4. How to Use
User Guide
Page 4-6
efficient array type but offers no
fault-tolerance
RAID 1
Mirroring, All disks have the same
data
Total of one drive
RAID 5
Block-level striping with distributed
parity, one disk fault tolerant
Total of all drives minus one
drive
RAID 6
Block-level striping with double
distributed parity, two disks fault
tolerant
Total of all drives minus two
drives
RAID 0+1
Combines the advantage of R0
and R1, provides optimal speed
and reliability
One-half the total capacity of
drives (Sum of RAID 1 member
sets)
When configuring RAID, you may take the follow items into consideration:
1.
Are you using a DAS or SAN environment?
2.
Do you currently have more than one RAID or JBOD?
3.
Which is more important, transfer speed or data security? One or two disk fault
tolerance?
4.
Do you need multiple volume or single volume on your RAID systems?
5.
Do you have to consider the metadata volume for SAN software?
6.
Do you consider using Global spare drives?
7.
The number of disk drives used determines the speed of the RAID created. Take into
account the desired speed when configuring RAID.
Summary of Contents for ExaSAN A12S2-PS
Page 8: ...1 Introduction User Guide 1 Introducing ExaSAN PCIe 2 0 Storage System...
Page 28: ...2 Preparation User Guide 2 Preparing to Install ExaSAN A12S2 PS...
Page 31: ...3 Installation User Guide 3 Installing the ExaSAN A12S2 PS...
Page 47: ...4 How to Use User Guide 4 Using RAIDGuard X...
Page 77: ...4 How to Use User Guide Page 4 30 2 Check the Confirm box and click Unlock Drive...
Page 79: ...5 RAID User Guide 5 RAID Overview...