Table 2.14 Reliability Of Ams200 Rack-Mount Model (Rks/Rkajat) - Acer HDS AMS200 Reference Manual

Table 2.14 Reliability of AMS200 Rack-Mount Model (RKS/RKAJAT)
Item Model
Reliability MTBDL (Mean
Time Between Data
Lost)
(Note)
Drop in package
(JIS Z 0200-1997)
Radio frequency
radiation
Instantaneous
power failure
Note: The value of the MTBDL is calculated in the following configuration: RAID 5:68 sp
((15D+1P)(4group+4(spare)). This value varies on user's system configuration.
36 Chapter 2 Planning for Installation and Operation
RKS
About 20 million hour or longer (in RAID5 configuration)
RAID 6 configuration:
(MTBF of the disk drive)
n(n−1)×Number of Parity group×MTTR
RAID 1 or RAID1+0 configuration
(MTBF of the disk drive)
n×1×Number of Parity group×MTTR
MTTR: Mean Time To Repair
n: Number of the mounted disk drive/Parity group
No abnormality must be caused by a free drop of level IV.
Conforms to FCC Class A
10 ms (100% dip)
Rack-Mount Model
RKAJAT
2
2