Online Management
Online ManagementOnline Management
Online Management
Features
FeaturesFeatures
Features
Online array expansion (with BBWC or FBWC)
Online Advanced Capacity Expansion (with FBWC and Smart Array Advanced Pack 2.0 upgrade)
Online logical drive extension (with FBWC)
Online RAID Level Migration (with FBWC)
Online Stripe Size Migration (with FBWC)
Offline Mirror splitting and recombining (with FBWC and Smart Array Advanced Pack upgrade)
Unlimited global online spare assignment
User selectable expand and rebuild priority
User selectable RAID level and stripe size
User selectable read and write cache size ratio
Ports
PortsPorts
Ports
Eight (8) SAS physical links distributed across 2 external x4 miniSAS connectors.
Performance
PerformancePerformance
Performance
HP's High Performance Architecture sets new boundaries of industry performance expectations!
Second Generation 6Gb/s SAS (600MB/s bandwidth per physical link)
x8 6Gb/s SAS physical links (compatible with 3Gb/s SATA)
cache upgradeable to 2GB 72-bit wide DDR3-1333MHz flash backed write cache provides up to
4.2 GB/s maximum bandwidth
Write-back caching (with FBWC)
Native Command
Native CommandNative Command
Native Command
Queuing
QueuingQueuing
Queuing
Native Command Queuing (NCQ) is a technology designed to increase performance of SATA hard disk
drives by allowing the individual hard disk to internally optimize the order in which received read and
write commands are executed. This can reduce the amount of unnecessary going back-and-forth on the
drive's heads, resulting in increased performance for workloads where multiple simultaneous read/write
requests are outstanding, most often occurring in server or storage-type applications. Without NCQ the
drive has to process and complete one command at a time. For NCQ to be enabled, it must be
supported and turned on in the controller and in the hard drive itself.
Capacity
CapacityCapacity
Capacity
Given the increasing need for high performance and rapid capacity expansion, the SA-P421 offers:
Up to 400TB of external storage per PCI slot with 8x HP D2600 Disk Enclosures and 200 x2 TB
3.5" SAS hard drives
Up to 600TB of external storage per PCI slot with 8x HP D2600 Disk Enclosures and 96 x 3TB
3.5" SATA MDL hard drives
Up to 180TB of external storage per PCI slot with 8x HP D2700 Disk Enclosures and 200 x
900GB SFF SAS hard drives
Up to 200 TB of external storage per PCI slot with 8x HP D2700 Disk Enclosures and 200 x 1TB
SFF SATA hard drives
NOTE:
NOTE:NOTE:
NOTE:
Support for greater than 2TB in a single logical drive.
QuickSpecs
HP Smart Array P421 Controller
HP Smart Array P421 ControllerHP Smart Array P421 Controller
HP Smart Array P421 Controller
Standard Features
DA - 14229 North America — Version 3 — March 15, 2012
Page 3
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