RAID
Frequently Asked Questions |
How do I install the system?
PCI Host RAID:
Step 1: Install the PCI RAID
Controller into your server just like another scsi adapter
Step 2: When prompted, use the driver provided on the diskette
Step 3: Follow the installation guide on the screen to create your raid set(s) of choice
Step 4: From your operating system, format the raid set with your Operating System's File
System (ie. HTFS FAT32) like it's an external hard disk
Result: The RAID System simply appears as another large external disk drive to your server
SCSI Attached RAID:
Step 1: Create your raid
set(s) of choice from the LCD Panel or the RS-232 Port via VT-100 Terminal Emulation
Step 2: Map the raid set(s) to the appropriate host channels
Step 3: Attach your scsi cable from the host channel of the raid system to your server's
scsi host bus adapter
Step 4: From your operating system, format the raid set with your Operating System's File
System (ie. HTFS FAT32) like it's an external hard disk
Result: The RAID System simply appears as another large external disk drive to your server
FIBRE Attached RAID:
Step 1: Create your raid set(s) of choice from the LCD Panel or the RS-232 Port via VT-100
Terminal Emulation
Step 2: Map the raid set(s) to the appropriate host channels
Step 3: Attach your Fibre Cable from the host channel of the raid system to your server's
Fibre Channel host bus adapter or a Fibre Channel Hub/Switch
Step 4: From your operating system, format the raid set with your Operating System's File
System (ie. HTFS FAT32) like it's an external hard disk
Result: The RAID System simply appears as another large external disk drive to your server
NAS/Ethernet Attached RAID:
Step 1: Attach your ethernet cable from the raid system to your hub or switch
Step 2: Assign an IP address and Submask to the RAID from the front LCD Panel for the
Ethernet Controller
Step 3: From any workstation on your LAN/WAN, manage the RAID System from any standard web
browser with proper login and password
Step 4: Create your raid set under RAID Level 0, 1 or 5.
Step 5: Create one or more shares to partition the raid set for access
by different user profiles
Result: The RAID System simply appears as another NT, Unix and/or HTTP Volume over the
network. You can map a drive letter to the system just like as if it's another NT Volume
How do I expand the
system?
The RAID System can be expanded either by creating another raid set with the appropriate
number of disks, or it can also be expanded by adding one or more disks to an existing
raid set. Using the Dynamic Upgrade Feature, this raid expansion
can be upgraded without any system downtimes. (Available in SCSI-SCSI
and SCSI-Fibre RAID only.)
What is the maximum capacity
of the system?
PCI-SCSI: The maximum capacity of a PCI-SCSI RAID Set is 8 disks per channel over
2 disk channels for a total of 16 disks at 73.4GB each. Maximum
Capacity is 1.174TB
SCSI-SCSI Wide SCSI Mode (20MB/S): The maximum capacity of a SCSI-SCSI RAID Set is 15 disks per channel over 7 disk channels for a total of 105 disks at
73.4GB each. Maximum Capacity is 7.7TB
SCSI-SCSI Ultra2 SCSI Mode (80MB/S): The maximum capacity of a SCSI-SCSI RAID Set is 8 disks per channel over 7 disk channels for a total of 54 disks at
73.4GB each. Maximum Capacity is 3.96TB
Ultra2 SCSI Mode (80MB/S): The maximum capacity of a SCSI-SCSI RAID Set
is 8 disks per channel over 7 disk channels for a total of 54 disks at 73.4GB. Maximum
Capacity is 3.96TB
Ethernet RAID: The maximum capacity of an Ethernet RAID 6 disks 73.4GB
each. Maximum Capacity is 440.4GB.
UDSS with NAS Virtualization Engine: 30.64TB
How many raid sets
can I install?
Up to 8 raid sets may be created in any levels including 0, 1, 0+1, 3 and 5.
What Operating
Systems does the raid support?
SCSI Host Configurations:
Multiple Simultaneous Operating Systems Support including Windows NT 3.x/4.0, Windows
2000, Netware 3.x/4.x/5.0,
OS/2, SCO Unix, Linux, BSD Unix, MAC, Sun Solaris, HP/UX, AIX, SGI IRIX and Digital Unix.
Supports all SCSI host adapters that adhere to ANSI SCSI Specifications ANSI
X3.131-1994; SCSI-2, ANSI X3T10/1071D SCSI-3 Fast 20 (Ultra SCSI); ANSI X3.301/2-1998.
Commonly used Host Bus Adapters include: Adaptec (except MAC), ATTO, Q-Logic, Symbios
(LSI), FORMAC and Infortrend (2101).
Fibre Host Configurations:
Multiple Simultaneous Operating Systems Support including Windows NT 3.x/4.0, Windows
2000, Netware 3.x/4.x/5.0, OS/2,
SCO Unix, Linux, BSD Unix, MAC, Sun Solaris, HP/UX, AIX, SGI IRIX and Digital Unix.
Supports all Fibre Channel devices that adheres to the ANSI standards ANSI
X3.269-1996 and ANSI X3.230-1994 will be compatible. Commonly used Fibre Host Bus Adapters
include Emulex, Q-Logic and ATTO. Supports
Industry Standard Open Systems Fibre Channel Host Bus Adapters, MIAs,
Hubs, Switches and Management Softwares.
PCI Host
Configurations: MS-DOS (ASPI), Windows 95/98, Windows NT 4.0 (for x86
and DEC Alpha), Windows 2000, NetWare 3.x/4.x/5.0, OS/2, SCO OpenServer, SCO
UnixWare, Sun Solaris (for x86 and SPARC) and Linux
NAS/Ethernet Configurations: Windows NT 4.0, Netware IPX/IP, Unix (NFS)
& MAC.
UDSS with NAS Virtualization Engine: Windows NT 4.0, Windows 2000, Unix (NFS).
Can I boot from the
raid?
PCI-SCSI, SCSI-SCSI or SCSI-Fibre: Yes. Legacy RAID Subsystems can be used in conjunction with any internal disk or raid
subsystem, or can also be used as the only storage system attached to the server. The
server can be configured to either boot from an Internal Hard Disk/Raid and use the
External Raid for Data Storage, or be configured to boot from the raid with both Operating
System and Data residing on the raid subsystem.
NAS/Ethernet: No.
How does the NAS
(Network Attached Storage) RAID control Security?
First, a user account is established for each user who is to have
access to the Legacy NAS RAID. A user is added
to the Legacy NAS RAID Users List in the Users
Permissions Utility. The Users List has a total of 1000 slots. If you
have more than 1000 users who need to have access to the Legacy NAS
RAID, you should enable user autodeletion. (It is not as sinister as it sounds. No users are
harmed during the autodeletion process.) That’s the Remove Inactive Users option in the General System Utility.
When this option is enabled, a user is automatically deleted from the
Users List when he or she logs off the Legacy NAS RAID. User
autodeletion also works when NDS, Bindery, or Domain integration is in
effect. However, if User Quotas (a Permissions Utility) are enabled,
user autodeletion is automatically turned off.
Most admins find that it is easier to manage users and assign users
access privileges to shares when they are grouped together into, well,
uh, groups. If you’re thinking Groups Permissions Utility, you’re right on the money. You can define up to 125 Groups in the Legacy NAS RAID Groups List.
Users and groups are assigned access privileges to a share in the Share Permissions Utility. Click on the name of the share, then click on the Assign Access Rights link. The Users List and the Groups List
will be displayed. Click on the checkbox in the Access column next to the name of each user and each group you want
to have access to the share. The level of the access rights given to
the checked users and groups will be based on the attributes that have
been assigned to the share. Obviously, if it is a public share, access
rights need not be assigned. Everyone who has access to the Legacy NAS
RAID has access to a public share. And if a share has been set to hidden, it will not display in most directory listings, effectively restricting access to only those individuals who know of its existence.
One more thing, if you enabled user autodeletion, your share access
privileges should be assigned on the basis of group membership only.
Obviously, if a user’s name appears in the Users List only when he
is logged in to Legacy NAS RAID, you cannot be sure you will be
assigning access rights to all the users who should have them. Some of
the users may not be logged in at the time you are assigning access
rights.
How
does the NAS (Network Attached Storage) RAID integrate with Bindery
and Domain?
Bindery
and Domain integration is set up in the NCP Server and SMB Server Network
Utilities, respectively. First you have to identify the Bindery Server in the NCP Server Network Utility and the Primary Domain Controller and its IP address in the SMB Server Network Utility. Then you have to decide whether you want to leave the Auto Create
Users and Groups
options enabled (the default setting).
When the Auto Create Users and Auto Create Groups options are enabled,
user names and the names of the Bindery and Domain groups are then
automatically added to the respective lists as users log in, but only
after the user names have been authenticated by the named NetWare
Bindery (NCP server) or Windows Domain (SMB server).
This can be a real timesaving feature, particularly for populating the
Users List. In addition, since only the users who have actually logged
in to Legacy NAS RAID are added to the Users List, you avoid the
problem of adding users who will never use the file storage space, or
forgetting a user who will.
The way the group names are added to the Legacy NAS RAID Groups List
is slightly different depending on whether the environment is NCP or
SMB. Under NCP, the names of all the groups in the NetWare Bindery are
added to the Legacy NAS RAID Groups List.
Under SMB, when the first user logs in to the Legacy NAS RAID, after
the user has been authenticated, the names of the groups to which the
user belongs are added to the Groups List. When a second user logs in
and has been authenticated, his group memberships are checked against
the Groups List and any groups that are not already in the Groups List
are added. This process continues as subsequent users log in.
Under both NCP and SMB, as users log in for the first time, the
Bindery or Domain authenticates their user names. After
authentication, their names are added to the Legacy NAS RAID Users
List. New user names are checked against the groups in the Groups List
to determine which groups they are members of. New users will
automatically inherit the rights of the groups to which they belong,
relieving the admin of the responsibility of having to go into each
user’s profile and assign access rights to the shares to which he is
to have access. It’s much easier to control share access on the
basis of group membership.
There is a potential, albeit slight, downside to this whole business
of autocreating groups, both under NCP and SMB. The Legacy NAS RAID
Groups List has a limit of 125 groups. In a very large workgroup or
department with an extensive network, it is possible, though not
likely, that this limit could be exceeded. If there are more than 125
groups defined in your workgroup or department, you might want to turn
off Auto Create Groups in
both the NCP Server and SMB Server Network Utilities. Determine the groups you want to have access to Legacy NAS RAID and manually add the names of those
groups to your Groups List. You will ensure that only the groups you
want to have access to the Legacy NAS RAID will be in the Groups List.
User and group authentication has been discussed here as it relates to
new users and the autocreation of the Users List and the Groups List.
However, you should be reminded that users logging in to a Secure
System are authenticated by a NetWare Bindery, an NT Domain, or the
Legacy NAS RAID every time they log in to the Legacy NAS RAID, whether
or not the Auto Create options are enabled. In addition, NetWare
Bindery integration should not be confused with the NDS integration
features on the Legacy NAS RAID. Specifically, Auto Create is a
feature of NCP and affects the NetWare Bindery—it does not affect
how NDS works.
How
does the NAS (Network Attached Storage) RAID integrate with NDS?
If you
are using Legacy NAS RAID under NDS, you have the advantage of
managing users, groups, RAID groups, and shares using the NWAdmin
utility of the Novell NetWare NDS service. You can also use the
utilities in the Administration Toolbox in the Legacy NAS RAID Web browser interface.
NDS integration is set up using Legacy
NAS RAIDView, as described in Chapter
Five, Managing with Legacy NAS RAIDView. Users and groups in the
NetWare Directory can be given rights to shares on the Legacy NAS RAID
using NWAdmin. The process of granting rights to users, groups, or
branches using NWAdmin is as follows:
1 Double-click
on a Legacy NAS RAID volume object
to display all of the
directories in that volume.
2
Right-click on one of the directories
and select Details from the popup menu.
3 Click on the Trustees of this Directory button. You can add trustees to or remove trustees from the selected share.
Legacy
NAS RAID tracks 125 groups and 1000 users. When an NDS group is
granted rights to a share, it is added to the Groups List and takes up
one of the 125 slots. When an NDS user is granted rights to a share,
the user is added to Legacy NAS RAID’s User List, taking up one of
the 1000 slots.
Now, here’s the trick. As mentioned earlier, when a user becomes a
member of a group, he inherits all the rights assigned to that group.
When the user logs in to Legacy NAS RAID, he takes up one of the 1000
user slots in the Users List. But, when he logs out of the Legacy NAS
RAID, his name is removed from the Users List and his slot is freed
up. The most effective way to manage Legacy NAS RAID security under
NDS is to use NWAdmin to create several groups that are given access
rights to specific shares, and assign users to the appropriate groups.
Do not give individual users access to shares. Under this setup, the
1000-user limit will be reached only when 1000 users are actually
logged in at one time.
You should be aware that when a user logs out, or when you remove
rights from a user or group, it can take up to 30 minutes before the
user or group is removed from the Legacy NAS RAID Lists.
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