With 2 of my hard disks approaching the end of their MTBF, think I'd start moving the important data everything onto duplicate External Hard disks.
Already one of my HDD kaput... luckily it's just the applications HDD.
why is RAID 1 better since usuable space is 50%? The performance and redundancy advantage by sacrificing just 16% or 25% efficiency is perceived as more worth the money. RAID1 is preferred for almost all critical application as it's faster (No data parity calculation and striping involved) and offers total redundancy. For most Raid 1 implementation(Not All), you can always take out the hard drive, put it on another system and starts reading/booting from it. You can't do the same for RAID5 Raid Group drives.
Really feel like going down to my friend's place to collect the 2 Sun 440s and 12 x 40GB SAN back home to use for backup. Too heavy though... noisy too.
That's why now I use 2 x 500GB Ext HDD(under-1-roof) & plus 1 x 500GB Ext HDD(at another Roof/locationcumblesome at times).
Last edited by blueskye168; 20th July 2007 at 03:28 PM.
Anything that can take pictures...happy already lor...(..but...Hasselblad_H5D-50 as my Workhorse)
Last edited by Hacker; 20th July 2007 at 06:44 PM.
Cost Effectiveness wise, Raid 5 will always be the winner. Corporates wouldn't use them if they are otherwise. This is always true if the administration costs, Drive interface port costs, electricity costs and cooling costs that are required are not higher than buying the additional disk.
What about something that is incorruptable when stored properly, able to be improved years from now, readable by any computer, doesn't crash at all and lasts around 150+ years?
Like film maybe?
Sad to say.. I just lost over 300 gig of hdd data last week. The hdd gave no warning at all. Now I have installed the SMART on my WinXP OS to detect any likely harddisk failure. I just lost the entire year photos taken since last sep... All the thanks to no harddisk space for backup. ..
other than backing up on multiple hdd, which i'm already doing, is there hdd integrity check programs that can run on external hdds?
a fear i have is that when the original data becomes corrupted, and unknowingly it overwrites the existing backup, transferring over the corruption. can it happen that way?
I think u're referring to storage virtualization rather eh?
Like what DP said...
Get more HDDs and do regular backups, is more important then investing a raid system which require some technicial knowledge plus time for setting up and fine tuning it.