ocr: RAID PERFORMANCE VS. COST 16 14 RAID 1 and 5 Reods RAID 1 Writes 12 RAID 5 Writes 10 8 6 la L 2 3 5 - 10 11 12 13 14 Figure 4: Notice that RAID 1 and RAID 5 performs read equally. Both ofthese RAID levels can read andependently and. simultancously. from all drives for maxmnum perjormance. RAID 1has much lonver write performance; cach write MUST be. duplicated to tuo drive, makig write perfurmance one-balf that ofan equal sumber ofurmirrored drives. RAID 5 trites suffer even morc, depending On tbe size. ofthe write; a single black write is less efficient than one. that incoltes a stripe set bec ...
