Array Performance Features; Fault Tolerance Features; Table 5-4. Array Performance Features; Table 5-5. Fault Tolerance Features - Dell PowerEdge Expandable RAID Controller 3 User Manual

Array Performance Features

Table 5-4 displays the PERC 3/DC and PERC 3/DCL array performance
features.
Ta b l e 5 - 4 . A r r a y P e r f o r m a n c e Fe a t u r e s
Specification
Host data transfer rate
Drive data transfer rate
Maximum scatter/gathers
Maximum size of I/O requests
Maximum queue tags per drive
Stripe sizes
Maximum number of concurrent
commands
Support for multiple initiations

Fault Tolerance Features

Table 5-5 lists the fault tolerance features.
Ta b l e 5 - 5 . Fa u l t To l e r a n c e Fe a t u r e s
Specification
Support for SMART
Optional battery backup for cache memory
Drive failure detection
Drive rebuild using hot spares
Manual replacement of hard drives without system
shutdown
Parity generation and checking
Feature
533 MB/s
160 MB/s
26 elements
6.4 MB in 64 KB stripes
As many as the drive can accept.
2 KB, 4 KB, 8 KB, 16 KB, 32 KB,
64 KB, or 128 KB
255
Yes
Feature
Yes
Yes. Up to 72 hours data
retention.
Automatic
Automatic
Yes
Yes
PE RC 3/ DC and PE RC 3/DC L Fe atures
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