dbserver, RAID-0, stripe

Инфа:

[root@dbserver ~]# smartctl -i /dev/sdb
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.39-400.215.10.el5uek] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model: WDC WD1002F9YZ-09H1JL1
Serial Number: WD-WMC5K0D5T51D
LU WWN Device Id: 5 0014ee 003ed344d
Firmware Version: 01.01M03
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Fri Feb 27 18:44:27 2015 KRAT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

[root@dbserver ~]# smartctl -i /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.39-400.215.10.el5uek] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model: WDC WD1002F9YZ-09H1JL1
Serial Number: WD-WMC5K0D1A6A3
LU WWN Device Id: 5 0014ee 059418b6d
Firmware Version: 01.01M03
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Fri Feb 27 18:44:52 2015 KRAT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

/dev/sda - это HDD Western Digital Se WD1002F9YZ 1TB
fdisk /dev/sda - cоздан раздел /dev/sda1

/dev/sdb - это HDD Western Digital Se WD1002F9YZ 1TB
fdisk /dev/sdb - cоздан раздел /dev/sdb1

Создан RAID-0 (из двух разделов, последовательность HDD по серийным номерам следующая: 1) WD-WMC5K0D5T51D; 2) WD-WMC5K0D1A6A3):
mdadm --create --verbose /dev/md0 --level=stripe --raid-devices=2 /dev/sdb1 /dev/sda1

После перезапуска системы собирается автоматически (по рекомендации из raid.wiki.kernel.org):
mdadm --detail --scan >> /etc/mdadm.conf

При необходимости можно собрать вручную:
mdadm --assemble /dev/md0 /dev/sdb1 /dev/sda1

fdisk /dev/md0 - создан раздел /dev/md0p1 и отформатирован под ext3:
mkfs.ext3 /dev/m0p1

Точка монтирования:
mount -t ext3 /dev/md0p1 /mnt/hd2tb
+ прописка в /etc/fstab