05-31-2005
updating ssa
I am in the process of updating ssa adapters, drives and enclosures and wanted to know if there are any caveats that anyone would like to share. The documentation is not very clear on the ordering of the updates.
Any tips would be appreciated.
10 More Discussions You Might Find Interesting
1. AIX
Hi
Can I add disks on the fly to extend the capacity of an existing RAID 5 volume?
It's created on a 4P Advanced SSA Raid Adapter.
I need to extend a volume group, so I figured it would be easiest to extend the "physical disk" which is a RAID5 volume.
Thanks. (1 Reply)
Discussion started by: osee
1 Replies
2. AIX
Helo:
We updated form AIX 4.3.3 to AIX 5.1-7 and after this we spent more than double time in read from external disks. Aparently the ssa cards microcode is at last level and all the ptf and apars are instaled.
Out backups expent more than double time, but curiously in read only, if we write in... (0 Replies)
Discussion started by: Javier Gutierre
0 Replies
3. AIX
I've a problem with an IBM StorageWorks - Seagate SSA drive, model ST373453LC (IBM P/N 24P3733, Type S53D073, 72,8 GB 15K - USCSI 4 - 320 SSA). I bought this disk used but working; it came from an unknown IBM SSA storage array. I've removed the SCA - SSA adapter (IBM 18P3051 - 001 - R0) and i tried... (0 Replies)
Discussion started by: Linolinux
0 Replies
4. AIX
hi all,
i have an p620 server. it has 2 scsi 18gb disks for aix4.3 OS and 3 ssa disks for database and an serialRAID adapter. 3 ssa disks configured raid level 5.
to increase capacity of the datavg, i buy 2 ssa 18gb disks. but i can not add them to the existing datavg. i did the following... (1 Reply)
Discussion started by: tinhlx
1 Replies
5. AIX
Hi,
Do you have procedures to migrate ssa disks to san disk?
I don't have testing environment and I want my file system be migrated one at a time. I want it to be fast, I have only 15-20 hours to do it on every sunday 1PM till monday 7am. My largest file system is about 150G.
The AIX is... (0 Replies)
Discussion started by: itik
0 Replies
6. AIX
Hi guys,
I'd like to share my migration/mirroring of ssa to san. No downtime for users, probably I/O performance.
here's the step:
1 After the lun had been carved on the SAN and the connections had been done on AIX fiber card
2 “lspv” and look for the new SAN hdisk? on the bottom, say... (1 Reply)
Discussion started by: itik
1 Replies
7. AIX
Hi All,
What's the proper procedure for removing SSA arrays? Is the procedure like these?
- rmdev ssa disk
- physical turn off the ssa
- cfgmgr
There's no more filesystem or logical volume on it. It's just pdisk and hdisk.
Thanks in advance,
itik (3 Replies)
Discussion started by: itik
3 Replies
8. AIX
Hi Experts,
I have configured A D40 Array. There is an faulty disk which is not part of an raid volume but shows fault in the diagnostics.
pdisk15 U0.1-P1-I1/Q1-W40AA83CC2400D
SSA160 Physical Disk Drive ( MB)
Is there a way to stop this... (2 Replies)
Discussion started by: vuppala360
2 Replies
9. Shell Programming and Scripting
Hello,
I read and search through this wonderful forum and tried different approaches but it seems I lack some knowledge and neurones ^^
Here is what I'm trying to achieve :
file1:
test filea 3495;
test fileb 4578;
test filec 7689;
test filey 9978;
test filez 12300;
file2:
test filea... (11 Replies)
Discussion started by: mecano
11 Replies
10. AIX
Hi all,
How to view more info about this error message that i am keep on getting.
Tried "errpt -a" but the output is huge.
Thanks in advance! (2 Replies)
Discussion started by: lramsb4u
2 Replies
LEARN ABOUT REDHAT
slaed4
SLAED4(l) ) SLAED4(l)
NAME
SLAED4 - subroutine computes the I-th updated eigenvalue of a symmetric rank-one modification to a diagonal matrix whose elements are given
in the array d, and that D(i) < D(j) for i < j and that RHO > 0
SYNOPSIS
SUBROUTINE SLAED4( N, I, D, Z, DELTA, RHO, DLAM, INFO )
INTEGER I, INFO, N
REAL DLAM, RHO
REAL D( * ), DELTA( * ), Z( * )
PURPOSE
This subroutine computes the I-th updated eigenvalue of a symmetric rank-one modification to a diagonal matrix whose elements are given in
the array d, and that D(i) < D(j) for i < j and that RHO > 0. This is arranged by the calling routine, and is no loss in generality. The
rank-one modified system is thus
diag( D ) + RHO * Z * Z_transpose.
where we assume the Euclidean norm of Z is 1.
The method consists of approximating the rational functions in the secular equation by simpler interpolating rational functions.
ARGUMENTS
N (input) INTEGER
The length of all arrays.
I (input) INTEGER
The index of the eigenvalue to be computed. 1 <= I <= N.
D (input) REAL array, dimension (N)
The original eigenvalues. It is assumed that they are in order, D(I) < D(J) for I < J.
Z (input) REAL array, dimension (N)
The components of the updating vector.
DELTA (output) REAL array, dimension (N)
If N .ne. 1, DELTA contains (D(j) - lambda_I) in its j-th component. If N = 1, then DELTA(1) = 1. The vector DELTA contains the
information necessary to construct the eigenvectors.
RHO (input) REAL
The scalar in the symmetric updating formula.
DLAM (output) REAL
The computed lambda_I, the I-th updated eigenvalue.
INFO (output) INTEGER
= 0: successful exit
> 0: if INFO = 1, the updating process failed.
PARAMETERS
Logical variable ORGATI (origin-at-i?) is used for distinguishing whether D(i) or D(i+1) is treated as the origin.
ORGATI = .true. origin at i ORGATI = .false. origin at i+1
Logical variable SWTCH3 (switch-for-3-poles?) is for noting if we are working with THREE poles!
MAXIT is the maximum number of iterations allowed for each eigenvalue.
Further Details ===============
Based on contributions by Ren-Cang Li, Computer Science Division, University of California at Berkeley, USA
LAPACK version 3.0 15 June 2000 SLAED4(l)