The Performance Upgrade for Flex System (implemented using the LSI MegaRAID FastPath software)
provides high-performance I/O acceleration for SSD-based virtual drives by using a low-latency I/O path to
increase the maximum I/O per second (IOPS) capability of the controller. This feature boosts the performance
of applications with a highly random data storage access pattern, such as transactional databases. Part
number 90Y4412 is a Feature on Demand license.
SSD Caching Enabler for traditional hard drives (90Y4447)
The SSD Caching Enabler for Flex System (implemented using the LSI MegaRAID CacheCade Pro 2.0) is
designed to accelerate the performance of HDD arrays with only an incremental investment in SSD
technology. The feature enables the SSDs to be configured as a dedicated cache to help maximize the I/O
performance for transaction-intensive applications, such as databases and web serving. The feature tracks
data storage access patterns and identifies the most frequently accessed data. The hot data is then
automatically stored on the SSDs that are assigned as a dedicated cache pool on the ServeRAID controller.
Part number 90Y4447 is a Feature on Demand license. This feature requires at least one SSD drive be
installed.
Note: Not all SSDs support SSD Caching Enabler (CacheCade) feature. See
http://ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5094754
for details.
Internal drive options
The 2.5-inch drive bays support SAS or SATA HDDs or SATA SSDs. The following table lists the supported 2.5-inch
drive options.
Table 10. 2.5-inch drive options for internal disk storage
Flex System x440 Compute Node (7917)
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