比較全的廠商VTL/NAS/Dedup支持列表，給大家參考比較一下

mantuntun

Vendor/Product	Original Vendor	VTL, NAS, or Local	Integrated or Standalone	Appliance, Gateway, or Software	De-dupe	Inline or Post-process	Dedupe Domain	Dedupe Method	OST	Deduped Replication
See definitions of these column names
COPAN	FS=COPAN VTL=Falconstor	VTL & NAS	Integrated	Appliance	On VTL	Post-process	Global	Hash	Yes	Yes
Data Domain	Data Domain	VTL & NAS	Standalone	Appliance & Gateway	Yes	Inline	Local	Hash	Yes	Yes
EMC 3D 1500/3000	Quantum	VTL,NAS	Integrated	Appliance	Yes	Both	Local	Hash	Yes	Yes
EMC 3D 4000	Quantum	VTL	Integrated	Appliance	Yes	Post-process	Local	Hash	No	Yes
EMC Avamar	Avamar	VTL & NAS	Standalone	Appliance & Software	Yes	Inline	Global	?	?	Yes
EMC EDL	Falconstor	VTL	Integrated	Appliance	No	N/A	N/A	N/A	?	No
Exagrid	Exagrid	NAS	N/A	Appliance	Yes	Inline	Global	Delta Diff	No	Yes
Falconstor	Falconstor	VTL	Integrated	Software	Yes	Post-process	Global	Hash	Yes	Yes
Gresham Clarita VTL	Gresham	Integrated	Software	No	N/A	N/A	N/A	N/A	?	No
Fujitsu-Siemens CentricStor	Fujitsu-Siemens	Integrated	Appliance	No	N/A	N/A	N/A	N/A	?	No
HDS VTL	?	?	?	?	?	?	?	?	?	?
HP VTL	SEPATON	VTL	Standalone	Appliance	Yes	Post-process	Global	Delta Diff	No	No
IBM VTL	Diligent (IBM)	VTL	Standalone	Appliance	Yes	Inline	Global (2 nodes)	Delta Diff	No	Storage- based
NEC Hydrastor	NEC	NAS	N/A	Software	Yes	Inline	Global	Hash	No	Yes
NetApp Nearstore VTL	NetApp	VTL	Integrated	Appliance	Yes	Post-process	Local	Delta Diff	No	No
NetApp NearStore	NetApp	NAS	N/A	Appliance	Yes	Post-process	Local to Flex-vol	Hash + bit compare	No	Yes
NetZerver FileZerver	NetZerver	NAS	Standalone	Appliance	Yes	Inline	Global	Hash File redundancy	No	Storage- based
Overland Reo	Diligent	VTL	Standalone	Appliance	Yes	Inline	Local	Delta Diff	No	Storage- based
Quantum DXi	Quantum	VTL, NAS	Integrated	Appliance	Yes	Both	Local	Hash	Yes	Yes
SEPATON	SEPATON	VTL	Standalone	Appliance	Yes	Post-process	Global	Delta Diff + others	No	No
PureDisk Storage Unit (Only works with NBU)	Symantec	LFS	N/A	Software	Yes	Inline	Local	Hash	Yes	Yes
Sun StorageTek VTL	Falconstor	VTL	Integrated	Appliance	Yes	Post-process	Global	Hash	Yes	Yes

VTL, NAS, or LFS Is the target a virtual tape library (VTL), Network Attached Storage (NAS), or a locally attached filesystem (LFS)

Integrated or Standalone If the VTL will copy its virtual tapes to physical tapes in a library connected behind it, the it is considered an :Integrated tape library. If you must use your backup software's traditional way for copying backups from one tape to another in order to copy data from virtual tape to physical tape, then it's a Standalone VTL.

Appliance, Gateway, or Software An appliance is a complete system containing a head and all necessary disk. A gateway is a server head provided by the vendor that is ready to plug into disk of your choice. Software products do not provide any hardware, although they may specify certain system types that are certified with their software.

De-dupe Does the product identify and eliminate redundant data

Inline If the product does deduplication, is the redundant data identified and eliminated before it ever hits disk (i.e. inline, also known as in-band or synchronous), or does the product write the backup to disk, then have a separate process read and deduplicate it (post-process)?

Dedupe Domain The bigger the amount of data that is compared against each other, the better the deduplication ratio, especially in a multi-appliance environment. Many deduplication appliances dedupe data only against other data stored within a single filesystem or in the storage connected behind a single head (i.e. local dedupe.) Some dedupe appliances can accept data from multiple heads and still de-dupe all data against all other data, regardless of which head it comes into (i.e. global dedupe).

Dedupe method One of the methods for identifying redundant data is the creation of a SHA-1 or MD5 hash. If two blocks of data have the same hash, they are deemed identical. For a heated debate on the merits of the "hash collision" issue, check out this thread in the NetBackup forum. Another method is delta differencing, where tonight's backups are simply lined up against last night's backups and compared bit-for-bit. This is a very old technique - the difficulty now is in using this methodology against backups from various sources. (Traditional delta differencing systems did so within the backup software.)

Open-Storage API To say YES in this column, the vendor must support Symantec's Open-Storage API, which is designed to control intelligent disk target devices from NetBackup.

[ 本帖最后由 mantuntun 于 2009-6-23 14:48 編輯 ]

xzc999

這個(gè)夠牛
頂

無(wú)牙

太牛了

brucewoo

不錯(cuò),很詳細(xì).

jadge

好多天不發(fā)帖了,這個(gè)不頂也不行,牛帖!

mantuntun

呵呵，有些NA的產(chǎn)品可能因?yàn)檫�沒(méi)有release或者其他原因，不過(guò)排得上號(hào)的基本都上榜了。EMC高下DD的目的無(wú)非是為了拿到他的那部分市場(chǎng)分額，技術(shù)上EMC已經(jīng)擁有足夠多的dedup產(chǎn)品了。

夜的小宇宙

原帖由 mantuntun 于 2009-6-24 09:35 發(fā)表
呵呵，有些NA的產(chǎn)品可能因?yàn)檫�沒(méi)有release或者其他原因，不過(guò)排得上號(hào)的基本都上榜了。EMC高下DD的目的無(wú)非是為了拿到他的那部分市場(chǎng)分額，技術(shù)上EMC已經(jīng)擁有足夠多的dedup產(chǎn)品了。

樓主強(qiáng)大~�。。。。。。�

childe

這個(gè)真的是巨牛啊。

andy12345678

不得不回，太牛了。

minechina

牛氣沖天!!