Fujitsu teamserver M850ic Manuale di configurazione - Pagina 5
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Disk array configuration
• Physical pack
A collection of physical HDDs comprising a RAID System.
• • • • • • • • • • • • • • • •
• Logical drive
Logical drive (ex. D: ) seen by the Operating System.
• • • • • • • • • • • • • • • • •
• Partition
One of the logical access units into which a logical drive is divided.
• • • • • • • • • • • • • • • • • • • • • • •
<Restrictions>
(1) Physical pack must be comprised of the same type of HDDs.
(2) Maximum logical drive size is 2TB (GP5U141/142).
(3) The number of HDDs comprising a physical pack is as shown below.
RAID Level
The data is broken down into blocks,each on a
)
RAID 0
Duplicates the disk and writes the same data
)
RAID 1
The data is broken down into blocks and each blocks is
)
RAID 5
written together with parity bits on a separate disk drive.
(4) The same RAID level must be used when dividing a physical pack into a number of logical drives.
(5) A physical pack must comprise only of HDDs which are connected by the same RAID card.
(6) A RAID card can support more than one physical pack. ( even if different RAID levels)
(7) Internal and external array devices cannot be connected to the same RAID card.
(except for M8xx
~
)
NOTES
Physical pack
HDD
HDD
Partition 1
Partition 2
Discription
separate disk drive
onto two disks.
HDD
HDD
HDDs
(
2~8
(
2
The capacity of each logical drive is the number
(
3~8
5
Logical drive A
Logical drive B
* Drives can be divided into partition.
Logical drive C
Capacity of logical drives
The capacity of logical drive is same as the
capacity of connected HDD.
The capacity of the logical drive is half the
capacity of connected HDD.
of connected HDDs - 1.