Advertisement
QuickSpecs
Standard Features
Availability
Fault Prevention
Fault Tolerance
Provides increased server uptime by providing advanced storage functionality:
Online RAID level migration between any RAID levels (with FBWC )
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 first developed at HP detects
possible hard disk failure before it occurs, allowing replacement of the hard drive before a real
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 failure without
downtime or data loss.
RAID 50: Supported with a minimum of 6 drives. This volume is composed of two or more RAID 5
sub-volumes (parity groups) where data is striped across each parity group as if it were a single
physical drive. Each RAID 5 parity group can sustain a single drive failure without incurring data loss.
RAID 1 & 10 (Drive Mirroring): Supported with a minimum of 2 drives. This allocates half of the drive
array to the data and the other half to the mirrored data, providing two copies of the data.
RAID 1 ADM & 10 ADM (Advanced Data Mirroring): Supported with a minimum of 3 drives. RAID 1
ADM creates redundant copies of the data using 3 drives. RAID 10 ADM stripes data across two or
more sets of RAID 1 ADM volumes. This level of fault tolerance can withstand a double drive failure
within a RAID 1 ADM volume without downtime or data loss.
DA - 14228 North America — Version 13 — September 13, 2013
HP Smart Array P420 Controller
Page 4
Advertisement
