[Technophobe]

Hi, I have an interesting problem, which maybe someone can shed some light on.

I have used both 4100 and 705N servers.

I have found the 4100 to be very relaible but I have had two 705N which appear to mess up the Raid 5 array from time to time

This generally happens when copying large numbers of (small) files from one place to another ie for mirroring or backup ..... I keep a large number of files spread across a few 4100 / 705n / 1100 servers in raid 5 where possible.

The problem is not catastophic as I can generally rebuild the raid, but this put the server off-line for some while and is annoying.

I have just loaded the latest troublsome 705 with 4 160Gb drives and all appeared to be fine , I then started to mirror another server and after about half an hour .......... Uggg

Both were running the 3.4.xx series SW (being the latest that can easily be obtained)

I assume the only real difference between the OSs is cosmetic, so Any ideas wht the Dells should appear to be more troublesome.

There a very large number of Incorrect Block Counts I've only pasted a few here for example.

The error log follows (in reverse chronological order):

File System Check : Incorrect block count I=1745664 (16 Should be 0) (Corrected) Disk 60000
RAID 5 22/6/2006 8:28:04
W File System Check : Incorrect block count I=1744896 (16 Should be 0) (Corrected) Disk 60000
RAID 5 22/6/2006 8:28:04
W File System Check : Incorrect block count I=1744128 (16 Should be 0) (Corrected) Disk 60000
RAID 5 22/6/2006 8:28:04
W File System Check : Incorrect block count I=1743360 (16 Should be 0) (Corrected)


Call Stack :
$002224EA
$0021CC66
$0021C79E
$002267F5
$00226981
$002088DC
$00208813
$0021F309
$0021A6F3
$0021FF77
$00205A41
$00205ACA
$0017610E
$0016A127
$0016A278
$00169B90
$0010413C
$001041C3
================================
System 22/6/2006 7:57:24
F PANIC : blkfree: freeing free block

Prior to this all appear to be OK.

Any thoughts would be most welcome
P.