Re: [HELP] RAID chunk-size - alternatives

2002-04-05 Thread Anthony DeRobertis
On Friday, April 5, 2002, at 03:34 AM, Russell Coker wrote: Of course. As we all know SCSI cables never break. There must be something about the IDE command-set which causes copper wires to corrode. :-# (I know this is a joke, but) actually there is. IDE has a wonderful feature of only

Re: [HELP] RAID chunk-size - alternatives

2002-04-05 Thread Russell Coker
On Fri, 5 Apr 2002 12:25, Anthony DeRobertis wrote: Of course. As we all know SCSI cables never break. There must be something about the IDE command-set which causes copper wires to corrode. :-# (I know this is a joke, but) actually there is. IDE has a wonderful feature of only

Re: [HELP] RAID chunk-size - alternatives

2002-04-02 Thread Alvin Oga
hi ya russell On Tue, 2 Apr 2002, Russell Coker wrote: On Tue, 2 Apr 2002 13:48, Alvin Oga wrote: chunk size does NOT matter for raid5... Chunk size does not matter for RAID-1, but does matter for other RAID levels. humm ..thought was the otehr way ... time for me to go look at some

Re: [HELP] RAID chunk-size - alternatives

2002-04-02 Thread Dave Sherohman
Since I'm feeling bored at the moment... On Tue, Apr 02, 2002 at 02:29:28PM -0800, Alvin Oga wrote: typically a minimum of 2 disks used for raid0 or raid1... raid1(mirroring) protects against one disk failure ( one disk's capacity is used as a redundant copy and not for user)

Re: [HELP] RAID chunk-size - alternatives

2002-04-02 Thread Russell Coker
On Wed, 3 Apr 2002 00:29, Alvin Oga wrote: Chunk size does not matter for RAID-1, but does matter for other RAID levels. humm ..thought was the otehr way ... time for me to go look at some raid source code i suppose .. when time permits The chunk size determines physical location of the

Re: [HELP] RAID chunk-size - alternatives

2002-04-02 Thread Russell Coker
On Wed, 3 Apr 2002 01:15, Dave Sherohman wrote: Don't know where you got the typically 5 disks bit from. RAID5 costs you one drive's worth of capacity. Also, if I were to set up a 5-disk RAID5 for critical data, I'd go with 4 active disks, plus one spare. I've noticed that 5 disks seems

Re: [HELP] RAID chunk-size - alternatives

2002-04-02 Thread Alvin Oga
hi ya dave ypppers on your comments... another major point... - raid protects aginst disk failure ... but if raid wont come back online ... ( not mountable ) ... you lose all data ... -- make sure your data is backed elsewhere and tested On Tue, 2 Apr 2002, Dave