RP 5470 expansion

[Dmitriy_16]

Current configuration consist of:
rp5470 Dual (cluster), 2CPU*750M,Memory 2G, Internal HDD 2*36G, 2*NIC, 2*FC, 2*VA7110(External HDD 8*36G),DDS4/2*FC SWITCH, 2*Rack, Terminal, HP-UX11.i/MC/SG/MD, 3Y7*24

During upgrade necessary to add next equipment for expansion:
Total CPU 4*750MHz CPU/4G Memory/(External HDD)14*36G Hard Disk For VA.

I have a list of question about this expansion
1.Increasing SWAP or not
# swapinfo
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 4194304 108452 4085852 3% 0 - 1 /dev/vg00/lvol2
reserve - 1516688 -1516688
memory 1565700 352012 1213688 22%

Do i need to increase SWAP space after adding 2G Memory (current configuration has 2G memory and 4G SWAP)?

2. Changing informix configuration
I have informix database running on server.
As i found out after adding 2 more CPU i need to modify /opt/informix/etc/onconfig file
next parameters
MULTIPROCESSOR 1 # 0 for single-processor, 1 for multi-processor
NUMCPUVPS 3 # Number of user (cpu) vps
SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to one

Which other configuration parameters i have to change for informix database if i will add 2 CPU and 2G memory?

3. Does somebody have plan or documentation how to make partitioning of newly added External Disk Space? I need to increase informix workdbs and support mirroring in both disk arrays.

[Steven E. Protter]

Question 1. No. If you are not paging, you don't have to increase swap.

2. Not my field, I'm an oracle man.

3. Is informix raw or cooked fs.

Here is an either or.

Try to handle mirroriing on the external storage array.

If you must use software mirroring, break mirror prior to starting this process.


Add space. Assign LUN to fiber card WWN
ioscan to detect
pvcreate to start disk step.



lvcreate a new logical volume
lvextend an existing logical volume

software mirror:
lvexend -m 1 /dev/vg##/lvol /dev/dsk/c1t1d1

newfs -F vxfs -o largefiles for a brand new fs
extendfs for extending an existing one.

Don't do the fs part if you are using raw data areas.

SEP

[Pete Randall]

1. See Steve's answer above. I would think you would probably want to increase it, but, as he says, if you're not using it why bother?

2. NUMCPVPS should be set to one less than actual physical CPUs - I believe this would make it 5 in your case. The reason is that Informix needs as many CPUs as you can give it, but if you don't reserve one for system work, the end result is uhmmmm undesirable.

3. Are the new disks going in the existing VA7110? If that's the case, you don't have to worry about connecting them, you just need to carve them up into LUN's as you have the existing ones and then either add them into existing Volume Groups or create a new VG for them. I would suggest a new VG, because your existing might not have MAXPE and PE size set high enough to accomodate the expansion. All you have to do then is carve them up into 2GBlogical volumes and link those logical volumes to Informix "chunks".


Pete

[Neritan Omari]

2. You should change the onconfig.aedb file under /home/informix/etc :

NUMCPUVPS 6
NETTYPE soctcp,3,100,CPU

These changes i have done on my system after CPU upgrade !


BR's
Neritan

[Neritan Omari]

Please ignore previous :

2. You should change the onconfig.aedb file under /home/informix/etc :

NUMCPUVPS 3
NETTYPE soctcp,3,100,CPU

These changes i have done on my system after CPU upgrade !


BR's
Neritan