Broadcom CacheVault Service Manual
CVPM02, CVPM05 Power Modules | CVFM04 Cache Module
MegaRAID® CacheVault™ Protection Products
User Guide
Version 1.0
Broadcom CVPM02-05-CVFM04-UG100
February 14, 2020
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CVPM02, CVPM05 Power Modules | CVFM04 Cache Module User Guide MegaRAID CacheVault Protection Products
Table of Contents
Chapter 1: Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Cache Backup Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 CacheVault Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2: Install the Cache Backup Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Attach the CVFM04 Module to the MegaRAID Controller and by Cable to a CVPM02 Module on a Remote Mount
Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.1 Front View and Back View of the CVFM04 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.2 Remove the MegaRAID Controller from the Host Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.3 Attach the CVFM04 Module Directly to the MegaRAID Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.4 Install the Clip on the Remote Mount Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.5 Attach the CVPM to the Clip on the Remote Mount Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.6 Connect the CVFM04 Module to the Remote CVPM02 Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.7 Install the MegaRAID Controller and Remote Mount Board in the Motherboard . . . . . . . . . . . . . . . . . . . . . 11
2.2 Attach a Remote CVPM05 Module by Cable to a MegaRAID Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.1 Connect the Remote CVPM05 Module to the MegaRAID Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 3: Monitor and Manage CacheVault Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Monitor CacheVault Module Information in StorCLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Monitor CacheVault Module Information with the HII Configuration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Handle and Dispose of CacheVault Power Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 4: CacheVault Module Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Version 1.0; February 14, 2020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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CVPM02, CVPM05 Power Modules | CVFM04 Cache Module User Guide MegaRAID CacheVault Protection Products
Chapter 1: Introduction
This guide documents the following Broadcom® MegaRAID® cache backup products used with MegaRAID SAS
high-performance SAS+SATA RAID controllers to protect cached data:
CacheVault™ flash module (CVFM)
–CVFM04
CacheVault power modules (CVPMs)
– CVPM02
– CVPM05
The memory modules protect the integrity of cached data on MegaRAID controllers by offloading the cached data to
nonvolatile flash memory if a complete AC power failure, or a brief power outage, occurs. These products provide an
alternative to using an uninterruptible power supply (UPS), or a second level of fault tolerance when used with a UPS.
This guide describes the backup products, including installation instructions and technical specifications.
1.1 Cache Backup Benefits
The cache memory available on MegaRAID controllers improves overall system performance because writing data to the
controller's cache memory is much faster than writing it to a storage device. Write ope rations appea r to complete quickly at
the software application level. The MegaRAID controller writes the cached data to the storage device when system activity
is low or when the cache gets full.
The risk of using write-back cache is that the cached data can be lost if the AC power fails before the data is written to the
storage device. To eliminate this risk, the MegaRAID con troller supports an energy backup solutio n to ensure no data is lost
during power or system failure. The cached data is offloaded to flash, which is restored when power resumes.
1.2 CacheVault Modules
CacheVault technology consist of two primary items. The CVPM is an ultracapacitor -based energy source that powers the
critical adapter components in the event of a power loss, long enough to offload cached data to the nonvolatile flash memory
on the CVFM. The DRAM contents are restored to the CVFM the next time the MegaRAID controller is powered, and the
cached data is written to the storage devices. The CVPM is also sometimes referred to as a supercapacitor or flash backup
unit (FBU).
CacheV ault flash technology virtually eliminates the hardwa re maintenance associated with batteries, offers lower total cost
of ownership over the life of the controller , and provides more environmentally friendly cache protection, all while maintaining
optimal RAID performance.
The following table describes the cache protection options for each MegaRAID adapter.
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CVPM02, CVPM05 Power Modules | CVFM04 Cache Module User Guide MegaRAID CacheVault Protection Products
Table 1 MegaRAID CacheVault Flash Modules Matrix
MegaRAID
Adapter
9560-16i
9560-8i
9580-8i8e
9460-16i
9460-8i
9480-8i8e
9365-28i
9361-24i
9361-16i
9380-8i8e
9361-8i
9361-4i
9380-8e
9380-4i4e
Adapter
Controller
SAS3916
or
SAS3908
SAS3516
or
SAS3508
SAS3324
or
SAS3316
SAS3108 CVM02 CVFM04 Cache protection components are sold
CacheVault Kit
— NAND flash is local on
— NAND flash is local on
— NAND flash is local on
CacheVault Memory
Module
adapter.
adapter.
adapter.
Module Information
Separate flash module not required. The
CVPM or supercapacitor provides the
CacheVault technology.
as a kit, including the flash module
daughter card and the supercapacitor.
CacheVault Power
CVPM05 (FBU345)
CVPM05 (FBU345)
CVPM02 (FBU02)
CVPM02
The modules are described in the following list:
CVPM02 module
A supercapacitor pack installed on a remote mount board or locally mounted in the system, and connects remotely
by cable to a CVFM or a MegaRAID controller.
Module
CVPM05 module
A supercapacitor pack installed on a remote mount board or locally mounted in the system, and connects remotely
by cable to a MegaRAID controller.
CVFM04 module
An ONFI flash module that attaches to a MegaRAID controller and connects by cable to a CVPM02 module installed
on a remote mount board.
ATTENTION: Y ou cannot hot plug a CVPM. Removing or insert ing a CVPM with the server powered on damages the board
and the supercapacitor functionality. To attach a CVPM to, or remove a CVPM from, a controller, you must
fully power down the controller before you attach the module to, or remove the module from, its mating
connector.
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CVPM02, CVPM05 Power Modules | CVFM04 Cache Module User Guide MegaRAID CacheVault Protection Products
Chapter 2: Install the Cache Backup Products
This chapter explains how to connect the CacheVault module to back up power units.
CAUTION! Electrostatic discharge (ESD) can damage the modules and the MegaRAID controllers. Always ground yourself,
and use a ground strap before you touch the MegaRAID controller or the module. Perform all installation work
at an ESD-safe workstation that meets the requirements of EIA-625, Requirements for Handling Electrostatic
Discharge Sensitive Devices. Follow the ESD-recommended practices in the latest revision of the Inter-Process
Communication (IPC) IPC-A-610, Acceptability of Electronic Assemblies, standard.
If screws are required, use an ESD-safe Phillips screwdriver to install them. Be sure the screwdriver is centered in the screw
to avoid damaging the screw head. If you exceed the maximum torque specification, you might damage the board,
connectors, or screws, and you void the board warranty.
NOTE: To protect your data, set the MegaRAID controller Write Policy to write-through until the battery unit is charged.
After the battery unit charges, you can change the Write Policy to write-back to take advantage of data caching
performance improvements.
See Section 3.3, Handle and Dispose of CacheVault Power Modules, for information a bout how to ha ndle and dispo se of a
CVPM properly.
See Chapter 4, CacheVault Module Specifications, for technical specifications.
2.1 Attach the CVFM04 Module to the MegaRAID Controller and by Cable to a CVPM02 Module on a Remote Mount Board
This section describes how to attach the CVFM04 module directly to your MegaRAID controller, and then connect the
CVFM04 module by cable to a CVPM02 module on a BBU-BRACKET-05 remote mount board (sold separately). The
CVFM04 module attaches directly to the MegaR AID co ntr o ller, and the CVPM02 module fits on a clip that attaches to the
remote mount board. The MegaRAID controller and the remote mount board are then installed in PCIe slots on
the motherboard. The CVPM02 module can mount locally in the system as long as sufficient airflow maintains a proper
operating temperature range. See Chapter 4, CacheVault Module Specifications, for airflow requirements.
The CVFM04 module and the CVPM02 module are used on the following MegaRAID controllers:
MegaRAID SAS 9361-4i
MegaRAID SAS 9361-8i
MegaRAID SAS 9380-4i4e
MegaRAID SAS 9380-8e
Perform the following tasks to attach the CVFM04 module directly to your MegaRAID controller, and then by cable to the
CVPM02 module on a remote mount board.
1. Remove the MegaRAID controller from the host system. See Section 2.1.2, Remove the MegaRAID Controller from the
Host Computer.
2. Attach the CVFM04 module directly to the MegaRAID controller. See Section 2.1.3, Attach the CVFM04 Module Directly
to the MegaRAID Controller.
3. Install the clip on the remote mount board. See Section 2.1.4, Install the Clip on the Remote Mount Board.
4. Attach the CVPM02 module to the clip. See Section 2.1.5, Attach the CVPM to the Clip on the Remote Mount Board.
5. Connect the CVFM04 module to the remote CVPM02 module. See Section 2.1.6, Connect the CVFM04 Module to the
Remote CVPM02 Module.
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