96 IBM eX5 Implementation GuideThe failure rate of SSDs is low because, in part, the drives have no moving parts. The 50 GBHigh IOPS SSD is a Single Level Cell (SLC) device with Enterprise Wear Leveling. As aconsequence of both of these technologies, the additional layer of protection that is providedby a RAID controller might not always be necessary in every client environment and, incertain cases, RAID-0 might even be an acceptable option.3.9.4 SAS and SSD controllersTable 3-27 lists the disk controllers that are supported in the x3850 X5.Table 3-27 Disk controllers that are compatible with the x3850 X5RAID levels 0 and 1 are standard on all models (except 7145-ARx) with the integrated BR10iServeRAID controller. Model 7145-ARx has no RAID capability standard.All servers, even those servers that are not standard with the BR10i (model 7145-ARx),include the blue mounting bracket (see Figure 3-25 on page 101), which allows for the easyinstallation of a supported RAID controller in the dedicated x8 PCIe slot behind the disk cage.Only RAID controllers that are supported with the 2.5-inch SAS backplane can be used in thisslot. See Table 3-27 for a summary of these supported options.ServeRAID BR10i ControllerThe ServeRAID-BR10i has the following specifications: LSI 1068e-based adapter Two internal mini-SAS SFF-8087 connectors SAS 3 Gbps PCIe x8 host bus interface Fixed 64 KB stripe sizePartnumberFeaturecode NameSupports2.5-inch SASbackplaneSupportseXFlash SSDbackplaneDedicatedslot aa. See 3.9.5, “Dedicated controller slot” on page 100.Battery Cache RAID support44E8689 3577 ServeRAID BR10i bb. The BR10i is standard on most models. See 3.3, “Models” on page 64.Yes No Yes No None 0,1,1E46M0831 0095 ServeRAID M1015 Yes Yes Yes No None 0,1,10,5,50 cc. M1015 support for RAID-5 and RAID-50 requires the M1000 Advanced Feature Key (46M0832, 9749).46M0916 3877 ServeRAID M5014 Yes Yes Yes Optional 256MB 0,1,10,5,50,6,60 dd. M5014, M5015, and M5025 support for RAID-6 and RAID-60 requires the M5000 Advanced Feature Key(46M0930, fc 5106).46M0829 0093 ServeRAID M5015 Yes Yes Yes Yesee. ServeRAID M5015 option part number 46M0829 includes the M5000 battery; however, the feature code 0093 doesnot contain the battery. Order feature code 5744 if you want to include the battery in the server configuration.512MB 0,1,10,5,50,6,60 d46M0830 0094 ServeRAID M5025 No No No Yes 512MB 0,1,10,5,50,6,60 dNoneff. The IBM 6Gb SSD Host Bus Adapter is currently not available as a separately orderable option. Use the featurecode to add the adapter to a customized order, using the configure-to-order (CTO) process. Part number 46M0914is the L1 manufacturing part number. Part number 46M0983 is the pseudo option number, which is also used inmanufacturing.3876 IBM 6Gb SSD HBA No Yes No No None No46M0969 3889 ServeRAID B5015 SSD No Yes No No None 1,5
