FAST CACHE

FAST CACHE

FAST CACHE

 

EMC ‘FAST Cache’ technology gives a performance enhancement to the VNX Storage Array by adding FLASH drives as a Secondary Cache, working hand-in-hand with DRAM Cache and enhancing overall Storage Array performance. EMC recommend firstly using available Flash Drives for FAST Cache and then adding Flash Drives as a tier to selected FAST VP pools as required. FAST Cache works with all VNX systems (And also CX4) and is activated by installing the required FAST Cache Enabler. FAST Cache works with traditional ‘Flare LUNs’ and ‘VP Pools’.

 

If the FAST Cache configuration requires any modification then it first needs to be disabled. By disabling (destroying) FAST Cache all dirty blocks are flushed back to disk; once FAST Cache has completed disabling then you may re-create FAST Cache with your new configuration.

 

Configuration Options

FAST Cache configuration options range from 100GB on a CX4-120 to 4.2TB of FAST Cache on a VNX-8000.

CX4 Systems:

CX4-120 – 100GB

CX4-240 – 200GB

CX4-480 – 800GB

CX4-960 – 2000GB

VNX1 Systems:

VNX 5100 – 100GB

VNX 5300 – 500GB

VNX 5500 – 1000GB

VNX 5700 – 1500GB

VNX 7500 – 2100GB

VNX2 Systems:

VNX 5200 – 600GB

VNX 5400 – 1000GB

VNX 5600 – 2000GB

VNX 5800 – 3000GB

VNX 7600 – 4200GB

VNX 8000 – 4200GB

 

FAST-Cache-MAXs

 

FAST Cache drives are configured as RAID-1 mirrors and it is good practice to balance the drives across all available back-end buses; this is due to the fact that FAST Cache drives are extremely I/O Intensive and placing more than the recommended maximum per Bus may cause I/O saturation on the Bus. Amount of FAST Cache drives per B/E Bus differs for each system but ideally for a CX/VNX1 system aim for no more than 4 drives per bus and 8 for a VNX2. It is best practice on a CX/VNX1 to avoid placing drives on the DPE or 0_0 that will result in one of the drives being placed in another DAE, for example DO NOT mirror a drive in 0_0 with a drive in 1_0.

 

Note: Do not mix different drive capacity sizes for FAST Cache, either use all 100GB or all 200GB drive types. Also for VNX2 systems there are two types of SSD available:

• FAST Cache SSDs are single-level cell (SLC) Flash drives that are targeted for use with FAST Cache. These drives are available in 100GB and 200GB capacities and can be used both as FAST Cache and as TIER-1 drives in a storage pool.EMC ‘FAST Cache’ technology gives a performance enhancement to the VNX Storage Array by adding FLASH drives as a Secondary Cache, working hand-in-hand with DRAM Cache and enhancing overall Storage Array performance. EMC recommend firstly using available Flash Drives for FAST Cache and then adding Flash Drives as a tier to selected FAST VP pools as required. FAST Cache works with all VNX systems (And also CX4) and is activated by installing the required FAST Cache Enabler. FAST Cache works with traditional ‘Flare LUNs’ and ‘VP Pools’.

 

If the FAST Cache configuration requires any modification then it first needs to be disabled. By disabling (destroying) FAST Cache all dirty blocks are flushed back to disk; once FAST Cache has completed disabling then you may re-create FAST Cache with your new configuration.

 

Configuration Options

FAST Cache configuration options range from 100GB on a CX4-120 to 4.2TB of FAST Cache on a VNX-8000.

CX4 Systems:

CX4-120 – 100GB

CX4-240 – 200GB

CX4-480 – 800GB

CX4-960 – 2000GB

VNX1 Systems:

VNX 5100 – 100GB

VNX 5300 – 500GB

VNX 5500 – 1000GB

VNX 5700 – 1500GB

VNX 7500 – 2100GB

VNX2 Systems:

VNX 5200 – 600GB

VNX 5400 – 1000GB

VNX 5600 – 2000GB

VNX 5800 – 3000GB

VNX 7600 – 4200GB

VNX 8000 – 4200GB

 

FAST-Cache-MAXs

 

FAST Cache drives are configured as RAID-1 mirrors and it is good practice to balance the drives across all available back-end buses; this is due to the fact that FAST Cache drives are extremely I/O Intensive and placing more than the recommended maximum per Bus may cause I/O saturation on the Bus. Amount of FAST Cache drives per B/E Bus differs for each system but ideally for a CX/VNX1 system aim for no more than 4 drives per bus and 8 for a VNX2. It is best practice on a CX/VNX1 to avoid placing drives on the DPE or 0_0 that will result in one of the drives being placed in another DAE, for example DO NOT mirror a drive in 0_0 with a drive in 1_0.

 

Note: Do not mix different drive capacity sizes for FAST Cache, either use all 100GB or all 200GB drive types. Also for VNX2 systems there are two types of SSD available:

• FAST Cache SSDs are single-level cell (SLC) Flash drives that are targeted for use with FAST Cache. These drives are available in 100GB and 200GB capacities and can be used both as FAST Cache and as TIER-1 drives in a storage pool.

Part Number

Description

Invoice

EMC SSD FAST CACHE Hard

 

FLN42S6F100

VNX 100GB FAST CACHE 25X2.5 DPE/DAE NEBS

استعلام قيمت / ثبت سفارش/  درخواست پيش فاکتور

FLN42S6F200

VNX 200GB FAST CACHE 25X2.5 DPE/DAE NEBS

FLN4DS6F100

VNX 100GB FAST CACHE 60X3.5 DAE NEBS

FLN4DS6F200

VNX 200GB FAST CACHE 60X3.5 DAE NEBS

FLN4VS6F100

VNX 100GB FAST CACHE 15X3.5 DAE NEBS

FLN4VS6F200

VNX 200GB FAST CACHE 15X3.5 DAE NEBS

FLV32S6F100

100GB FSTCACHE FLSH‐25X2.5 IN DPE/DAE

FLV32S6F200

200GB FSTCACHE FLSH‐25X2.5 IN DPE/DAE

FLV3VS6F100

100GB FST CACHE FLSH 15X3.5IN DPE/DAE

FLV3VS6F200

200GB FST CACHE FLSH 15X3.5IN DPE/DAE

FLV42S6F100

VNX 100GB FAST CACHE 25X2.5 DPE/DAE

FLV42S6F200

VNX 200GB FAST CACHE 25X2.5 DPE/DAE

FLV4D2S6F100

VNX 100GB FAST CACHE 120X2.5 DPE/DAE

FLV4D2S6F200

VNX 200GB FAST CACHE 120X2.5 DPE/DAE

FLV4DS6F100

VNX 100GB FAST CACHE 60X3.5 DAE

FLV4DS6F200

VNX 200GB FAST CACHE 60X3.5 DAE

FLV4VS6F100

VNX 100GB FAST CACHE 15X3.5 DAE

FLV4VS6F200

VNX 200GB FAST CACHE 15X3.5 DAE

FLVXDS6F100

VNX 100G FCACHE FLASH‐60X3.5IN DRV DAE

FLVXDS6F200

VNX 200G FAST CACHE FLASH‐60X3.5 DAE

FLV32S6F200

200GB FSTCACHE FLSH‐25X2.5 IN DPE/DAE

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