hard drive upgrade (replace existing)

I only saw this message after I had started upgrading my Readynas NV+ and was wondering why it was so damn slooooooow to expand.

I had updated my firmware before upgrading my 4 500Gb disks to 4 1.5Tb disks.

My experience was as follows:

Each disk swap took about 4.5 hours to initialise and 2.5 hours to resync. The total of 7 hours was very consistent across the 4 disks. Hardly any variation at all.

The volume expansion was worrying. It took place offline - despite me having the latest firmware installed. GRRRRR. At one point the expansion % was increasing so slowly I estimated it was going to take over 60 hours to complete... but then it 'suddenly' (I was out at work and didnt expect it to finish) it finished and caught me unawares! In total the expansion took around 15 hours and now I am sitting with available space of 4114Gb.

M

SteinyD wrote:

For the record and hopefully for the benefit of someone expanding their system in the future, it took a total of Friday at 18:33-22:46 for Disk 1, Sat 06:13-14:37 for disk 2, Sat at 18:05-Sun 02:27 for disk 3, Sun 7:54-19:13 for disk 4. The expansion process took from Sat at 20:46-Tues at 01:55. Here are my timings from the logs. Times are rounded to nearest 1/4 hour. The time per disk is from removal of former 750GB drive, insertion of new 1.5TB drive and time until the system was reported as redundant (initialization and sync complete). The expansion process is indicated as the time following the system reporting it was redundant after the 4th drive replacement and until I had the system back and it was reported as fully expanded. Disk 1 - 9 1/4 hours Disk 2 - 10 1/2hrs Disk 3 - 8 1/2 hours Disk 4 - 12 hrs Expansion - 53 hrs SYSTEM UNAVAILABLE - 53 HOURS (unacceptable) TOTAL ELAPSED TIME TO COMPLETE 4 DRIVE REPLACE / EXPANSION: 93 1/4 hours Total available space on 4 - 1.5TB drives = 4114 GB -cut-