How to setup SmartDisk to use independent chunk index volume
1/ make sure that the disk drive hardware configuration is suitable to check this see URL below for help in deciding this:
https://support.quest.com/SolutionDetail.aspx?id=SOL104047
Note: in nut shell raid 5 ok for stage and store but the chunk index requires minimum of a mirrored pair and if possible stripped mirrors.
2/ Install SmartDisk supplying installation, stage and store locations
Note: Once the installation is complete DO NOT add SmartDisk to NetVault yet.
We now want to add the index disk in this case we call it D:\Index to do this use the following command:
smartdisk config --add --volume D:\Index --deny storage --deny staging --favour "disk index" --favour "chunk index"
Note: for help with syntax type smartdisk config
2/ Now we need to modify the store volume not to be used for chunk index see the following example below where store volume is located E:\store :
smartdisk config --update --volume E:\store --deny staging --deny "chunk index" --favour storage --deny "disk index"
Note: when you add further store or stage volumes you must use the deny and favour options to make sure that the desired data type is written to the volume. Never put chunk index on stage or store volume if you can possibly avoid it.
3/ to check that changes have been made use the following command:
smartdisk config –show
4/ by default SmartDisk come with 32kb block size I would recommend this is changed to block size of 128 or larger.
to set block size to 128 use the following commands:
smartdisk config --update --webdav 37453 --block-size 131072
smartdisk config --update --ndmp --block-size 131072
Note: do not take it for granted that the bigger the block size the faster the transfer rate as this is not true and if the block size is to big it will have the opposite effect and slow down transfer rates. You may need to try 128, 256 kb etc and see which works best for your network.
5/ Now we can add the SmartDisk to NetVault.
Note : with this configuration stage and store share the same disk just use different folders this can be done or independent volumes can be used for staging and store but I would always recommend chink index has its own volume
