Storage Features; Storage Configurations And Raid - HP Z840 Workstation Technical White Paper
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- Maintenance and service manual (132 pages) ,
- User manual (68 pages)
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Technical white paper | HP Z840 Workstation
Storage configurations and RAID
The HP Z840 Workstation includes a 2 port, 6 Gb/s Intel® SATA RAID controller
(SATA) and a secondary 4 port, 6 Gb/s Intel® SATA RAID controller (sSATA). The
HP Z840 additionally includes an 8 port 6 Gb/s LSI® SAS RAID controller
Storage Features
Controller interfaces and supported drive types
The controllers support the following drive types and max link speeds:
Controller
SATA
sSATA
SAS
* RAID arrays can only be created with drives of the same interface type. Mixed SAS and SATA RAID configurations are not allowed.
** Some encryption software used with SED drives requires that SATA emulation mode be set to AHCI.
RAID Levels
The RAID levels supported are shown in the table below:
Controller
SATA
sSATA
SAS
Option ROM Launch Policy
In the Pre-OS environment, HP Workstations can use either Option ROM (OROM) or a Unified Extensible Firmware
Interface (UEFI) driver for configuration and management of the RAID controllers. The default shipping configuration is
set to All Legacy OROM. This can be changed in BIOS Setup under Advanced > Option ROM Launch Policy. Select the
desired Option ROM Launch Policy from the pull down menu.
The OROM or UEFI driver is not available when the SATA or sSATA controllers are set to AHCI.
When the Option ROM Launch Policy is set to All Legacy, the SATA and sSATA OROM will only display at power on if
there are two or more RAID capable devices attached to the controller, or a single device is attached that contains RAID
metadata. In the later case, the OROM will show that the RAID is failed or degraded.
The LSI SAS OROM will always display when the Option ROM Launch Policy is set to All Legacy.
When the Option ROM Launch Policy is set to UEFI, the legacy OROM will not display and management of RAID can be
performed in 3rd Party Option ROM Management from the BIOS Startup Menu.
Controller Enable/Disable
The SATA, sSATA, and SAS controllers can be Disabled or Enabled individually from the BIOS menu under Advanced
> Device Configurations. Select Enable or Disable from the pull down menu for the controller that you would like to
Enable or Disable.
Number of ports
Max link speed
2
6 Gb/s
4
6 Gb/s
8
6 Gb/s
Number of ports
2
4
8
Interface type
Drives supported**
SATA
SSD, SED, HDD, and ODD
SATA
SSD, SED, HDD, and ODD
SATA or SAS*
SSD, SED, HDD, and ODD
RAID levels
Max RAIDs
0, 1
1
0, 1, 5, 10
2
0, 1, 1E, 10
2
11
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