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{{Distinguish2|[[List of French words and phrases used by English speakers#D|Du jour]]}}
{{wiktionary}}
'''''De jure''''' (in [[Classical Latin]] '''''de iure''''') is an expression that means "<!---In Latin de means 'about...' or 'concerning...' etc., NOT 'of'--->concerning [[law]]", as contrasted with ''[[de facto]]'', which means "<!---In Latin de means 'about...' or 'concerning...' etc., NOT 'of'--->concerning fact".


The terms ''de jure'' and ''de facto'' are used instead of "in principle" and "in practice", respectively, when one is describing [[politics|political]] or legal situations.


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In a legal context, ''de jure'' is also translated as "concerning law". A practice may exist ''de facto'', where for example the people obey a contract as though there were a law enforcing it, yet there is no such law. A process known as "[[desuetude]]" may allow ''de facto'' practices to replace obsolete laws. On the other hand, practices may exist ''de jure'' and not be obeyed or observed by the people.
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=Examples=


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It is, in fact, possible to have multiple simultaneous ''de jure'' legalities that are not represented in fact. [[Egypt#Modern_history|Between 1805 and 1952]], the ruling dynasty of Egypt were ''de jure'' viceroys of the Ottoman Empire, but were ''de facto'' independent rulers who maintained a polite fiction of Ottoman suzerainty. However, from about 1875, they had only ''de jure'' rule over Egypt, as they had by that point become a British puppet state. Thus, Egypt was, by Ottoman law, ''de jure'' a province of their empire, by Egyptian law ''de jure'' independent, but was ''de facto'' part of the British empire.


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==See also==
* [[De facto]]
* [[List of Latin phrases]]


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= ISCSI! Target! =
{{Unreferencedsection|date=May 2009}}
iSCSI specification refers to a storage resource located on an iSCSI server (more generally, one of potentially many ''instances'' of iSCSI storage nodes running on that server) as a ''target''. An iSCSI target usually represents hard disk storage that works over the IP or [[Ethernet]] networks.
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"iSCSI target" should not be confused with the term "ISCSi" as the latter is a protocol and not a storage server instance.


As with initiators, software to provide an iSCSI target is available for most mainstream operating systems. Common deployment scenarios for an iSCSI target include:
[[af:De jure]]

[[ar:دي يوري]]
====Storage array====
[[az:De-yure]]

[[bn:দে জুরি]]
In a data center or enterprise environment, an iSCSI target often resides in a large storage array, such as a [[EqualLogic]], [[NetApp filer]], [[EMC Corporation|EMC]] NS-series or a [[Hitachi Data Systems|HDS]] HNAS [[computer appliance]]. A storage array usually provides distinct iSCSI targets for numerous clients.<ref>[http://roc.cs.berkeley.edu/papers/inet-computing.pdf Architecture and Dependability of Large-Scale Internet Services] David Oppenheimer and David A. Patterson, Berkley, ''IEEE Internet Computing'', September–October 2002.</ref>
[[be-x-old:De jure]]

[[bs:De jure]]
====Software target====
[[bg:Де юре]]

[[ca:De iure]]
Nearly all of the modern mainstream operating systems (like various BSD clones, many if not all [[Linux]] distributions, [[Solaris (operating system)|Solaris]] and [[OpenSolaris]]) along with some specific-purpose operating systems running as iSCSI targets or as an add-on to existing server operating system platforms can provide iSCSI target functionality implemented purely in the software.
[[cs:De iure]]

[[da:De jure]]
[[List of SAN network management systems]]
[[et:De jure]]

[[es:De iure]]
==== Logical Unit Number ====
[[eu:De iure]]
In [[SCSI]] terminology, [[Logical Unit Number|LUN]] stands for ''logical unit number''. A LUN represents an individually addressable (logical) SCSI device that is part of a physical SCSI device (target). In an iSCSI environment, LUNs are essentially numbered disk drives. An initiator negotiates with a target to establish connectivity to a LUN; the result is an iSCSI connection that emulates a connection to a SCSI hard disk. Initiators treat iSCSI LUNs the same way as they would a raw SCSI or IDE hard drive; for instance, rather than mounting remote directories as would be done in [[Network File System (protocol)|NFS]] or [[CIFS]] environments, iSCSI systems format and directly manage filesystems on iSCSI LUNs.
[[fa:دوژور]]

[[fr:Liste des locutions latines#D]]
In enterprise deployments, LUNs usually represent slices of large [[RAID]] disk arrays, often allocated one per client. iSCSI imposes no rules or restrictions on multiple computers sharing individual LUNs; it leaves shared access to a single underlying filesystem as a task for the operating system.
[[gl:De iure]]
[[ko:데 유레]]
[[hy:Դե յուրե]]
[[hr:De jure]]
[[id:De jure]]
[[it:De iure]]
[[he:דה יורה]]
[[ka:დე იურე]]
[[lv:De jure]]
[[li:De jure]]
[[hu:De jure]]
[[mk:Де јуре]]
[[ms:De jure]]
[[nl:De jure]]
[[ja:デ・ジュリ]]
[[no:De jure]]
[[nn:De jure]]
[[pl:De iure]]
[[ro:De jure]]
[[ru:Де-юре]]
[[simple:De jure]]
[[sk:De iure]]
[[sr:De jure]]
[[sh:De jure]]
[[fi:De jure]]
[[sv:De jure]]
[[tl:De jure]]
[[th:โดยนิตินัย]]
[[tr:De jure]]
[[uk:Де-юре]]
[[vi:De jure]]
[[zh:De jure]]

Revision as of 20:04, 7 January 2011

File:Nujabes - Metaphorical Music.jpg

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Header text Header text Header text
Example Example Example
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ISCSI! Target!

iSCSI specification refers to a storage resource located on an iSCSI server (more generally, one of potentially many instances of iSCSI storage nodes running on that server) as a target. An iSCSI target usually represents hard disk storage that works over the IP or Ethernet networks. "iSCSI target" should not be confused with the term "ISCSi" as the latter is a protocol and not a storage server instance.

As with initiators, software to provide an iSCSI target is available for most mainstream operating systems. Common deployment scenarios for an iSCSI target include:

Storage array

In a data center or enterprise environment, an iSCSI target often resides in a large storage array, such as a EqualLogic, NetApp filer, EMC NS-series or a HDS HNAS computer appliance. A storage array usually provides distinct iSCSI targets for numerous clients.[1]

Software target

Nearly all of the modern mainstream operating systems (like various BSD clones, many if not all Linux distributions, Solaris and OpenSolaris) along with some specific-purpose operating systems running as iSCSI targets or as an add-on to existing server operating system platforms can provide iSCSI target functionality implemented purely in the software.

List of SAN network management systems

Logical Unit Number

In SCSI terminology, LUN stands for logical unit number. A LUN represents an individually addressable (logical) SCSI device that is part of a physical SCSI device (target). In an iSCSI environment, LUNs are essentially numbered disk drives. An initiator negotiates with a target to establish connectivity to a LUN; the result is an iSCSI connection that emulates a connection to a SCSI hard disk. Initiators treat iSCSI LUNs the same way as they would a raw SCSI or IDE hard drive; for instance, rather than mounting remote directories as would be done in NFS or CIFS environments, iSCSI systems format and directly manage filesystems on iSCSI LUNs.

In enterprise deployments, LUNs usually represent slices of large RAID disk arrays, often allocated one per client. iSCSI imposes no rules or restrictions on multiple computers sharing individual LUNs; it leaves shared access to a single underlying filesystem as a task for the operating system.

  1. ^ Architecture and Dependability of Large-Scale Internet Services David Oppenheimer and David A. Patterson, Berkley, IEEE Internet Computing, September–October 2002.
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