data. The level only reaches 85% build. Left system on throughout the night still 85% next morning. The Promise2 tower was not connected to the unix box during rebuild.

I am at a point of not knowing where to go from here. Can anyone advise action to take from here.
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