94 IBM eX5 Implementation Guide
Table 3-25 Controllers supported with the eXFlash SSD backplane option
When ordering M5000 series controllers (M5014, M5015, or M5025) for use only with SSD
drives, the cache battery must not be used for performance reasons. If using M5000 series
controllers in a mixed SSD and SAS environment cache, order the battery along with the
Performance Accelerator Key.
If the ServeRAID controller being used is already set up and you want to leave the battery
attached, you can still disable the write back cache by using the MegaRAID web BIOS, as
shown in Figure 3-24.
Part number Feature code Description
46M0914 3876 IBM 6Gb SSD Host Bus Adapter (No RAID support)
46M0831 0095 ServeRAID M1015 SAS/SATA Controller
46M0829 0093 ServeRAID M5015 SAS/SATA Controller
a
a. When using SSD drives, you must disable the write back cache to prevent latency and
bottlenecks by using the controller settings or by adding the ServeRAID M5000 Series
Performance Accelerator Key. See “ServeRAID M5000 Series Performance Accelerator Key”
on page 95 for more information.
46M0916 3877 ServeRAID M5014 SAS/SATA Controller
a
46M0969 3889 ServeRAID B5015 SSD
a
46M0930 5106 IBM ServeRAID M5000 Advance Feature Key: Adds RAID-6,
RAID-60, and self-encrypting drives (SED) Data Encryption Key
Management to the ServeRAID M5014, M5015, and M5025
controllers
81Y4426 A10C IBM ServeRAID M5000 Performance Accelerator Key: Adds Cut
Through I/O (CTIO) for SSD FastPath optimization on ServeRAID
M5014, M5015, and M5025 controllers
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