102 IBM eX5 Implementation Guide
Intelligent lithium polymer battery backup unit is standard with up to 48 hours of data
retention.
Support for RAID levels 0, 1, 5, 10, and 50 (RAID-6 and 60 support with either the optional
M5000 Advanced Feature Key or the optional M5000 Performance Key).
Connections:
– Up to 240 SAS or SATA drives
– Up to 9 daisy-chained enclosures per port
SAS and SATA drives are supported, but mixing SAS and SATA in the same RAID array is
not supported.
Support for up to 64 logical volumes.
Support for LUN sizes up to 64 TB.
Configurable stripe size up to 1024 KB.
Compliant with Disk Data Format (DDF) configuration on disk (COD).
S.M.A.R.T. support.
Support for the optional M5000 Advanced Feature Key, which enables the following
features:
– RAID levels 6 and 60
– LSI SafeStore: Support for SED services, such as instant secure erase and local key
management (which requires the use of self-encrypting drives).
Support for SSD drives in a mixed environment with SAS and SSD with the optional
M5000 Series Performance Accelerator Key, which enables the following features:
– RAID levels 6 and 60
– Performance optimizations for SSDs
– LSI SafeStore: Support for SED services, such as instant secure erase and local key
management (which requires the use of self-encrypting drives).
For more information, see the IBM Redbooks at-a-glance guide ServeRAID M5025
SAS/SATA Controller for IBM System x, TIPS0739, which is available at this website:
http://www.redbooks.ibm.com/abstracts/tips0739.html?Open
The x3850 X5 is qualified with a wide range of external storage options. To view the available
solutions, see the Configuration and Options Guide, which is available at this website:
http://ibm.com/systems/xbc/cog/x3850x5_7145/x3850x5_7145io.html
The System Storage Interoperation Center (SSIC) is a search engine that provides details
about supported configurations:
http://www.ibm.com/systems/support/storage/config/ssic
3.10 Optical drives
An optical drive is optional in the x3850 X5. Table 3-29 lists the supported part numbers.
Table 3-29 Optical drives
Part number Feature code Description
46M0901 4161 IBM UltraSlim Enhanced SATA DVD-ROM
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