Promise VTrak: Configuring for Optimal Performance (E5000 Series)
Configure Promise VTrak RAIDs for best performance using the guidelines in this article.
These scripts are inteded to be used for  Xsan and Quantum StorNext Deployments
- For the Promise VTrak E5000 series, the scripted options below are now built into the Promise WebPAM PROe. interface.
- For the Promise VTrak E5000 & J5000 Series, create and import the desired script, as described below.
- Some of the configuration scripts configure Global or Dedicated Revertible Spare Drives. In the event that a drive is replaced, data will be migrated from the Spare Drive to the replacement drive. Performance may be impacted for the duration of the migration procedure.
Note: All these scripts have ALUA (Asymmetric Logical Unit Access) enabled by default. If all your host's operating systems are ALUA compliant; you may leave ALUA enabled.
In the case that you need to disable ALUA due to your operating system's non-compliancy, following the instructions below.
Locatealua=enable:
ctrl -a mod -s "lunaffinity=enable, alua=enable, adaptivewbcache=enable, hostcacheflushing=disable, forcedreadahead=enable"
Modify the alua variable in the script before importing:
ctrl -a mod -s "lunaffinity=enable, alua=disable, adaptivewbcache=enable, hostcacheflushing=disable, forcedreadahead=enable"
Note – Please ensure that you use our default 64KB stripe size when creating and configuring your LUNs for optimal performance. Write performance may be affected if the administrator deviates from using a 64KB stripe size for their data LUNs for Xsan or Stornext.
Configure via Script
Configures a RAID Controller that will be used as an Xsan or StorNext Volume. Configures arrays to be used as a metadata LUN, two data LUNs, and two spares. Each Xsan or StorNext volume must contain one metadata LUN.
RAID Controller and SAS-connected Expansion Chassis: Xsan (Metadata and Data) - E5600f + J5600s
Configures a RAID Controller and SAS-connected Expansion Chassis that will be used as an Xsan or StorNext volume. Configures arrays to be used as a metadata LUN, four data LUNs, one scratch LUN, and three spares. Each Xsan or StorNext volume must contain one metadata LUN.
RAID Controller and SAS-connected Expansion Chassis: Xsan (Metadata and Data) - E5600f + (3) J5600s
Configures a RAID Controller and (3) SAS-connected Expansion Chassis that will be used as an Xsan or StorNext volume. Configures arrays to be used as a metadata LUN, eight data LUNs, three scratch LUNs, and five spares. Each Xsan or StorNext volume must contain one metadata LUN.
RAID Controller: Xsan (Metadata and Data) - E5800f
RAID Controllers and SAS-connected Expansion Chassis: Xsan (Metadata and Data) - E5320f + (2) J5600s
Configures a RAID Controller and (2) SAS-connected Expansion Chassis that will be used as an Xsan or StorNext volume. Configures arrays to be used as a metadata LUN, six data LUNs, and six spares. Each Xsan or StorNext volume must contain one metadata LUN.
