I think that you just run into : RAIC: Redundant Array of Independent Consultants.
Yechiel Adar, Mehish Computer Services [EMAIL PROTECTED] > -----Original Message----- > From: Mohan, Ross [SMTP:[EMAIL PROTECTED]] > Sent: Wed, January 16, 2002 2:01 AM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > Yea, they were talking about clustering all right. > > sure > uh huh > right > Whatever! > > -----Original Message----- > From: Deshpande, Kirti [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 15, 2002 6:26 PM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > > New one I heard at our local Oracle office : > > RAIP = Redundant Array of Independent Processors > > (Those guys were talking about NT Clustering... ) > > > > -----Original Message----- > From: Mohan, Ross [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 15, 2002 4:41 PM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > > SAME = 'stripe and mirror everthing' > BHT = 'butylated hydroxytoluene' > > -----Original Message----- > From: Deshpande, Kirti [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 15, 2002 5:29 PM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > > Great ! Thanks for the info.. > > - Kirti > > -----Original Message----- > From: Nick Wagner [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 15, 2002 3:49 PM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > > > good question... RAID and WALF -- see below. SAME... no > idea... > > RAID - (from > <http://www.uni-mainz.de/~neuffer/scsi/what_is_raid.html> ) > What does RAID stand for ? > In 1987, Patterson, Gibson and Katz at the University of > California Berkeley, published a paper entitled "A Case for Redundant > Arrays of Inexpensive Disks (RAID)" . This paper described various types > of disk arrays, referred to by the acronym RAID. The basic idea of RAID > was to combine multiple small, inexpensive disk drives into an array of > disk drives which yields performance exceeding that of a Single Large > Expensive Drive (SLED). Additionally, this array of drives appears to the > computer as a single logical storage unit or drive. > > The Mean Time Between Failure (MTBF) of the array will be > equal to the MTBF of an individual drive, divided by the number of drives > in the array. Because of this, the MTBF of an array of drives would be too > low for many application requirements. However, disk arrays can be made > fault-tolerant by redundantly storing information in various ways. > > Five types of array architectures, RAID-1 through RAID-5, > were defined by the Berkeley paper, each providing disk fault-tolerance > and each offering different trade-offs in features and performance. In > addition to these five redundant array architectures, it has become > popular to refer to a non-redundant array of disk drives as a RAID-0 > array. > > WAFL (from the NetApp website) > The WAFL (Write Anywhere File Layout) file system and the > following features deliver enterprise-class availability: > Consistency points. Always a consistent file-system > image on disk, even after unplanned shutdowns. Virtually eliminates the > need to run time-consuming file-system checks. > > Snapshot technology. Snapshots are > near-instantaneous, transparent, read-only, online copies of the active > file systems. Up to 31 Snapshots can be maintained for each data volume. > Users can quickly recover deleted or modified files without administrative > assistance or restore from tape backup. The Snapshot function requires > minimal disk space and causes no disruption of service. Snapshots can be > backed up to other media while users are modifying the active file system > to minimize business disruption. > > SnapRestore software. Allows any system to revert > back to a specified data volume Snapshot for instant file-system recovery. > Terabytes can be recovered in minutes, rather than hours, without going to > tape. The software also greatly facilitates scenario testing as well as > providing disaster recovery and virus protection. > > Easy, cost-effective clustering. Safeguards against hardware > failures by automatic filer takeover. Gives users continuous access to > data. > > SnapMirror software. Provides remote mirroring at high > speeds over a LAN or WAN. The asynchronous mirroring can be used for > disaster recovery, replication, backup, or testing on a nonproduction > system. > > -----Original Message----- > From: Deshpande, Kirti [ > <mailto:[EMAIL PROTECTED]>] > Sent: Tuesday, January 15, 2002 1:23 PM > To: Multiple recipients of list ORACLE-L > Subject: RE: SAME, WAFL and RAID > > > Good idea.. > > All I know about WAFL is the House where breakfast is served > ;) > > - Kirti > > -----Original Message----- > Sent: Tuesday, January 15, 2002 2:57 PM > To: Multiple recipients of list ORACLE-L > > > May I make a suggestion? It would be helpful if posters > would expand > acronyms the first time they use them. I, at least, have no > idea what > WAFL is. Thanks. > > > --- Bill Becker <[EMAIL PROTECTED]> wrote: > > Hello, > > > > I am looking for any pointers to white papers, etc. > > that discuss the differences/similarities among > > WAFL, SAME and RAID > > __________________________________________________ > Do You Yahoo!? > Send FREE video emails in Yahoo! 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