Repost: Put in the wrong place first time...
I am building a new array. I am using preclear_disk.sh 1.13 and unRAID 5 b14. I am starting out with a mix of Green and Black WD drives. All
drives (except the parity which is a new 2TB Black) were in use on Windows systems before and none have ever had jumpers. I am running preclears on 4 drives at the moment.
On two of the Greens I used preclear with -A. One is a WD15EARS, the other a WD20EARX. Below are the details of preclear -t for both after the successful preclear completed.
My question/concern is that I have different Sector and I/O size for both. One shows 4k, the other 512b. Is something wrong here?
Pre-Clear unRAID Disk /dev/sdc
################################################################## 1.13
Model Family: Western Digital Caviar Green (Adv. Format) family
Device Model: WDC WD15EARS-00MVWB0
Serial Number: WD-WMAZA2511856
Firmware Version: 51.0AB51
User Capacity: 1,500,301,910,016 bytes
Disk /dev/sdc: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 64 2930277167 1465138552 0 Empty
Partition 1 does not end on cylinder boundary.
########################################################################
========================================================================
==
== DISK /dev/sdc IS PRECLEARED with a starting sector of 64
==
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Pre-Clear unRAID Disk /dev/sdd
################################################################## 1.13
Device Model: WDC WD20EARX-00PASB0
Serial Number: WD-WCAZA8415922
Firmware Version: 51.0AB51
User Capacity: 2,000,398,934,016 bytes
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdd1 64 3907029167 1953514552 0 Empty
Partition 1 does not end on cylinder boundary.
########################################################################
========================================================================1.13
==
== DISK /dev/sdd IS PRECLEARED with a starting sector of 64
==
============================================================================