Anyone can help me, just want to confirm, if possible adding a disk storage that we have a RAWDATA with +ASM in our database. If possible, what would you recommend "workaround used" from us to do and the preparation. And also how long the downtime will take.
Our disk continuous to grow, need to add more disk storage in our "Sun StorageTek 3510 FC Array".
Storage having the following above;
Database : Oracle10g release 10.2.0.3
OS : SUN Solaris 10
Number of Nodes and Oracle SID Mapping : 2 instances "db01 and db02" using rawdata with +asm
Thanks in Advance;
FP
Last edited by DukeNuke2; 11-10-2010 at 07:02 AM..
Hi
We have RHEL 7.3 running from local disk and we want to move it to storage.
I am unable to find any proper procedure to do this activity. Please help. (4 Replies)
Hi,
We have a OEL5.7 installed and which has a storage attached on it.
While running application it shows poor performance for Disk IO "dm-0"
Now the question is how do I find what exactly is "dm-0"
# iostat
Linux 2.6.32-100.23.1.el5 03/10/2012
avg-cpu: %user %nice %system... (9 Replies)
Hello all,
Below is scripts to find the file following by:
30 days <- How many total file space within 30 days and not quantity
90 days
120 days
1 year
From here also I can get data space to put on PIE Chart. Following this scripts can I do some enhance from this scripts like do... (1 Reply)
I am new to the unix world. I have SunBlade 100 and A1000 Disk storage array with 12 Hard drives. I used SCSI card and SCSI cables to connect. When I do the format command,I can see disk storage as one disk instead of 12 disks as below. Could anybody can explain why?
What should I do in order... (1 Reply)
Previously , i remove the disk by
#vxdg -g testdg -k rmdisk testdg02
But i got error when i -k adddisk
bash-2.03# vxdisk list
DEVICE TYPE DISK GROUP STATUS
c0t0d0s2 auto:none - - online invalid
c0t1d0s2 auto:none ... (1 Reply)
I need help in this :confused:
there was a disk failure in one logical drive, and there was a hot spare, once the disk failed i removed it and the hot spare took its place.
now after I got a new disk, I added it in the place of the failed disk (slot #2), but the storage is not showing me any... (3 Replies)
DMC(1)DMC(1)NAME
dmc - controls the Disk Mount Conditioner
SYNOPSIS
dmc start mount [profile-name|profile-index [-boot]]
dmc stop mount
dmc status mount [-json]
dmc show profile-name|profile-index
dmc list
dmc select mount profile-name|profile-index
dmc configure mount type access-time read-throughput write-throughput [ioqueue-depth maxreadcnt maxwritecnt segreadcnt segwritecnt]
dmc help | -h
DESCRIPTION dmc(1) configures the Disk Mount Conditioner. The Disk Mount Conditioner is a kernel provided service that can degrade the disk I/O being
issued to specific mount points, providing the illusion that the I/O is executing on a slower device. It can also cause the conditioned
mount point to advertise itself as a different device type, e.g. the disk type of an SSD could be set to an HDD. This behavior consequently
changes various parameters such as read-ahead settings, disk I/O throttling, etc., which normally have different behavior depending on the
underlying device type.
COMMANDS
Common command parameters:
o mount - the mount point to be used in the command
o profile-name - the name of a profile as shown in dmc list
o profile-index - the index of a profile as shown in dmc list
dmc start mount [profile-name|profile-index [-boot]]
Start the Disk Mount Conditioner on the given mount point with the current settings (from dmc status) or the given profile, if pro-
vided. Optionally configure the profile to remain enabled across reboots, if -boot is supplied.
dmc stop mount
Disable the Disk Mount Conditioner on the given mount point. Also disables any settings that persist across reboot via the -boot flag
provided to dmc start, if any.
dmc status mount [-json]
Display the current settings (including on/off state), optionally as JSON
dmc show profile-name|profile-index
Display the settings of the given profile
dmc list
Display all profile names and indices
dmc select mount profile-name|profile-index
Choose a different profile for the given mount point without enabling or disabling the Disk Mount Conditioner
dmc configure mount type access-time read-throughput write-throughput [ioqueue-depth maxreadcnt maxwritecnt segreadcnt segwritecnt]
Select custom parameters for the given mount point rather than using the settings provided by a default profile.
See dmc list for example parameter settings for various disk presets.
o type - 'SSD' or 'HDD'. The type determines how various system behaviors like disk I/O throttling and read-ahead algorithms affect the
issued I/O. Additionally, choosing 'HDD' will attempt to simulate seek times, including drive spin-up from idle.
o access-time - latency in microseconds for a single I/O. For SSD types this latency is applied exactly as specified to all I/O. For HDD
types, the latency scales based on a simulated seek time (thus making the access-time the maximum latency or seek penalty).
o read-throughput - integer specifying megabytes-per-second maximum throughput for disk reads
o write-throughput - integer specifying megabytes-per-second maxmimu throughput for disk writes
o ioqueue-depth - maximum number of commands that a device can accept
o maxreadcnt - maximum byte count per read
o maxwritecnt - maximum byte count per write
o segreadcnt - maximum physically disjoint segments processed per read
o segwritecnt - maximum physically disjoint segments processed per write
dmc help | -h
Display help text
EXAMPLES
dmc start / '5400 HDD'
Turn on the Disk Mount Conditioner for the boot volume, acting like a 5400 RPM hard drive.
dmc configure /Volumes/ExtDisk SSD 100 100 50
Configure an external disk to use custom parameters to degrade performance as if it were a slow SSD with 100 microsecond latencies,
100MB/s read throughput, and 50MB/s write throughput.
IMPORTANT
The Disk Mount Conditioner is not a 'simulator'. It can only degrade (or 'condition') the I/O such that a faster disk device behaves like a
slower device, not vice-versa. For example, a 5400 RPM hard drive cannot be conditioned to act like a SSD that is capable of a higher
throughput than the theoretical limitations of the hard disk.
In addition to running dmc stop, rebooting is also a sufficient way to clear any existing settings and disable Disk Mount Conditioner on
all mount points (unless started with -boot).
SEE ALSO nlc(1)
January 2018 DMC(1)