IBM 71413SU Technical Reference - Page 31

A RAID array created with the SAS LSI 1078 can be migrated for use with the ServeRAID-MR10k, but the reverse is not possible. This means that if you create RAID-0 and RAID-1 arrays using the onboard LSI 1078 Integrated RAID controller and later install a ServeRAID-MR10k, you will be given the option to convert those arrays to the format used by the MR10k. However, if you wish to later remove the MR10k, you must first save all your data because the data in those arrays will be inaccessible by the LSI 1078 Integrated RAID controller. For more detailed information, refer to Chapter 3 of ServeRAID-MR10k User's Guide, available on the ServeRAID MR10 Support CD which can be downloaded in ISO format from: http://www.ibm.com/support/docview.wss?uid=psg1MIGR-5073160 Important: Prior to inserting the ServeRAID MR10k and converting your arrays, you must install the ServeRAID MR10 driver. Failure to do so prior to the conversion will render all data on those drives permanently inaccessible. The onboard LSI 1078 and the ServeRAID-MR10k are not supported with the ServeRAID manager. Use the MegaRAID Storage Manager (MSM) instead. One or more arrays can be formed using both the four internal disks and disks in an external disk enclosure such as the EXP3000 attached to the external SAS port. ServeRAID-MR10M The x3850 M2 and x3950 M2 also support the ServeRAID-MR10M, part number 43W4339, which has the following features: PCI Express x8 adapter card Supports SAS and SATA 2 Two external x4 ports using SFF-8088 connectors (no internal SAS connectors) 256 MB onboard cache using DDR2 memory Onboard battery backup unit (power for up to 72 hours; replace annually using FRU 43W4342) RAID levels 0, 1, 10, 5, 50, 6, 60 Supports the EXP3000 enclosure with cascading of enclosures of up to 9 per port Up to seven can be installed in the x3850 M2 and x3950 M2. More than three, however, will require custom testing using the IBM SPORE process. Refer to ServerProven® at the following Web site for the latest list of supported adapters and hot-swap SAS drives: http://www.ibm.com/servers/eserver/serverproven/compat/us/xseries/controllers/matr ix.html For a comparison of features of members of the ServeRAID family, see: http://www.redbooks.ibm.com/abstracts/tips0054.html The following publications are available for further reference: ServeRAID MR10k Quick Installation Guide ServeRAID MR10k User's Guide ServeRAID MR Software User's Guide ServeRAID-MR Device Driver Installation IBM System x3950 M2 and x3850 M2 Technical Introduction 31