Clariion Architecture
Clariion Architecture is based on intelligent Storage Processors that manage physical drives on the back-end and service host requests on the front-end. Depending on the module, each Storage processor includes either one or two CPUs.
Storage Processors communicate to each other over the CLARiiON Messaging Interface (CMI).
Both the front-end connection to the host and the back-end connection to the physical storage are 2Gb/4GB Fibre channel
The CLARiiON storage system is based upon a modular architecture.
There are four building blocks in a Clariion.
DPE - Disk Processor Enclosure – Contains both disks and processor
DAE - Disk Array Enclosure – Contains disks only
SPE - Storage Processor Enclosure – Contains storage processor
SPS - Standby Power Supply – Provide battery backup protection
Clariion Features:
Data Integrity
How CLARiiON keeps data safe
(Mirrored write cache ,vault, etc)
Data Availability
Ensuring uninterrupted host access to data
(Hardware redundancy,pathfailover software(powerpath), Error reporting capability)
CLARiiON Performance
What makes CLARiiON a great performer
(cache, Dual SPs , Dual/quad back-end FC buses)
CLARiiON Storage Objects
A first look at LUNs, and access to them
(RAID Groups, LUNs , MetaLUNs,Storage Groups)
Vault:
Vault is a reserved area found on 1st nine disks of DPE in FC series and 1st five disks of DPE on CX series.
Data in write cache is dumped to the vault area in power failure emergency.
Once the system is turned on vault transfers dumped data back to cache
The first five drives in DAE are called vault drives
They are also used for vaulting purpose.
6.5 GB of each drive of vault drives is reserved to store Flare image, SPA and SPB boot images and for PSM LUN and Vaulting purpose
PSM LUN:
Persistent Storage Manager LUN ,created at the time of initialization by Navisphere
PSM is a hidden LUN where the records of configuration information and access logix database are stored.
It resides in the first three disks of code drives
Both SPs can access a single PSM and update themselves with new configurations via Clariion Messaging interface(CMI)
Fully redundant architecture
SP, cooling, data paths, SPS
Non-stop operation
Online software upgrades
Online hardware changes
Continuous diagnostics
Data and system
CLARalert
Advanced data integrity
Mirrored write cache
De-stage write cache to DISK upon power failure
No single points of failure
Tiered capacity
FC and ATA disks
From five to 480 disks
Flexibility
Mix drive types, RAID levels
RAID levels 0, 1, 1+0, 3, 5
Up to 16 GB memory
Clariion Architecture is based on intelligent Storage Processors that manage physical drives on the back-end and service host requests on the front-end. Depending on the module, each Storage processor includes either one or two CPUs.
Storage Processors communicate to each other over the CLARiiON Messaging Interface (CMI).
Both the front-end connection to the host and the back-end connection to the physical storage are 2Gb/4GB Fibre channel
The CLARiiON storage system is based upon a modular architecture.
There are four building blocks in a Clariion.
DPE - Disk Processor Enclosure – Contains both disks and processor
DAE - Disk Array Enclosure – Contains disks only
SPE - Storage Processor Enclosure – Contains storage processor
SPS - Standby Power Supply – Provide battery backup protection
Clariion Features:
Data Integrity
How CLARiiON keeps data safe
(Mirrored write cache ,vault, etc)
Data Availability
Ensuring uninterrupted host access to data
(Hardware redundancy,pathfailover software(powerpath), Error reporting capability)
CLARiiON Performance
What makes CLARiiON a great performer
(cache, Dual SPs , Dual/quad back-end FC buses)
CLARiiON Storage Objects
A first look at LUNs, and access to them
(RAID Groups, LUNs , MetaLUNs,Storage Groups)
Vault:
Vault is a reserved area found on 1st nine disks of DPE in FC series and 1st five disks of DPE on CX series.
Data in write cache is dumped to the vault area in power failure emergency.
Once the system is turned on vault transfers dumped data back to cache
The first five drives in DAE are called vault drives
They are also used for vaulting purpose.
6.5 GB of each drive of vault drives is reserved to store Flare image, SPA and SPB boot images and for PSM LUN and Vaulting purpose
PSM LUN:
Persistent Storage Manager LUN ,created at the time of initialization by Navisphere
PSM is a hidden LUN where the records of configuration information and access logix database are stored.
It resides in the first three disks of code drives
Both SPs can access a single PSM and update themselves with new configurations via Clariion Messaging interface(CMI)
Fully redundant architecture
SP, cooling, data paths, SPS
Non-stop operation
Online software upgrades
Online hardware changes
Continuous diagnostics
Data and system
CLARalert
Advanced data integrity
Mirrored write cache
De-stage write cache to DISK upon power failure
No single points of failure
Tiered capacity
FC and ATA disks
From five to 480 disks
Flexibility
Mix drive types, RAID levels
RAID levels 0, 1, 1+0, 3, 5
Up to 16 GB memory
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