Upload
sreenivas-reddy-g
View
215
Download
0
Embed Size (px)
Citation preview
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 1/52
1 Copyright © 2000,2003, Storage Networking Industry Association
Obligatory rubric
Copyright © 2000,2003 Storage Networking
Industry Association (SNIA).
SNIA-TC members may use this materialfreely; all others must conform to usage
notes in the speaker noted for this slide.
See SNIA-SSM-colors.ppt for printing andcolor/graphics conventions.
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 2/52
Copyright © 2000,2003, Storage Networking Industry Association
SNIA shared-storage model
A work in progress …
An architectural overview
This revision:
• 2001-06-05 last content update
• 2003-04-13 last graphics update
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 3/52
3 Copyright © 2000,2003, Storage Networking Industry Association
Contents
Purpose
The SNIA storage model
Layers, functions, and services
Networks and interfaces
Applying the SNIA storage model
Common storage architectures
Conclusions
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 4/52
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 5/52
5 Copyright © 2000,2003, Storage Networking Industry Association
Benefits
A common ―architecture vocabulary‖
Reference comparisons between common
solutions
Help to align the industry
Customers can better structure their choices
Vendors can better explain their differences
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 6/52
6 Copyright © 2000,2003, Storage Networking Industry Association
What the model is and is not
It is not:
A specification, an architecture, a design, a product,
a recommendation, or an installation
It is:
A framework that captures the functional layers andproperties of a storage system
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 7/527 Copyright © 2000,2003, Storage Networking Industry Association
Classic storage model
Application
Storage domain: “anything goes!”
Network? Appliance?
Data
mover? Array?
NAS?
JBOD?
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 8/52
8 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
Block layer
Storage devices (disks, …)
Database
(dbms)
File system
(FS)
The SNIA shared storage model
S t o r a g e d o m a i n
S
e r v i c e s
Network
Host
Device
Block
aggregation
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 9/52
9 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
The SNIA storage model:File/record layer
Database
(dbms)
File system
(FS)
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 10/52
10 Copyright © 2000,2003, Storage Networking Industry Association
The SNIA storage model:File/record layer — functions
Aka ―access methods‖ File system, database
Primary responsibility: packing manysmaller things into a few larger ones Fine-grain naming, space allocation
Secondary responsibilities Caching for performance Coherency in distributed systems
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 11/52
11 Copyright © 2000,2003, Storage Networking Industry Association
The SNIA storage model:Block layer
Block layer
Storage devices (disks, …)
Block aggregation
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 12/52
12 Copyright © 2000,2003, Storage Networking Industry Association
The SNIA storage model:Block layer — functions
Storage devices – storing data disk drives, tape drives, solid-state disks, …
Block aggregation – address mapping in-SN aggregation, or “virtualization”
slicing & concatenation, striping
local & remote mirroring, RAID-n
Examples
volume managers disk array LUs
Secondary responsibilities caching
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 13/52
13 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
Database
(dbms)
File system
(FS)
Block layer
The SNIA storage model:Access path examples
Storage devices (disks, …)
Block aggregation
Note: all 8
possible paths
can be used!
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 14/52
14 Copyright © 2000,2003, Storage Networking Industry Association
Block layer
Block-mapping functions:
what can be done
Functional decomposition:where it can be done
Sample architectures
Block layer
Storage devices (disks, …)
Blockaggregation
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 15/52
15 Copyright © 2000,2003, Storage Networking Industry Association
Block layer What can be done
Space management
making a large store from many small ones
packing many small stores into one large one
Striping
for performance (load balancing, throughput)
Redundancy
full (local & remote mirroring, RAID-1, -10, …)
partial (RAID-3, -4, -5, …)
point-in-time copy
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 16/52
16 Copyright © 2000,2003, Storage Networking Industry Association
Block layer Where it can be done
Host-side logical volume managers
device drivers, HBAs
SN-based HBAs, specialized SN appliances
Device-based
array controllers (e.g., RAID) disk controllers (e.g., sparing)
Storage devices
Blockaggregation
Network
Host
Device
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 17/52
17 Copyright © 2000,2003, Storage Networking Industry Association
Block layer How it is done
Building blocks input: vector of blocks
output: vector of blocks
Result: building blockscan be stacked enables the 3 layer model for the
block layer
layers can be nested on one another
could be extended to more layers
… …
…
Blockaggregation
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 18/52
18 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Block layer Sample architectures
Application
H o s t . w i t h L V M
( + s o f t w a r e
R A I D ? )
1. Direct-attach
Disk array
SN
H o s
t
w i t h L V M
2. SN-attach
F i l e / r e c o r d
l a y e r
B l o c k
l a y e r
3. SN aggregation
Aggregation
appliance
H
o s t ,
n o
L V M
Storage devices
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 19/52
19 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
Byte-mapping functions:
what can be done
Functional decomposition:where it can be done
Sample architectures
File/record layer Database(dbms)
File system(fs)
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 20/52
20 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer What can be done
Database management systems
tuples tables
tables table-spaces
table-spaces volume
File systems
files volume
New types
http caches: a kind of distributed file system?
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 21/52
21 Copyright © 2000,2003, Storage Networking Industry Association
device
File/record layer Where it can be done
Host-side file systems and databases
NFS, CIFS, etc. are client-server
splits inside the file system
SN-based NAS head
Device-based NAS functions in array box
NAS
H o s t w i t h
N F S / C I F S
c l i e n t
H o s t w i t h l o c a l
F S / d b m s
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 22/52
22 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
File/record layer
H o s t . w i t h L V M
a n d s o f t w
a r e R A I D
1. Direct-attach
F i l e / r e c o r d
l a y e r
B l o c k
l a y e r
NAS
server
4. NAS server
H o s t . w i t h L V M
Disk array
2. SN-attach
Host3. NAS head
NAS
head
Host
LAN
Application
SN
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 23/52
23 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
Database(dbms)
File system(fs)
The SNIA storage modelA layered view
IV. Application
III. File/record layer IIIa. Database
IIIb. File system
II. Block aggregationIIa. Host
IIb. Network
IIc. DeviceI. Storage devices
Storage devices
Blockaggregation
Application
Network
Host
Device
IV
III
IIc
IIb
IIa
I
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 24/52
24 Copyright © 2000,2003, Storage Networking Industry Association
S t o r a g e d o m a i n
File/record layer
Block layer
The SNIA storage modelServices subsystem
Application
Storage devices (disks, …)
Block aggregation
Database
(dbms)
File system
(fs)
S e r v i c e s
D i s c o
v e r y , m o n i t o r i n g
R e s o u r c e
m g m t , c o n f i g u r a
t i o n
S e
c u r i t y ,
b i l l i n g
R e d u n d a n c
y m g m t ( b a c k u p , …
)
H i g h a v a i l a b i l i t y ( f a i l - o v e r ,
… )
C a p
a c i t y p l a n n i n g
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 25/52
25 Copyright © 2000,2003, Storage Networking Industry Association
Services
Operations off the critical path
naming, discovery, monitoring, configuration, security, billing,
redundancy management (backup, …), high availability
management (fail-over, …), capacity planning, … strong ties into system-wide management services
Vital for successful operation
and a major opportunity for SNIA …
… but not discussed further in this presentation
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 26/52
26 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Caching… can be added to almost any layer
H o s t . w i t h L V M
a n d s o f t w
a r e R A I D
F i l e / r e c o r d
l a y e r
B l o c k
l a y e r
Host
NAS
head
Host
H o s t . w i t h L V M
Disk array
SN
NAS
head
LAN
Ideally, caching onlyaffects performance.
But: coherencyimplications do affectmanagement(protocols, interfaces)
Application
Cache
Cache
Cache
Cache
Cacheappliance
Cache
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 27/52
27 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
ClusteringInter-box aggregation
H o s t . w i t h L V M
a n d s o f t w
a r e R A I D
F i l e / r e c o r d
l a y e r
B l o c k
l a y e r
Host
NAS
head
Host
H o s t . w i t h L V M
Disk array
SN
NAS
head
LAN
Cluster FS
Multi-node LVM
Purposes:
• load spreading acrosspeers (scalability)
• alternate paths (highavailability, scalability)
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 28/52
28 Copyright © 2000,2003, Storage Networking Industry Association
Q: Data versus storage?
A: Putting information into containers
user: data (“learning my preferences”)
application: container (“user keystroke history”)
application: data (“user keystroke history file”) file system: container (“byte vector”)
file system: data (“a named file”)
volume system: container (“blocks in volume”)
volume system: data (“replicated, striped layout”)
disk array: container (“blocks in LU”)
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 29/52
29 Copyright © 2000,2003, Storage Networking Industry Association
SharingContent sharing or resource sharing?
Content sharing (―logical‖, ―data‖) contents accessed and understood by multiple
clients
• e.g., file system, Oracle Parallel Server dbms some of the hard issues:
• coherency• heterogeneous data formats
Resource sharing (―container‖, ―physical‖) e.g., disk array where hosts access disjoint LUs
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 30/52
30 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
SharingContent sharing and resource sharing
H o
s t
w i t h
L V M
F i l e
/ r e c o r d
l a y e r
B l o c k
l a y e r
H o
s t
w i t h
L V M
SN
NAS system
HostHost
LAN
Application
Resourcesharing
Array is
shared,
but LUs are
disjoint
Data sharing
NAS system is
shared – and so
are the files
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 31/52
31 Copyright © 2000,2003, Storage Networking Industry Association
Storage device
Block layer
File layer
Operating System
Application
Networks and interfacesare pervasive in the model
Network or interface
Network
Bus
API
Full benefits come
only from
common, open
interfaces
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 32/52
32 Copyright © 2000,2003, Storage Networking Industry Association
Network or interface
Network or interface
Network or interface
Network or interface
Networks and interfacesComposition and scaling
Open interfaces
allow:
1. vertical
composition
2. horizontal scaling
3. supplier
independence
Network
Bus
API
API
Network
Bus
API
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 33/52
33 Copyright © 2000,2003, Storage Networking Industry Association
Networks and interfacesOpen interfaces require …
Well defined: functions (what they do)
interface protocols (data formats)
access protocols (system call, RPC, flow control, …)
That are: published
supported by multiple products
=> standards (which is where SNIA comes in)
Network
Bus
API
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 34/52
34 Copyright © 2000,2003, Storage Networking Industry Association
? NAS
Q: ―SAN‖ versus ―NAS‖? A: a poorly-formed question
Q: hardware: FibreChannel vsEthernet vs InfiniBand?
Q: API: blocks vs files (aka ―NAS‖)
vs objects (OSD)?
Q: protocol: FCP vs TCP/IP vs … ?
A: (to all the above) it depends …
Storage network (SN): any (mostly) dedicated network,
installed (mostly) for storage traffic
whatever the hardware, API, or protocol
―SAN‖
FC E’net
iSCSI
F i l e s
B l o c k s
FC E’net
F i l e s
B l o c k s
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 35/52
Copyright © 2000,2003, Storage Networking Industry Association
Some common storage
architectures
Mapping the SNIA model onto somecurrent implementations
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 36/52
36 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Direct-attach block storage
Disk array
H o s t ,
n o L V M
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
H o s t . w
i t h L V M
a n d s o f t w
a r e R A I D
H o
s t
w i t h
L V M
Application • Direct-attach
• Multi-attach box
E.g., SCSI
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 37/52
37 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
SN-attached block storage
Disk array
H o s t ,
n o L V M
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
SN
―SN‖ = any network used for storageaccess. E.g., Fibre Channel,Ethernet, …
H o s t
w i t h
L V
M
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 38/52
38 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
SN-attached block storagewith metadata server
Disk array
H o s t
w i t h
L V
M
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
SNBlock-aggregationmetadata server
H o s t ,
n o L V M
Aggregation map(metadata) issupplied by anexternal server
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 39/52
39 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Block storage aggregationin a storage network appliance
Disk array
SN
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
Aggregationappliance
H o
s t
w i t h
L V M
H o s t ,
n o L V M
Application aka ―SN virtualization‖
Functions: LVM, caching
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 40/52
40 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Multi-siteblock storage
Disk array
SN
Aggregationappliance
H o s t . w i t h L V M
Application
Disk array
Aggregationappliance
H o s t .
w i t h L V M
Application
SN appliance
WAN
WAN
Host-to-host
Functions: point-in-timecopy, caching,local & remote mirroring, …
WAN
Device-to-device
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 41/52
41 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
File server
NAS system
HostHost
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
LAN-attached―NAS‖ system
May do SN/blockaggregation, etc. insidein the NAS system box
Application
LAN
privateSN?
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 42/52
42 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
File server controller (―NAS head‖)
NAS
head
Disk array
F i l e
/ r e c o r d
l
a y e r
B l o c k
l a y e r
No storage in thefile server controller box
HostHost
LAN
Application
SN
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 43/52
43 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
NAS/file server metadatamanager (―asymmetric‖)
Disk array
F i l e
/ r e c o r d
l a y e r
B l o c k
l a y e r
Hosts get file meta-data from FS/NAScontroller, thenaccess the datadirectly
H o
s t . w i t h L V M
Filemetadata
Blockaccesses
FS controller canalso be NAS server
Host
LAN
SN
Application
File system
metadata
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 44/52
44 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Object-based Storage Device(OSD), CMU NASD
OSDdevice
F i l e
/ r e c o r d
l a y e r
B l o c k
l a y e r
Host
Object
metadata
Host
Application
LAN
Securitymetadata
Filemetadata
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 45/52
Copyright © 2000,2003, Storage Networking Industry Association
Summary & conclusions
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 46/52
46 Copyright © 2000,2003, Storage Networking Industry Association
File/record layer
Database(dbms)
File system(FS)
The SNIA shared storage model
S t o r a g
e d o m a i n
Block layer
Storage devices (disks, …)
S e r v i c e s
D i s c o
v e r y , m o n i t o r i n g
R e s o u r c e
m g m t , c o n f i g u r a t i o n
S e
c u r i t y ,
b i l l i n g
R e d u n d a n c y m g m t ( b a c k u p , …
)
H i g h a v a i l a b i l i t y ( f a i l - o v e r , …
)
C a p
a c i t y p l a n n i n g
Application
Network
Host
Device
Block
aggregation
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 47/52
47 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
Block layer Sample architectures
H o s t . w
i t h L V M
a n d s o f t w
a r e R A I D
1. Direct-attach
SN
H o s t . w
i t h L V M
Disk array
2. SN-attach
3. SN aggregation
Aggregation
appliance
H o s t ,
n o L V M
F i l e
/ r e c o r d
l a y e r
B l o c k
l a y e r
Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 48/52
48 Copyright © 2000,2003, Storage Networking Industry Association
Device block-aggregation
Network block-aggregation
Host block-aggregation
File/record layer Sample architectures
H o s t . w
i t h L V M
a n d s o f t w
a r e R A I D
1. Direct-attach
F i l e
/ r e c o r d
l a y e r
B l o c k
l a y e r
NAS
server
4. NAS server Host
3. NAS head
NAS
head
Host
LAN
H o s t . w
i t h L V M
Disk array
SN
2. SN-attach Application
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 49/52
49 Copyright © 2000,2003, Storage Networking Industry Association
Uses for the model
Vendors place products in the space of architectures
clarify product differences
Customers understand vendor offerings better
The industry
basis for common definitions, communication,understanding, interoperability
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 50/52
50 Copyright © 2000,2003, Storage Networking Industry Association
Conclusions
The SNIA shared storage model is both simple anduseful to highlight similarities and differences
as a basis for comparisons Still a work in progress
data movers, tape drives, …
better comparisons …
suggestions?
The SNIA-TC welcomes input: <[email protected]>
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 51/52
51 Copyright © 2000,2003, Storage Networking Industry Association
Authors
John Wilkes, Hewlett-Packard (project lead)
Harald Skardal, NetApps
David Black, EMC
Wayne Rickard (SNIA TC chairperson), Gadzoox
Co-conspirators: the rest of the SNIA TechnicalCouncil Dave Anderson, Seagate Technology
Jim Carlson, IBM Garth Gibson, CMU/Panasas
Kevin Phaup, HighGround Systems
David Thiel, Compaq
7/28/2019 SNIA-SSM-slides-2003-04-13
http://slidepdf.com/reader/full/snia-ssm-slides-2003-04-13 52/52