Home > Workload Solutions > Oracle > Guides > Reference Architecture Guide—Accelerate Oracle Database using Oracle TimesTen as an Application-Tier Cache > Operating system settings
We applied the following operating system settings and best practices:
KERNEL=="scini*", SUBSYSTEM=="block", PROGRAM="/opt/emc/scaleio/sdc/bin/drv_cfg --query_block_device_id --block_device /dev/%k", RESULT=="5506082f2c48a3ef-c62408e300000008",SYMLINK+="oraudev/disks/OCR1", OWNER="grid", GROUP="asmadmin", MODE="0660"
Note: /dev/oracleasm/disks PATH is reserved for ASMLib. Setting this path in UDEV rule SYMLINK+=”oracleasm/disks/” will cause the Oracle Grid installation to fail.
We applied the following operating system settings and best practices:
The following table shows the Virtual Disks (VD) that were created using PERC H740p:
Purpose |
Disk size |
RAID |
Logical selector size |
Stripe element size |
Write cache policy |
Read cache policy |
Disk cache |
Operating system |
4 x 2 TB |
RAID 10 |
512 B* |
256 KB* |
Write Back* |
Read Ahead* |
Default* (Enabled) |
TimesTen Checkpoint files and logs |
16 x 1.8 TB |
RAID 10 |
512 B* |
256 KB* |
Write Through** |
No Read Ahead** |
Default* (Enabled) |
*Default property set by H740p
**Set as part of enabling FastPath feature in H740p. FastPath improves application performance by delivering high I/O per second (IOPS) for SSDs.
# cat /etc/fstab
/dev/mapper/ol-root / xfs defaults 0 0
UUID=3acfd0b0-e815-4bb1-83ff-9dff684b8dcc /boot xfs defaults 0 0
UUID=4BC6-7AFC /boot/efi vfat umask=0077,shortname=winnt 0 2
/dev/mapper/ol-home /home xfs defaults 0 0
/dev/mapper/ol-swap none swap defaults 0 0
/dev/sdb1 /ttdb xfs defaults 0 0