topic Re: adding a disk to an Autoraid unit in Disk Enclosures

adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 09:24:28 GMT

Hi,

i have a customer running with an AutoRaid 12H model A3700B and they need to expand some logical volumes. They have a new 18gb disk to put in the unit but what i need to know is how to configure this disk so they can allocate the space from it to an existing volume group?

Sorry if this is an easy question but I have never used these older autoraid units.

Re: adding a disk to an Autoraid unit

Jeroen Peereboom — Tue, 24 Feb 2004 09:29:03 GMT

You can use SAM to do that. You have an additional menu for your autoraid (as I can remember it correctly).

JP.

Re: adding a disk to an Autoraid unit

Rainer von Bongartz — Tue, 24 Feb 2004 09:29:56 GMT

check (e.g. using SAM) that the AUTO_INCLUDE option is on.

If so, simply insert the disk into the cabinet.

Regards
Rainer

Re: adding a disk to an Autoraid unit

Hoefnix — Tue, 24 Feb 2004 09:32:25 GMT

As far as I can remember you can create a new LUN using SAM.
After you have created the LUN(or multiple LUN'S) you are able to extend a volumegroup with the new create LUN .The extend the lvols etc..

It will be possible to do this from commandline, but I don't remember how.

HTH,
Peter

Re: adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 09:33:10 GMT

is the AUTO_INCLUIDE parameter in a file in rc.config.d??????

Also once this disk is in can it only be allocated to one VG or can it span multiple VG's?

Thanks for your help,

Scott.

Re: adding a disk to an Autoraid unit

Rainer von Bongartz — Tue, 24 Feb 2004 09:40:26 GMT

Scott,

use SAM/disk and filesystems/disk devices/HP Auto Raid disk controller

use modify to see the AUTO INCLUDE button
(see attachment)

To use this disk you have to bind a LUN to it

Regards
Rainer

Re: adding a disk to an Autoraid unit

Pete Randall — Tue, 24 Feb 2004 09:41:54 GMT

Scott,

The Auto Include is a feature of the array itself and is configured through the control panel menus. It is on by default (and rarely changed). However, if a disk was used by another array previously, it will not be automatically included and you have manually "Include Disk" via the control panel menus.

Also, a disk can belong to only one VG by definition.

Pete

Re: adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 09:42:33 GMT

Thanks rainer,

so does that mean I can create multiple LUNS from the one disk then allocate each LUN to a VG? or is it that a disk can only belong to one LUN?

Re: adding a disk to an Autoraid unit

Pete Randall — Tue, 24 Feb 2004 09:44:00 GMT

Scott,

I should mention that some of the array configuration features are available via the command line and even through SAM. Check they man pages on arraycfg, arraydsp, arrayfmt, arraymgr for details, as I can't remember that far back.

Pete

Re: adding a disk to an Autoraid unit

Patrick Wallek — Tue, 24 Feb 2004 09:46:12 GMT

Once the disk is in the AutoRaid, you will NOT see the individual disk. All you will see is additional capacity available to the AutoRaid.

What you do with that additional capacity is entirely up to you. You can create another LUN to use some of that capacity and then that LUN can be vgextended into an existing VG, then an LV extended, or you can create a new VG it is entirely up to you.

Re: adding a disk to an Autoraid unit

Rainer von Bongartz — Tue, 24 Feb 2004 09:47:24 GMT

Scott,
the second is true

a disk can only belong to one LUN

Regards
Rainer

Re: adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 09:49:42 GMT

man you lot are quick of the mark...LOL!!!!

Thanks for all the great replies, I have just tried to asign you all pojts but its not working, will try again later.

Scott.

Re: adding a disk to an Autoraid unit

Patrick Wallek — Tue, 24 Feb 2004 10:01:11 GMT

Rainer,

That is not entirely true. With the AutoRaid, when you create a LUN the unit itself can potentially spread that amount over ALL disks in the unit. You have absolutely no control over what disks belong to what LUNs. So potentially any disk could be be a part of ALL LUNs on the unit.

Once the disk is inserted into the AutoRaid, you must stop thinking of it as an individual disk. Think of it instead as just additional storage capacity. That storage can potentially be used for anything the AutoRaid sees fit to use it for.

Re: adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 10:03:41 GMT

yep thats what I thought Patrick, thanks for confirming that for me. I expect this is an impossible question but can I tell how much usable space I can expect from the 18gb disk I am adding?

Re: adding a disk to an Autoraid unit

Rainer von Bongartz — Tue, 24 Feb 2004 10:09:25 GMT

Patrick,

That' s true of course; I was thinking of Scott's jobs to extend the 12H.

As far as I know there is no way to extend a LUN (please correct me if I'm wrong) so his only option is to create a new LUN which will use this disk (among with the free space on other disks if available).

Regards
Rainer

Re: adding a disk to an Autoraid unit

Patrick Wallek — Tue, 24 Feb 2004 10:11:31 GMT

The only thing I can think of is to do is to check the array stats before you add the disk and then again after and see what changes.

Are there currently 18GB drives in the array?

Re: adding a disk to an Autoraid unit

A. Clay Stephenson — Tue, 24 Feb 2004 10:12:18 GMT

It's not possible to know without knowing your present configuration. It could range from 0 (even less than 0 if you are replacing a larger drive with a smaller) to nearly 18GB.

Do this:
arraydsp -i
to get the array_id
then arraydsp -a array_id and post those results.

It will then be possible to tell you how much additional capacity, you can expect.

Re: adding a disk to an Autoraid unit

Rainer von Bongartz — Tue, 24 Feb 2004 10:14:30 GMT

Scott,

check out this link for capacity info on the 12H

http://h20015.www2.hp.com/hub_search/document.jhtml?lc=en&docName=lpg75000

Regards
Rainer

Re: adding a disk to an Autoraid unit

Scott Dunkley — Tue, 24 Feb 2004 10:37:20 GMT

here is the output from the array command mentioned a c ouple of posts up. So can i tell from this how much space I can expect to be able to use from the 18gb disk we are going to add?

ishpk360# arraydsp -i
Arrays known to the ARMServer:
Array with S/N: 000000105179
ishpk360# arraydsp -a 000000105179

Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
----------------------------------------------------
Array State = READY
Server name = ishpk360
Array type = 3
Mfg. Product Code = IJMTU00004

--- Disk space usage --------------------
Total physical = 112881 MB *
Allocated to LUNs = 70000 MB *
Used as Active Hot spare = 17366 MB *
Used by non-included disks = 0 MB *
Used for Redundancy = 24790 MB *
Unallocated (avail for LUNs) = 725 MB *
-----------------------------------------

Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
----------------------------------------------------

LUN 0:
Capacity (MB=2^20) = 4000 MB *
Maximum block addr = 8192000
Block length = 512

LUN 1:
Capacity (MB=2^20) = 6000 MB *
Maximum block addr = 12288000
Block length = 512

LUN 2:
Capacity (MB=2^20) = 12000 MB *
Maximum block addr = 24576000
Block length = 512

LUN 3:
Capacity (MB=2^20) = 12000 MB *
Maximum block addr = 24576000
Block length = 512

LUN 4:
Capacity (MB=2^20) = 12000 MB *
Maximum block addr = 24576000
Block length = 512

LUN 5:
Capacity (MB=2^20) = 12000 MB *
Maximum block addr = 24576000
Block length = 512

LUN 6:
Capacity (MB=2^20) = 12000 MB *
Maximum block addr = 24576000
Block length = 512

Total capacity allocated to LUNs = 70000 MB *

Information for disk in slot A1:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 843700007904
Firmware revision = HP05
Drive ID number = FFFFFFFD AB3835D
Volume set serial no. = 3160 2
Recovery Maps are on this disk.

Information for disk in slot B1:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 102400007904
Firmware revision = HP05
Drive ID number = FFFFFFFD AB381C0
Volume set serial no. = 3160 2
Recovery Maps are on this disk.

Information for disk in slot A2:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 044200007905
Firmware revision = HP05
Drive ID number = FFFFFFFD AB3AA72
Volume set serial no. = 3160 2

Information for disk in slot B2:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 835800007904
Firmware revision = HP05
Drive ID number = FFFFFFFD AB3830E
Volume set serial no. = 3160 2

Information for disk in slot A3:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 554400007905
Firmware revision = HP05
Drive ID number = FFFFFFFD AB3AAD8
Volume set serial no. = 3160 2

Information for disk in slot B3:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 540800007924
Firmware revision = HP14
Drive ID number = FFFFFFFD A313EF4
Volume set serial no. = 3160 2

Information for disk in slot A4:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 633700007904
Firmware revision = HP05
Drive ID number = FFFFFFFD AB382F9
Volume set serial no. = 3160 2

Information for disk in slot B4:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST39173WC
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = 770200007904
Firmware revision = HP05
Drive ID number = FFFFFFFD AB38466
Volume set serial no. = 3160 2

Information for disk in slot A5:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST19171N
Capacity = 8683 MB *
Max. block addr = 17783111
Block length = 512
Serial number = LAK63020
Firmware revision = HP06
Drive ID number = E281 9
Volume set serial no. = 3160 2

Information for disk in slot B5:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST318404LC
Capacity = 17366 MB *
Max. block addr = 35566479
Block length = 512
Serial number = 699Z00002128
Firmware revision = HP04
Drive ID number = FFFFFFFD14000003
Volume set serial no. = 3160 2

Information for disk in slot A6:
Disk State = INCLUDED
Vendor = SEAGATE
Product ID = ST318404LC
Capacity = 17366 MB *
Max. block addr = 35566479
Block length = 512
Serial number = 6G8D00007127
Firmware revision = HP04
Drive ID number = FFFFFFFD14000003
Volume set serial no. = 3160 2

Total capacity of all installed physical disks = 112881 MB *

Information for controller X:
Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
Primary = TRUE
SCSI Address = 5
Serial number = R88OADF126401111
Paired serial number = R88OADF126321111
Product revision = HP62

Information for controller Y:
Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
Primary = FALSE
SCSI Address = 5
Serial number = R88OADF126321111
Paired serial number = R88OADF126401111
Product revision = HP62

Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
----------------------------------------------------
Overall State of Array = READY
Array configuration:
Active Hot Spare Desired = ENABLED
Auto Include = ENABLED
Auto Rebuild = ENABLED
Rebuild Priority = HIGH
Capacity Depletion Threshold = 0%
Write Working Set Interval = 8640 seconds
Language = ENGLISH
Log Full Warning = DISABLED
Volume Set Partitioning = DISABLED
Format Pattern Fill = DISABLED
Subsystem Type ID = 12
LUN Creation Limit = 8
Maximum LUN Creation Limit = 8
Array SCSI configuration:
Controller X SCSI Address = 5
Controller Y SCSI Address = 5
Write Cache = DISABLED
Read Cache = DISABLED
SCSI Parity Checking = ENABLED
SDTR = ENABLED
WDTR = ENABLED
Terminator Power = ENABLED
Unit Attention = ENABLED
Disable Remote Reset = ENABLED
Secondary Controller Offline = DISABLED
Very Early Busy = DISABLED
Queue Full Threshold = 1952
Maximum Queue Full Threshold = 1952
Simplified Resiliency Setting = Normal
Single Controller Warning = ENABLED
Lock Write Cache On = TRUE
Disable NVRAM on WCE False = FALSE
Disable NVRAM with One Ctrlr = TRUE
Disable NVRAM on UPS absent = FALSE
Force Unit Access Response = 0
Disable Read Hits = FALSE
Resiliency Threshold = 4

Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
----------------------------------------------------
Raid 0/1 blocks = 39769728
Raid 0/1 block length = 512
Raid 0/1 capacity = 19418 MB *

Vendor ID = HP
Product ID = C5447A
Array serial number = 000000105179
----------------------------------------------------
Fan F1 = GOOD
Fan F2 = GOOD
Fan F3 = GOOD
Power supply PS1 = GOOD
Power supply PS2 = GOOD
Power supply PS3 = GOOD

Controller X:
Overall state = GOOD
Battery #0 state = GOOD
Battery #1 state = GOOD
DRAM #0 state = GOOD
NVRAM #0 state = GOOD
NVRAM #1 state = GOOD
Controller Y:
Overall state = GOOD
Battery #0 state = GOOD
Battery #1 state = GOOD
DRAM #0 state = GOOD
NVRAM #0 state = GOOD
NVRAM #1 state = GOOD

Re: adding a disk to an Autoraid unit

A. Clay Stephenson — Tue, 24 Feb 2004 10:51:36 GMT

I assume that you are going to replace A5 (9GB) with an 18GB unit. Because this is the 4th (actually, anything above the 2nd) 18GB unit, you will gain almost 9GB capacity. NOTE: You will gain even more (an additional 18GB) if you set "Active Hot Spare" to OFF. This will cost you the ability to automatically rebuild after a failed drive and some performance because less space is reserved for RAID 1/0 but capacity may be paramount in your case.

NOTE: You are now at 7 LUN's; only 1 more can be created so if you want to use all the capacity of this new disk, you need to asign all the space to the newly created LUN.