First of all, my problem does not happen any more. I created the raid with sdb, sdc and sdd on April 11 at 09:35.
Until 11:32, sdd was very busy, then until 14:51, sdc was very busy.
Since then (3 days), the 3 disks are always under the same moderate load altogether (0-20%). The server is used by 5 graphic designers manipulating quite large files (100M-2G).
I ran some tests and the results leave me quite puzzled. So I created simultaneously 10 files. 1GB each. But all the load went on sda. Leaving sdb, sdc and sdd with a moderate 20% load.
The command:
The output of dstat:
Is /dev/zero an actual file of sda?
How do you interpret the results?
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)
I have a 3510 disk array attached to a T2000 server.
The dmesg command shows disk error as follows and is generated a couple of times during the day
Aug 18 03:35:51 myserver SUNWscsdMonitor: <rctrl6042> Standard General Event, CHL:2 ID:22 Drive NOTICE: Drive Recovered Error - 5F8E1F... (1 Reply)
Hi,
I have the Lacie Big Disk, which is a external hard drive enclosure in a hardware RAID0 array of 2x250GB disks. The RAID controller seems to have died, leaving me with 2 working hard drives but no way to get the data. I tried hooking the drives up to a windows machine and using Raid... (4 Replies)
I have read anecdotes about people installing RAID0 (RAID - Wikipedia, the free encyclopedia) on some of their machines because it gives a performance boost. Because bandwidth on the motherboard is limited, can someone explain exactly why it should be faster? (7 Replies)
So I have 2 solaris sun servers one with a disk array with 14 drives which I need to move to the other server. How do I move the disk array configured as a Raid 5 to another server without losing data? So far I know I'll connect the drive, run devfsadm, use format to verify the server see's... (5 Replies)
HI:
I have a DUAL redundant system running in HP-UX 10.20 ( 2 servers)
Both servers share an external SCSI disk array. Both server runs a Data base wich uses the disk array to write the data, and that is the way they share the information.
The way that the servers see the disk array, is like... (1 Reply)
Hello,
On 4/20/2018, we performed a disk replacement on our IBM 8202 P7 server. After the disk was rebuilt, the SAS Disk Array sissas0 showed a status of degraded. However, the pdisks in the array all show a status of active.
We did see a message in errpt. DISK ARRAY PROTECTION SUSPENDED.
... (1 Reply)
Hello,
On 4/20/2018, we performed a disk replacement on our IBM 8202 P7 server. After the disk was rebuilt, the SAS Disk Array sissas0 showed a status of degraded. However, the pdisks in the array all show a status of active.
We did see a message in errpt. DISK ARRAY PROTECTION SUSPENDED.
... (3 Replies)
Discussion started by: terrya
3 Replies
LEARN ABOUT OSF1
stripe
stripe(8) System Manager's Manual stripe(8)NAME
stripe - Stripes a file across several volumes in a file domain
SYNOPSIS
/usr/sbin/stripe -n volume_count filename
OPTIONS
Specifies the number of volumes the striped file crosses. The number of volumes must be greater than one.
OPERANDS
Specifies the name of the file to stripe.
DESCRIPTION
The stripe utility enables you to improve the read/write performance of a file. The stripe utility directs a zero-length file (a file with
no data written to it yet) to be spread evenly across several volumes within a file domain. As data is appended to the file, the data is
spread across the volumes. AdvFS determines the number of pages per stripe segment and alternates the segments among the disks in a sequen-
tial pattern.
Existing, nonzero-length files cannot be striped using the stripe utility. To stripe an existing file, create a new file, use the stripe
utility to stripe the new file, and copy the contents of the file you want to stripe into the new striped file. After copying the file,
delete the nonstriped file.
Once a file is striped, you cannot use the stripe utility to modify the number of disks that a striped file crosses. To change the volume
count of a striped file, you can create a second file with a new volume count, and then copy the contents of the first file into the second
file. After copying the file, delete the first file.
RESTRICTIONS
You cannot stripe a nonzero-length file or a file that is already striped.
EXAMPLES
The following example stripes the file abc across three volumes in the same file domain: # stripe -n 3 abc The following example stripes an
existing, nonzero-length file, foo, across three volumes in the same domain. First a new file, newfoo, is created and striped. Then, the
contents of file foo are copied to the new, striped file: # touch newfoo # stripe -n 3 newfoo # cp foo newfoo
SEE ALSO advfs(4), showfile(8)stripe(8)