Copyright © 2000,2003 Storage Networking Industry Association

“Iconic images” from the SNIA shared storage model

These slides are a subset of the images from the shared storage model that can serve as a set of “icons” that can be used in publicity material. The “speaker notes” supply additional important commentary. This revision:

• 2001-06-05 last content update

• 2003-04-13 last graphics update

2 Copyright © 2000,2003, Storage Networking Industry Association

Obligatory rubric

Copyright © 2000,2003 Storage Networking Industry Association (SNIA).

SNIA-TC members may use this material freely; all others must conform to usage notes in the speaker noted for this slide.

See SNIA-SSM-colors.ppt for printing and color/graphics conventions.

3 Copyright © 2000,2003 Storage Networking Industry Association

Classic storage model (a Negative Example!)

Application

Storage domain:“anything goes!”

Network?Appliance?

Data mover?

Array?

NAS?

JBOD?

4 Copyright © 2000,2003 Storage Networking Industry Association

The SNIA storage modelOverview

File/record layerFile/record layer

Block layerBlock layer

Storage devices (disks, …)Storage devices (disks, …)

Database(dbms)

File system(FS)

Sto

rage d

om

ain

Serv

ices

Serv

ices

Network

Host

DeviceBlock aggregation

Application

5 Copyright © 2000,2003 Storage Networking Industry Association

The SNIA storage modelSimplified functional partitioning

Device block-aggregation

Network block-aggregation

Host block-aggregation

Hos

t. w

ith L

VMan

d so

ftwar

e R

AID

1. Direct-attach

File

/re

cord

lay

er

Blo

ckla

ye

r

NASserver

4. NAS server

Hos

t. w

ith L

VM

Disk array

2. SN-attach

Host3. NAS head

NAS head

Host

LAN

Application

SN

6 Copyright © 2000,2003 Storage Networking Industry Association

Device block-aggregation

Network block-aggregation

Host block-aggregation

The SNIA storage modelOther aggregation models

File

/re

cord

lay

er

Blo

ckla

ye

r

Disk array

LAN

Host2. File metadata

File metadata

server

SN

Hos

t. w

ith L

VM

Application

Aggregationappliance

3. SN appliance

1. Block metadata

Blockmetadata

server

7 Copyright © 2000,2003 Storage Networking Industry Association

Device block-aggregation

Network block-aggregation

Host block-aggregation

The SNIA storage modelFull function-partitioning view

Hos

t. w

ith L

VMan

d so

ftwar

e R

AID

1. Direct-attach

File

/re

cord

lay

er

Blo

ckla

ye

r

NAS head

4. NAS head

2. SN-attach

Hos

t. w

ith L

VM

Disk array

SN

5. SN aggregation

Aggregationappliance

Blockmetadata

server

File metadata

server

6. Metadata aggr’n

3. NAS server

LAN

HostHost

NASserver

Application

8 Copyright © 2000,2003 Storage Networking Industry Association

The SNIA storage model Multi-site block storage

Device block-aggregation

Network block-aggregation

Host block-aggregation

Disk array

SNAggregation

appliance

Hos

t. w

ith L

VM

Application

Disk array

Aggregationappliance

Hos

t. w

ith L

VM

Application

SN applianceSN appliance

WAN

WAN

Host-to-hostHost-to-host

Functions: point-in-timecopy, caching, local & remote mirroring, …

Functions: point-in-timecopy, caching, local & remote mirroring, …

WAN

Device-to-deviceDevice-to-device

File

/re

cord

lay

er

Blo

ckla

ye

r