HP Smart Array P440ar Controller
c04346299 – DA – 15039 Worldwide — Version 1 — September 9, 2014
Online and high performance offline Rapid Parity Initialization (RPI)
Unlimited global online spare assignment
User selectable expand and rebuild priority
User selectable RAID level and stripe size
User selectable read and write cache sizes
Supports Predictive Spare Activation
Eight (8) SAS physical links equally distributed across 2 internal x4 Mini-SAS connectors
12Gb/s SAS (1200 MB/s theoretical bandwidth per physical lane) on ProLiant Gen9
x8 6Gb/s SAS physical links (compatible with 6Gb/s SATA)
2 GiBytes 72-bit wide DDR3-1866MHz flash backed write cache provides up to 12.8GB/s
maximum cache bandwidth
PCI Express Gen3 x8 link width
Read ahead caching
Write-back caching
Provides increased server uptime by providing advanced storage functionality:
Online RAID level migration between any RAID levels
Online stripe size migration
Online capacity expansion
Online logical drive extension
Online active drive replacement
Online drive firmware upgrade
Unlimited global online spare
Pre-Failure Warranty
The following features offer detection of possible failures before they occur, allowing preventive
action to be taken:
S.M.A.R.T. (Self Monitoring Analysis and Reporting Technology) was first developed by HP
which detects possible hard disk failure before it occurs, allowing replacement of the
component before failure occurs.
Drive Parameter Tracking monitors drive operational parameters, predicting failure and
notifying the administrator.
Dynamic Sector Repairing continually performs background surface scans on the hard disk
drives during inactive periods and automatically remaps bad sectors, ensuring data integrity.
Smart Array Cache Tracking monitors integrity of controller cache, allowing pre-failure
preventative maintenance.
Keeps data available and server running while a failed drive is being replaced; several fault tolerance
configurations are supported including:
RAID 6 (Advanced Data Guarding): Supported with a minimum of 4 drives. This allocates two
sets of parity data across drives. This level of fault tolerance can withstand a double drive
failure without downtime or data loss.
RAID 60: Supported with a minimum of 8 drives. This volume is composed of two or more RAID
6 sub-volumes (parity groups) where data is striped across each parity group as if it were a
single physical drive. Each RAID 6 parity group can sustain up to two drive failures without
incurring data loss.
RAID 5 (Distributed Data Guarding): Supported with a minimum of 3 drives. This allocates one
set of parity data across drives. This level of fault tolerance can withstand a single drive
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