.The HP Smart Array P420 Controller is an enterprise-class 6 Gb/s controller that provides improved performance, internal scalability and lower maintenance. P420 controller is ideal for RAID 0/1, 1+0, 5, 50, 6 & 60 and additional advanced features are upgradable by Smart Array Advanced Pack. P420 delivers increased server uptime by providing advanced storage functionality, including: online RAID level migration with flash-backed write cache (FBWC), global online spare, and pre-failure warning.

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