packetized protocol 136 parameters

communications 7 rebuild 112

parity

checking RAID 5/50 217 performance

optimizing RAID 5 write 227 pool spare (global) 49

Port Data Rate 130 port name 90

Q

QAS 136

R

RAID 5

access alignment 229 access size 229 checking parity 217 drive selection 21

number of outstanding commands 229

optimizing 21

optimizing write performance 227 sequential access 229 sub-arrays 230

write performance 227 RAID 5 arrays

optimizing 21 RAID 5/50

full stripe write rate 164 parity check 217

partial command cluster rate 164 RAID 50

checking parity 217 RAID controllers

accessing 7 RAID level 0 20 RAID level 1 20 RAID level 10 21 RAID level 5 20 RAID level 50 21

RAID Level screen 28 RAID levels 19 read only access 90 read/write access 90 readahead

command efficiency 161 command hit rate 161 statistics 161

readahead cache 36 configuring 36

rebuild parameters 112 removing hot spare drives 121 reserve capacity

array 20 revision

firmware 15 rewriting parity 219 RS-232 port settings 7, 133 run-time information 13

S

SAN LUN mappings 89 configuration menu 91 creating 96

deleting 100 modifying 103 terminology 90 viewing 93

screen 48

Add or Remove Global and Dedicated Spares 48

Delete Array 51

Drive Capacity Reserve 32

Initialize/Trust Arrays 34 Modify the LUN Availability 81 RAID Level 28

Select a logical drive to delete 84 Select a Logical Drive to Modify

Mapped Number 87 Select Array 39

Select Chunk Size 29

Select LUN for Availability 81 Sub-Array Selection 33

241