2008/11/12 lee <[EMAIL PROTECTED]>: > On Tue, 11 Nov 2008 19:54:11 -0600 > Mark Allums <[EMAIL PROTECTED]> wrote: [snip] >> If you >> have a RAID 50 running on 20 SAS drives and 4 hot spares, you better >> buy quite a few for cold spares, you are going to lose a drive every >> two months. At least. > > You are saying that the age of the drives doesn't matter at all? Then if > you lose one drive out of 24 every month, that would mean that about 4% > of all drives sold are junk. The new ones you get could fail within the > first few minutes ... or not work at all. Or does this mean that it > takes about one to two months before you find out if a new drive is > junk? And why don't the drives that are junk fail in the first few > minutes or don't don't work at all?
Hey, There have been a few studies re disk drive reliability. This post links and describes some of them: http://www.mail-archive.com/[EMAIL PROTECTED]/msg14771.html (N.B. the thread is over a year old) Choice quote from the above post by Tracy R Reed: " - - There is no infant mortality phase for drives nor is there a particular age at which they tend to die (no "bathtub curve" typical for consumer products). Rate of drive failure is initially low but steadily increases as they age. " cheers, Owen. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
