I have 2 servers configured exactly the same:
2 146GB mirrored sys volumes.
3 146GB Raid 5
1 146GB Hot spare.
5GB memory
NW 65 SP3 ( Not ready for SP5).
Arcserve 11.1
eTrust 7.1

I get out of memory errors at least twice a day and have to manually tune
the logical space using the NRM, and set file cache maximum size at the
console. At times the available logical space drops to zero then
gradually increases.
Below is the segstat file from one of the server:
Could someone please look at the stats and advise me on how to tune this
server .

*** Memory Pool Configuration for : XXXXXXX
Time and date : 02:51:32 PM 03/09/2006
Server version : NetWare 6.5 Support Pack 3
Server uptime : 1d 04h 03m 15s
SEG.NLM version : v1.72

0xFFFFFFFF --------------------------------------------------------------
| Kernel Reserved Space |
| |
| Size : 167,772,159 bytes (160.0 MB) |
| |
0xF6000000 --------------------------------------------------------------
| User Address Space (L!=P) |
| |
| User Pool Size : 771,751,936 bytes (736.0 MB) |
| High Water Mark : 3,355,443,200 bytes (3.13 GB) |
| |
0xC8000000 --------------------------------------------------------------
| Virtual Memory Cache Pool (L!=P) |
| |
| VM Pool Size : 2,281,701,376 bytes (2.13 GB) |
| Available : 1,605,693,440 bytes (1.50 GB) |
| Total VM Pages : 1,604,091,904 bytes (1.49 GB) |
| Free Clean VM : 1,588,076,544 bytes (1.48 GB) |
| Free Cache VM : 16,015,360 bytes (15.3 MB) |
| Total LP Pages : 4,096 bytes (4 KB) |
| Free Clean LP : 4,096 bytes (4 KB) |
| Free Cache LP : 0 bytes (0 KB) |
| Free Dirty : 0 bytes (0 KB) |
| VM Pages In Use : 1,597,440 bytes (1.5 MB) |
| NLM Memory In Use : 547,016,704 bytes (521.7 MB) |
| NLM/VM Memory : 543,358,976 bytes (518.2 MB) |
| Largest Segment : 23,326,720 bytes (22.2 MB) |
| High Water Mark : 614,625,280 bytes (586.2 MB) |
| |
0x40000000 --------------------------------------------------------------
| File System Cache Pool (L==P or L!=P) |
| |
| FS Pool Size : 1,067,462,656 bytes (1018.0 MB) |
| Available : 936,218,624 bytes (892.8 MB) |
| Largest Segment : 127,275,008 bytes (121.4 MB) |
| |
| NSS Memory (OFF) : 1,982,464 bytes (1.9 MB) |
| |
0x005FD000 --------------------------------------------------------------
| DOS / SERVER.NLM |
| |
| Size : 6,279,168 bytes (6.0 MB) |
| |
0x00000000 --------------------------------------------------------------

Top 6 Memory Consuming NLMs
NLM Name Version Date Total NLM Memory
================================================== ========================
======
1. NSS.NLM 3.22 Jun 7, 2005 169,565,744 bytes (161.7
MB)
2. NWMKDE.NLM 8.50 Oct 29, 2003 113,360,018 bytes (108.1
MB)
3. SERVER.NLM 5.70.03 May 23, 2005 91,276,666 bytes (87.0
MB)
4. DS.NLM 10552.60 Mar 30, 2005 39,203,854 bytes (37.4
MB)
5. INOSCAN.NLM 7.01 Apr 7, 2004 14,629,093 bytes (14.0
MB)
6. FATFS.NLM 1.21 Jan 12, 2005 5,699,780 bytes (5.4
MB)



Logical Memory Summary Information
================================================== ========================
======

File System Cache Information
FS Cache Free : 788,152,320 bytes (751.6 MB)
FS Cache Fragmented : 148,066,304 bytes (141.2 MB)
FS Cache Largest Segment : 127,275,008 bytes (121.4 MB)

Logical System Cache Information
LS Cache Free : 62,087,168 bytes (59.2 MB)
LS Cache Fragmented : 182,362,112 bytes (173.9 MB)
LS Cache Uninitialized : 320,872,448 bytes (306.0 MB)
LS Cache Largest Segment : 23,326,720 bytes (22.2 MB)
LS Cache Largest Position : B5838000

Summary Statistics
Total Free : 2,220,494,848 bytes (2.07 GB)
Total Fragmented : 330,428,416 bytes (315.1 MB)
Highest Physical Address : BFFCA000
User Space : 939,524,096 bytes (896.0 MB)
User Space (High Water Mark) : 3,355,443,200 bytes (3.13 GB)
NLM Memory (High Water Mark) : 614,625,280 bytes (586.2 MB)
Kernel Address Space In Use : 804,519,936 bytes (767.3 MB)
Available Kernel Address Space : 2,550,923,264 bytes (2.38 GB)


Memory Summary Screen (.ms)
================================================== ========================
======

KNOWN MEMORY Bytes Pages Bytes Pages
Server: 3220523056 786260 Video: 8192 2
Dos: 71632 17 Other: 131072 32

FS CACHE KERNEL NLM MEMORY
Original: 3216441344 785264 Code: 42209280 10305
Current: 936218624 228569 Data: 25456640 6215
Dirty: 0 0 Sh Code: 45056 11
Largest seg: 127275008 31073 Sh Data: 20480 5
Non-Movable: 12288 3 Help: 172032 42
Other: 72257536 17641 Message: 1253376 306
Avail NSS: 0 0 Alloc L!=P: 471953408 115223
Movable: 8192 2 Alloc L==P: 2248704 549
Total: 543358976 132656
VM SYSTEM
Free clean VM: 1588076544 387714
Free clean LP: 4096 1
Free cache VM: 16015360 3910
Free cache LP: 0 0
Free dirty: 0 0
In use: 1597440 390
Total: 1605693440 392015












Memory Configuration (set parameters)
================================================== ========================
======

Auto Tune Server Memory = ON
File Cache Maximum Size = 2452000000
File Service Memory Optimization = 0
Logical Space Compression = 1
Garbage Collection Interval = 299.9 seconds
VM Garbage Collector Period = 60.0 seconds
server -u<number> = 771751936



NSS Configuration File:
C:\NWSERVER\NSSSTART.CFG
------------------------------
/nocachebalance

/minbuffercachesize=204800





DS Configuration File:
SYS:\_NETWARE\_NDSDB.INI
------------------------------
File does not exist,
or is zero byte in size.

Server High/Low Water Mark Values
================================================== ========================
======

NLM Memory High Water Mark = 614,625,280 bytes
File System High Water Mark = 221,393 bytes

User Space Information:
User Space High Water Mark = 562,855,936 bytes
Committed Pages High Water Mark = 91 pages
Mapped VM Pages High Water Mark = 4,300 pages
Reserved Pages High Water Mark = 400,294 pages
Swapped Pages High Water Mark = 4,133 pages

Available Low Water Mark = 1,803,264,000
ESM Memory High Water Mark = 459 pages