HPE DL325 Gen10 User Manual

QuickSpecs

HPE Smart Array P841 Controller

Overview

1

HPE Smart Array P841 Controller

The
enterprise
tower servers. It features
functionality, including online RAID level migration (between any RAID levels) with
online spare, and pre-failure warning. This controller includes transportable FBWC allowing the data in the cache to be migrated to
a new controller.

The Gen9 family of controllers supports the
controllers are supported without needing additional backup power sources for each controller, resulting in simple upgrade
process.

What's New

• Supports HPE D6020 Disk Enclosures

HPE Smart Array P841
Controller

HP Smart Array P841/4GB FBWC 12Gb 4

HPE Smart Array P841 Controller is a full height, PCIe3 x8, 12Gb/s Serial Attached SCSI (SAS) RAID controller that provides

-class storage performance, increased external scalability, and data protection for select HPE ProLiant Gen9 rack and
sixteen external physical links and delivers increased server uptime by providing advanced storage

4GB flash back write cache (FBWC), global

HPE Smart Storage Battery. With HPE Smart Storage Battery, multiple Smart Array

Models

NOTE: HPE Smart Array P841/4GB FBWC controller option kit does not include the HPE Smart Storage Battery the backup

power source necessary to protect the data on the Flash-backed Write Cache. HPE Smart Storage Battery is an item that
has to be purchased separately if this is the first P-series Smart Array controller on your Gen9 server.

-ports Ext SAS Controller 726903-B21

Page

QuickSpecs

HPE Smart Array P841 Controller

Standard Features

Page 2

Key Features

o

Ports

Performance

Online Management
Features

• User selectable expand and rebuild priority

• Storage interface (SAS/SATA)

o 16 physical links across 4 x4 external ports
o 12Gb/s SAS, 6Gb/s SATA technology
o Mix-and-match SAS and SATA drives to the same controller
o Support for SAS tape drives, SAS tape autoloaders and SAS tape libraries

• 4 GiBytes Flash-Backed Write Cache (FBWC)

• PCI Express Gen3 x8 link

• RAID 0, 1, 10, 5, 50, 6, 60, 10 ADM (Advanced Data Mirroring)

• RAID or HBA mode

• Legacy and UEFI boot operation

• Up to 200 physical drives

• Up to 64 logical drives

• Up to 8 daisy chained HPE D3600 Disk Enclosure and HPE D3700 Disk Enclosure in dual

domain configuration

• HPE SmartCache (license included)

• HPE Secure Encryption (optional license)

• HPE SSD Smart Path

• VMware Virtual SAN certified

• Rapid Parity Initialization (RPI)

• Rapid rebuild

• Drive Erase

• Performance Optimization-Degraded Reads and Read Coalescing

• Power Efficiency

• Seamless upgrades to and from other HPE Smart Array controllers

• Recovery ROM to protect against controller ROM corruption

• Full-height, half-length standard PCI Express plug-in card

Dimension (excluding bracket): 7.5 in x 9.5 in x 2.25 in (19.05 cm x 24.13 cm x 5.72 cm)

• External: 16 SAS/SATA physical links across 4 x4 port

• 12Gb/s SAS (1200 MB/s theoretical bandwidth per physical lane)

• 6Gb/s SATA (600 MB/s theoretical bandwidth per physical lane)

• PCI Express Gen3 x8 link width

• 4 GiBytes 72-bit wide DDR3-1866 Flash Back Write Cache provides up to 14.9GB/s maximum

cache bandwidth

• Read ahead caching

• Write-back caching

• Online array expansion

• Online capacity expansion

• Online logical drive extension

• Online RAID level migration

• Online stripe size migration

• Online mirror split, recombine, and rollback

• Online active drive replacement

• Online drive firmware upgrade

• Online and high performance offline Rapid Parity Initialization (RPI)

• Unlimited global online spares assignment

QuickSpecs

HPE Smart Array P841 Controller

Standard Features

Page 3

Fault Prevention

The following features offer detection of pos
to be taken:

Fault Recovery

Minimizes downtime, reconstructs data, and facilitates a quick

corruption. A new version of firmware can be flashed to the ROM while the controller maintains

the firmware becomes corrupt, the controller will

HPE SmartCache

The
environment that caches the most frequently accessed data ("hot" data) onto lower latency SSDs to
dynamically accelerate application workloads. The
sup
supported SSD as an accelerator.
Storage Administrator (

For more information please visit: http://www.hpe.com/servers/smartcache

HPE Secure Encryption

HPE
servers that protects sensitive, mission critical data. This is an enterprise
data at rest on any bulk storage attached to the
cache memory of the controller.
encryption enablement (see

The solution is available for both local and remote key management mode deployments. Local Key
Management Mode
controller that is managed by the user. Remote Key Management Mode is for enterprise wide
deployments from just a few servers to thousands of servers

For more information

http://www.hpe.com/servers/secureencryption

• User selectable RAID level and stripe size

• User selectable read and write cache sizes

• Supports Predictive Spare Activation

sible failures before they occur, allowing preventive action

• S.M.A.R.T.: Self Monitoring Analysis and Reporting Technology first developed at HPE 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.

• Recovery ROM: This feature provides unique redundancy that protects from a ROM image

recovery from drive failure

the last known working version of firmware. If
revert back to the previous version of firmware and continue operating. This reduces the risk
of flashing firmware to the controller.

• On-Line Spares: There is no limit to the number of spare drives that can be installed prior to

drive failure. If a failure occurs, recovery begins with an On-Line Spare and data is
reconstructed automatically.

• DRAM ECC corrects against single bit data and address corruption.

HPE SmartCache feature is a controller-based read and write caching solution in a DAS

HPE SmartCache architecture is flexible and

ports any HPE ProLiant Gen9 supported HDD for bulk storage and any HPE ProLiant Gen9

HPE SmartCache is deployed and managed using the HPE Smart

HPE SSA). HPE SmartCache license comes standard with the P841 controller.

Secure Encryption is a Smart Array controller-based data encryption solution for ProLiant Gen9

HPE Smart Array controllers including data on the

HPE Secure Encryption is an optional license per server requiring

Related Options for more information on the license).

is focused on single server deployment where there is one Master key per

.

on please visit:

.

-class encryption solution for