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hard drive failure
1 Topic
Is my hard drive toast? Massive Current Pending Sector count + sluggish performance of ReadyNAS.
Morning, I have a ReadyNAS Ultra 2 running RAIDiator 4.2.27 using RAID Level 1. As well as providing storage for a lot of media, It was also being used as a Time Machine backup from my macbook and I noticed that the time taken for a backup to complete greatly lengthened nearly two weeks ago. So checking the logs, I have the first appearance of this message: Detected increasing pending sector count[65535] on disk 2 [WDC WD30EZRX-00MMMB0, WD-WCAWZ1421563]. This often indicates an impending failure. Please be prepared to replace this disk to maintain data redundancy. on Oct.10 with further instances after, although not every day and with the number decreasing albeit by very little (latest log error message has the figure at 65515). Checking this thread on the NETGEAR forums and running SMART, the Reallocated Sector Count is zero. My questions are: since the HDD isn't even able to remap the sector, it's a goner isn't it? I have already ordered a replacement - is it best practice with a NAS to have two HDD that are exactly the same make if possible? The two 3TB HDDs currently in the ReadyNAS are WD Caviar Green (WD30EZRX), the replacement will be a 3TB WD Green (WD30EURS); I guess as long as both HDDs are of the same capacity, it doesn't matter. is the slow and sluggish performance of my ReadyNAS a result of the problems with disk 2 in my array as it continually attempts to re-write or remap the bad sectors without success? I've stopped using it as a TM backup as I was already using an external HDD for an additional disk to backup using TM to, as although it would eventually complete, it would take 2+ hours to complete. lastly, when I've got my replacement drive, is it simply a matter of swapping the HDD in the disk 2 bay and it ought to just start copying all the data across from disk 1? Thanks in advance for any replies.Solved