Create The Spooler And Cache File Systems - Dell DX6000 Deployment Manual

Dell DX Object Storage – File Gateway Deployment Guide
NOTE: Services should show as not running for all of the above. If they are running, they must be
disabled.
NOTE: If any of these commands fail (other than saying that the service is not running), this indicates
that the required software package was not installed. See Create the YUM Repository and Install
Packages. Make sure the RHEL6 iso is still mounted. If it is not mounted, run the following command:
# mount –o loop,ro /root/RHEL-6.0-x86_64.iso
1. Copy the CFS installation zip file to /root and extract it.
2. Change directory to the newly extracted directory tree.
3. Install the CFS package.
# ./installDXCFS.sh

Create the Spooler and Cache File Systems

The spooler is a shared file system that serves as a spool/cache for files before they are written to DX
Object Storage. The spooler also contains journals and file revision information. Depending on the
solution, the spooler can be on the CFS server itself (single-server solution) or on an external storage
device (failover solution).
As the spooler grows, unnecessary spooler entries are eventually evicted. Also, if the files are needed
for later reads, they will be accessed directly from the spooler, if the files are still on the spooler.
NOTE: Each CFS share must have its own dedicated spooler partition and its own cache
eviction/management process.
If the spooler partition is shared between CFS shares, there will be eviction conflicts between the
processes. Because of this restriction, some customers mount subfolders inside a single CFS share via
CIFS. You need to make a new CFS share for any of the following scenarios:

When you need to specify different lifepoint policies or custom metadata for the mount. For
example, PACS data has a retention period of 15 years, whereas emails are kept for 3 years. etc...

When your applications have different usage patterns ( lots of small files vs lots of very large file
transfers ). The spooler has a max files configuration set by default to 100000 , eviction is based on
partition used capacity as well as max files, this was added to prevent a 100Gb spooler partition
from filling up with 50M small files.

When you want to isolate the performance impact of your applications from each other
NEXT STEP: Create the Spooler and Cache File Systems
/root/RHEL6
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