User Manual

560
Vess R2000 Series Product Manual Promise Technologies
with (4) 100 GB physical drives has a capacity of 200 GB.
RAID 6 becomes more capacity efcient in terms of physical drives as the number of physical drives increases.
RAID 6 provides double fault tolerance. Your logical drive remains available when up to two physical drives fail.
RAID 6 is generally considered to be the safest RAID level.
A RAID 6 on Vess consists of 4 to 32 physical drives.
Advantages Disadvantages
•
HighReaddatatransactionrate
• MediumWritedatatransactionrate
• Goodaggregatetransferrate
• SafestRAIDlevel,exceptforRAID60
• Highdiskoverhead–equivalentoftwo
drivesusedforparity
• SlightlylowerperformancethanRAID5
Recommended Applications for RAID 6:
•
AccountingandFinancial
• Databaseservers
• Anyapplicationrequiringveryhighavailability