Fujitsu Primergy TX200 S2 System Configuration And Order-Information Manual page 4

PRIMERGY TX200 S2
Disk array configuration
Physical pack A collection of physical HDDs composing a RAID.
Logical drive The logical drive (e.g. D: ) as seen by the Operating System.
Partition One of the logical access units into which a logical drive is divided
Physical pack
HDD
<Restrictions>
(1) Each physical pack must contain the same Product IDs of HDDs.
(2) In case of composing physical pack, the maximum total size is 2TB.
The maximum size of logical drive depends on restriction of installed OS.
(3) The number of HDDs composing a physical pack is as shown below.
RAID Level Description
RAID 0 The data is broken down into blocks,
each on a separate disk drive
RAID 1 Duplicates the disk and writes
the same data onto two disks.
RAID 5 The data is broken down into blocks
and each block is written together
with parity bits on a separate disk drive.
RAID 0+1 Duplicates the disk and breaks data down
into blocks, each on a
separate disk.
(4) The same RAID level must be used when dividing a physical pack into a number of logical drives.
(5) A physical pack must contain only HDDs which are connected by the same RAID Controller.
(6) A RAID Controller can support several physical packs under the following conditions.
- Physical pack should consist of HDDs of same product ID.
- In the case that several physical pack configured with HDDs of same capacity, product ID of all HDDs should be same
(7) A RAID Controller can support several different RAID levels under the following conditions.
- RAID level of logical drives in physical pack should be same
- Several logical drives (Max:8) can be supported in one physical pack
(8) HDD of same product ID in physical pack should be set as hot spare disk.
(9) In order to configure a spare disk environment with multiple physical packs,
each pack must contain one or more hot spare disks with the same product ID as the rest of the pack.
(10) In case that the same capacity HDDs are connected to the same RAID Controller, these HDDs must also have the same
rpm speed.
ch1
ch 0
ch 0
RAID Controller
ch 1
HDD
HDD
Partition 1
Partition 2
36GB 36GB 36GB
10000 rpm 10000 rpm 10000 rpm
HDD
Logical drive A
Logical drive B
* Drives can be divided into partitions.
Logical drive C
HDDs Capacity of logical drives
2~16 The capacity of logical drive is same
as the capacity of connected HDD.
2 The capacity of the logical drive is
half the capacity of connected HDD.
3~16 The capacity of each logical drive is
the number of connected HDDs - 1).
4~16 The capacity of each logical drive
is the half the capacity of connected
HDD.
36GB 36GB 36GB
10000 rpm 15000 rpm 15000 rpm