On Tue, 2002-01-29 at 03:44, northstone wrote: > ------=_NextPart_000_0055_01C1A8BA.5954D600 > Content-Type: text/html; charset="iso-8859-1" > Content-Transfer-Encoding: quoted-printable > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
Naughty, naughty. Tell Outlook Express to send email in plain text format. HTML mail to mailing lists is rude. > Can anybody tell met what is the different between : > > clustering Multiple computers used to perform a task. Tends to involve either load-balancing (spreading the task across machines), failover (when the primary machine fails operation transparently fails over to another machine) or both. > mirroring Quite simply have two disks instead of one. Whatever you write to the disk gets written to both. If one disk fails, keep using the other. > raid RAID : Redundant Array of Inexpensive Disks. RAID 0 : Mirroring. Requires 2 disks. RAID 1 : Striping. Data is striped across disks. RAID 5 : Stripe + parity : data is striped across disks, if a disk fails data loss is avoided because the missing data can be reconstructed from the contents of the other disks. > > * it will be good if you can draw in a table I'm sure it would, but there you go. I bet you can drive Word well enough to do that. > > - I want two server to be serve in the LAN. there are server A and server B, > When user requesting data or store data , A and B will do the job. > > - I want A and B to be like the conditions below when client do storing and >requesting : > > a] When A is requested for storing, A will store the data and meanwhile, B will have >the > duplicate. > b] When B is requested for storing, B will store the data and meanwhile, A will have >the > duplicate > c] When A is busy,request will be transfer to B to do the job. > d] When B is busy,request will be transfer to A to do the job. > e] When A is down, B will serve the request. > f ] When B is down, A will serve the request. > > any good suggestion for that? This looks like a homework assignment. You may want to visit www.linux-ha.org. There are many resources there. Peter. -- Peter Whysall [EMAIL PROTECTED]
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