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QuickSpecs
Standard Features
Management Features
Management Features
Management Features
Management Features
Ports
Ports
Ports
Ports
Performance
Performance
Performance
Performance
Native Command
Native Command
Native Command
Native Command
Queuing
Queuing
Queuing
Queuing
Dual Domain Support
Dual Domain Support
Dual Domain Support
Dual Domain Support
Capacity
Capacity
Capacity
Capacity
Online array expansion (with BBWC upgrade)
Online logical drive extension (with BBWC upgrade)
Online RAID level migration (with BBWC upgrade)
Online strip size migration (with BBWC upgrade)
Offline Mirror splitting and recombining
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
Eight (8) SAS physical links distributed across 2 internal x4 wide port connectors.
HP's High Performance Architecture sets new boundaries of industry performance expectations!
3Gb/s SAS (300MB/s bandwidth per physical link)
x8 3Gb/s SAS physical links (compatible with 1.5G SATA)
256 MB 40-bit wide DDR2-533MHz cache upgradeable to 512 MB 72-bit wide DDR2-533MHz
battery-backed cache provides up to 4.2 GB/s maximum bandwidth
x8 2.5G PCI Express host interface provides 2 GB/s maximum bandwidth
440 PowerPC Processor
Read ahead caching
Write-back caching (with battery-backed write cache upgrade)
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.
NOTE:
NOTE:
NOTE:
NOTE: Please see the SATA Hard Drive QuickSpecs for specific SATA hard drive capacities that support
NCQ:
http://h18000.www1.hp.com/products/quickspecs/11940_div/11940_div.html
Dual domain SAS creates redundant pathways for external drives from servers to storage devices. The
redundant paths created by these configurations reduce or eliminate single points of failure within the
storage network. This provides increased levels of high availability with redundant paths from the
controller to the drives. Dual domain SAS implementations make it possible to tolerate host bus adapter
(HBA) or controller failure, external cable failure, expander failure, cable pulls, expander failure and
failure in a spanned disk (JBOD) environments.
Given the increasing need for high performance and rapid capacity expansion, the SA-P400 Controller
offers:
Up to 38TB of total storage with 38 x 1TB 3.5" SATA MDL HDD
DA - 12400
Worldwide — Version 32 — January 23, 2012
HP Smart Array P400 Controller
HP Smart Array P400 Controller
HP Smart Array P400 Controller
HP Smart Array P400 Controller
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