Re: multi-TB diskarrays ???
hi ya michael
> "Michael D. Schleif" wrote:
> >
> > Having never done this with linux, I'm asking this at the lowest
> > possible level to facilitate very exhaustive research:
> >
> > What do I need to know to design a debian fileserver attached to a 4-5TB
> > diskarray?
>
> Yes, I am vague with this request.
nothing special about it being debian...
-- with 4TB of data... you should be more worried about backups
and redundancy ...
- how long can that 4TB server be offline due to disk failures
or other cpu/mb/memory failures
-- how to backup 4TB of data ... and keep data in sync
- should be automated .... disk-to-disk copy or some like
disk-to-tape copies
- have at least 3 servers with the same data to make sure
you do NOT lose any data ... due to drunk electrons going
over the cliff
-- test any and all debian packages on a test box ..before applying
any patches... as you cannot afford to lose 4TB of data ??
( test on a 500GB raid5 or something )
--- better testing --->> better reliability
-- you would obviously(?) need raid5...
- scsi3 -->> largest disks is say 180GB or 360GB scsi
- ide --> largest is about 200GB some are 240G or 300GB
( bleeding edge means you'd know what to do if it dont work )
-- what is your budget ??? that would dictate ide vs scsi
-- you would obviously need ext3 or reiserfs ...
- you dont want to be sitting there fsck'ing your 4TB of data
-- hardware raid5 or software raid5 ???
-- depends on what you are doing for the extra 1,000 in hw costs
( do you notice any performance difference ??
-- the $1,000 hw raid can be used to buy a 2nd set of 1TB of
backup disks instead ( more important ?? )
-- testing your finished 4TB server ....
-- pull the power cord
-- see what kind of problems you get...
-- disconnect one of the disks ... see if boots in degraded mode
-- replace the disk in the 4TB server ... see if it will resync
itself ...
-- san disks of 1TB system is too too much $$$ ( $1M per TB ?? )...
-- simple raid would suffice :-)
-- lots of work you got ahead of you..
http://www.Linux-Backup.net -- backup stuff
http://www.Linux-1U-Raid5.net --- raid stuff
have fun
alvin
Reply to: