Getting Started Guide

Preparing Shared Storage 21
of data residing on each disk in the stripe. Here the stripe element size
is 64 KB and the stripe size is 256 KB.
Use the following formula to set the value above:
Stripe Element Size in Sectors = Stripe Element Size in KB * 2 First
Sector = Stripe Element Size in Sectors
NOTE: The above formula assumes that 1 Sector = 512 Bytes or 0.5 KB.
Set the above value to the following, if the SES/SS was left at the Storage
Controller’s default value:
– For Dell PowerVault MD30xx/MD30xxi, set First sector to: 128
(default 64 KB * 2)
– For Dell PowerVault MD32xx/MD32xxi, set First sector to: 256
(default 128 KB * 2)
– For Dell EqualLogic PS-Series, set First sector to: 128 (default 64 KB *
2)
If the SES/SS for the disk/Volume/VD is set to a non-default value of the
storage array, for example 512KB in case of MD32xx, set the First sector
value to 1024.
Last sector or +size or +sizeM or +sizeK (1024-xxxxx, default xxxxxx):
<Enter default value or return key> # Default Value so the single
partition spans the entire disk
Command (m for help): wq # write and quit
The system displays the following message:
The partition table has been altered!Calling
ioctl() to re-read partition table.Syncing disks.
If you get a warning message instead saying the kernel still reads the old
partition table, then follow step 3 for the kernel to be able to re-read the
new partition table.
2 Repeat step 1 for all the disks that need to be aligned.
3 Type the following to re-read the partition table and to be able to see the
newly created partition(s)
#> partprobe Or
Book.book Page 21 Tuesday, July 26, 2011 11:33 PM