IBM Redbooks ServeRAID-MR10k User manual

®
Thank you for purchasing the ServeRAID-MR10k SAS/SATA
Customized Enabler DIMM. This Serial Attached SCSI
(SAS)/Serial ATA (SATA) product is a LSI1078ROC-based
PCI Express RAID DIMM. Please take a few minutes to read
this quick installation guide before installing the ServeRAID-
MR10k SAS/SATA Customized Enabler DIMM.
If more information is needed about any topic covered in this
quick install guide, refer to the other documents on the
ServeRAID-MR Support CD. The CD contains utility
programs, device drivers for various operating systems, and
the following documentation:
•ServeRAID-MR10k User’s Guide
•ServeRAID-MR10 Software User’s Guide
•ServeRAID-MR10 Device Driver Installation User’s Guide
OVERVIEW OF THE ServeRAID-MR10k
SAS/SATA CUSTOMIZED ENABLER DIMM
The ServeRAID-MR10k SAS/SATA Customized Enabler
DIMM is designed for use in the System X 3950 M2 and
3850 M2 servers. The ServeRAID-MR10k DIMM offers a
flexible RAID-on-motherboard (ROMB), direct-attached
storage (DAS) solution based on the LSI1078ROC.
Using the ServeRAID-MR10k DIMM enables the system to
operate in MegaRAID (MR) mode, which uses the MR stack,
and the MR management and configuration tools. If the
ServeRAID-MR10k DIMM is not installed in the system, the
LSI1078ROC operates in the Integrated RAID (IR) mode,
which supports RAID levels 0 and 1.
The ServeRAID-MR10k SAS/SATA Customized Enabler
DIMM consists of two pieces:
•A Customized 240-pin DIMM module that includes a
RAID key, which contains hardware needed to use
advanced MegaRAID features
•A remote intelligent transportable battery backup unit
(iTBBU)
Figure 1 displays the Customized 240-pin DIMM module that
contains the RAID key. The J1 connector on the back of the
DIMM connects by cable to the remote iTBBU.
Figure 1 ServeRAID-MR10k DIMM Module
The iTBBU protects the integrity of the cached data on the
ROMB controller by providing backup power if there is a
complete AC power failure or a brief power outage. For more
information about the battery, refer to the ServeRAID-MR10k
User’s Guide on the ServeRAID-MR Support CD.
Figure 2 displays the iTBBU that connects by cable to the
DIMM module.
Figure 2 ServeRAID-MR10k iTBBU
Attention: The battery in the iTBBU must charge for at least
six hours under normal operating conditions. To
protect your data, the firmware sets the Write
Policy to write-through until the battery unit is
sufficiently charged. When the battery is charged,
the RAID DIMM changes the Write Policy to
write-back to take advantage of the performance
benefits of data caching.
85023-00
J1 on back
of board
85023
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01
ServeRAID-MR10k
Quick Install Guide

2 of 3
ServeRAID-MR10k SAS/SATA DIMM
INSTALLATION
Figure 3 shows the installation of the ServeRAID-MR10k
SAS/SATA Customized Enabler DIMM.
Figure 3 Installation of the ServeRAID-MR10k
SAS/SATA DIMM
Perform the following steps to install the ServeRAID-MR10k
SAS/SATA Customized Enabler DIMM.
Step 1 Read the safety information that begins in the
preface and the installation guidelines in this
section.
Step 2 Turn off the server and peripheral devices, and
disconnect the power cords and all external
cables as necessary to replace the device.
Important: When handling static-sensitive devices, take
precautions to avoid damage from static
electricity.
Step 3 Remove the server cover.
Step 4 Remove the divider that contains the battery
holder from the server.
Step 5 Open the retaining clip on each end of the
connector.
Step 6 Touch the static-protective package that contains
the DIMM to any unpainted metal surface on the
outside of the server; then, remove the DIMM
from the package.
Step 7 Turn the DIMM so that the keys align correctly
with the slot.
Step 8 Insert the DIMM into the connector by aligning
the edges of the DIMM with the slots at the ends
of the connector.
Important: Incomplete insertion might cause damage to the
server or the DIMM.
Step 9 Firmly press the DIMM straight down into the
connector by applying pressure on both ends
simultaneously.
The retaining clips snap into the locked position
when the DIMM is seated in the connector.
Step 10 Install the iTBBU in the divider that contains the
battery holder.
Step 11 Install the divider that contains the iTBBU holder
in the server.
Step 12 Route the iTBBU cable through the cable routing
guides on the divider to the DIMM.
Step 13 Insert the battery pack harness at the end of the
cable into the J1 connector on the backside of the
DIMM.
The installed ServeRAID-MR10k SAS/SATA
Customized Enabler DIMM is shown in Figure 4.
Figure 4 ServeRAID-MR10k Installed in a System
Step 14 Reinstall the server cover and reconnect the
power cords.
Attention: Back up your data before you change your
system configuration. Otherwise, you might lose
data.
iTBBU
RAID
DIMM
Battery
cable
Battery
cable
connector
Cable
guide Cable
guide
85023-05
Edge of
Motherboard
Edge of
Motherboard

IBM P/N: 43W9446
First Edition (November 2007)
© Copyright International Business Machines Corporation 2007.
All rights reserved.
®
US Government Users Restricted Rights – Use, duplication or disclosure restricted
by GSA ADP Schedule Contract with IBM Corp.
LSI, the LSI logo design, and MyStorage are trademarks or registered trademarks
of LSI Corporation. All other brand and product names may be trademarks of their
respective companies.
Step 15 Turn on the power to the system.
SUPPORTED RAID LEVELS
The ServeRAID-MR10k SAS/SATA Customized Enabler
DIMM supports disk arrays using the following RAID levels:
•RAID 0 (Data Striping): Data is striped across all disks
in the array, enabling fast data throughput. There is no
data redundancy. All data is lost if any disk fails.
•RAID 1 (Disk Mirroring): Data is written simultaneously
to two disks, providing complete data redundancy if one
disk fails. The maximum array capacity is equal to the
available size of the smaller of the two hard drives.
•RAID 5 (Disk Striping with Distributed Parity): Data is
striped across all disks in the array. Part of the capacity
of each disk stores parity information that reconstructs
data if a disk fails. Provides good data throughput for
applications with high read request rates.
•RAID 6 (disk striping with distributed parity across
two disks): Data is striped across all disks in the array
and two parity disks are used to provide protection
against the failure of up to two physical disks. In each row
of data blocks, two sets of parity data are stored.
•RAID 10 (RAID 1 and RAID 0 in Spanned Arrays): Uses
mirrored pairs of disks to provide complete data
redundancy. Provides high data throughput rates.
•RAID 50 (RAID 5 and RAID 0 in Spanned Arrays): Uses
both parity and disk striping across multiple disks to
provide complete data redundancy. Provides high data
throughput rates.
•RAID 60 (RAID 6 and RAID 0 in spanned arrays): RAID
60 uses both distributed parity across two parity disks and
disk striping across multiple disks to provide complete
data redundancy. RAID 60 provides high fault tolerance.
TECHNICAL SUPPORT
See the Warranty and Support Information document for
information about the technical support available for this
product.
Warning: Existing IR arrays will be imported into MR
arrays, and they cannot become IR arrays again.
It is a permanent migration.