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Step 15
Turn on the power to the system.
Warning: Existing IR arrays will be imported into MR
arrays, and they cannot become IR arrays again.
It is a permanent migration.
S U P P O R T E D R A I D L E V E L S
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.
T E C H N I C A L S U P P O R T
See the Warranty and Support Information document for
information about the technical support available for this
product.
®
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.
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