PE RC 3/SC Fe atures 57PERC 3/SC Fault Tolerance FeaturesThe PERC 3/SC fault tolerance features are shown in Table 4-5.Software UtilitiesThe PERC 3/SC software utilities are shown in Table 4-6.Maximum scatter/gathers 26 elementsMaximum size of I/O requests 6.4 MB in 64 KB stripesMaximum queue tags per drive As many as the drive can accept.Stripe sizes 2 KB, 4 KB, 8 KB, 16 KB, 32 KB,64 KB, or 128 KBMaximum number of concurrentcommands255Support for multiple initiators YesTa b l e 4 - 5 . P E R C 3 / S C Fa u l t To l e r a n c e Fe a t u r e sSpecification FeatureSupport for SMART YesDrive failure detection AutomaticDrive rebuild using hot spares AutomaticManual replacement of drives without systemshutdownYesParity generation and checking YesTa b l e 4 - 6 . S o f t w a r e U t i l i t i e s Fe a t u r e sSpecification FeatureGraphical user interface YesManagement utility YesTa b l e 4 - 4 . A r r a y P e r f o r m a n c e Fe a t u r e s(continued)Specification Feature