On Friday 19 February 2010 19:29:48 slug-requ...@slug.org.au wrote: > >> I want to set up a pair of 1 TB drives on an HP DL145 G3 and I'm looking > >> for suggestions as to the best way to partition them. > >> > >> Would I be best using software RAID and LVM? Given that it's a fairly > >> busy machine (mail server for 40+ users) I'd like to achieve: > >> > >> 1) Speed > >> 2) Reliability > >> 3) Ease of maintenance. > >> > >> Anyone care to take a punt at a layout? > > > > In spite of Seagate's paper (... More than an interface) cautioning that > > multiple disks in a machine will make them fail quicker and be slower > > nobody seems to heed this. > > Multiple spindles does increase the number of hardware failures your system > will have. Using redundant RAID makes your system tolerant of hardware > failures. Balancing these can be complex. :) > > > Slower, though ... is a bit of a strange claim. Not because it is false, > but because the answer is complex: you can, for example, double read speed > and halve write speed, using a two disk RAID 1 array ... in the ideal > case. > > Is that slower, or faster, or both?
Their logic went like this: disk1 seeks to a track and the jolt knocks disk2 off track so disk2 seeks knocking disk1 off track back and forth until both disks are safely on track. Then 1 disk seeks to the next track ... James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
