EVA 8100 adding new disk

[mrmo07]

Hi,

i have to install new 16 , 300GB HDD in EVA 8100.
where all previous HDD is 146 GB. now my plan is after install new 16 hdd i will make new disk gruop with 16 hdd. then i have to copy all data from existing diskgroup to new disk group.
could anybody halp me how can do it.

Regards/Morshed.

[Steven Clementi]

You don't need to create a new disk group.

Once you have all the disks inserted into the enclosures...

1. add all the disks to the existing disk group.

2. Wait for the leveling to complete. (This wil spread out all the data to ALL of the disks in the group)

3. Remove the 146GB disks, one at a time from the disk group.

4. Reuse the 146GB disks for something else.

5. Go home happy cause you saved yourself a lot of time.

6. Make sure you back up your data first.



Steven

[Bulent ILIMAN]

Steven's solution seems a good and clever one. The point here you should be aware that the space allocated for protection will be more, assuming you are using single protection level and dont change it, now your EVA is allocating 2x137GB approx space and will allocate 2x279GB as soon as you add 300 GB drives to the group. if your Vdisks are occupying more than 14x279GB in total than you will not be able to ungroup all of your 146GB drives.

[mrmo07]

Hi steven,

thanks for your reply.

but customers requirements is i have to create new disk group and it will be RAID 1+0. after that i have to copy data from existing diskgroup to new diskgroup as customer wants to separate DB and application into two separate group. please help me as described.

Regards,
Morshed.

[Bulent ILIMAN]

you bring new info to the table but still the solution is the same. actually raid state has nothing to do with the disk group. it is selected when a Vdisk was being created.

are your Vdisks RAID5, do you want to convert these to VR1?

if so you have two optons, obtain a temp BC licence if CU dont have, and after adding the 300GB drives (to the same or new group, makes no sense at that point, new group may be easier) shutdown the Database, create a snapclone with new raid level you want, after snapcloneing started, unpresent all VR5 drives and present new VR1 drives with exactly same LUN numbers,

you can need some operations on the os side also, to tell the os that disks are changed, but data didnot.

after the disk cloneing has finished you can split the clone and delete the VR5 ones, at that point you can delete the 146 GB if you did not create new DG, and when deletion finished, you can create a new DG with 146GB drives for application or what

[Bulent ILIMAN]

and I forgot the second option :)

it can be done within the OS side.

you create new DG with 300GB drives and VR1 LUNs as of CU request, then present them to the hosts, at that point OS of your host is the question. if it is HPUX, then you can extend the Volume Groups with new disks, move all the data to the new disks with simple pvmove command and reduce the old disks and unpresent them. if not HPUX, say windows then you need to copy them or backup and restore.

[Rob Leadbeater]

Hi,

Go back to your customer and ask them why they want to have the 16 new drives in a new disk group.

If the customer is talking about RAID 1+0 then they probably don't understand how the EVA works.

You don't mention the existing configuration, however as it's an EVA8100 I'll assume that the Disk Group with the 146GB disks has more than 16 disks. If so, then moving to a group with only 16 disks could actually reduce performance...

Regards,

Rob

[mrmo07]

hi ,

thanks all.

right now the have two disk group. one they r using for backup copy another one for DB and application.

now they want to make another diskgroup separate db from application means new diskgroup for application.

then they will copy all data from existing diskgroup to new diskgroup ( DB and APP) for test.
os is HP-UX 11iv1.so i have to create mount point for nw disk group.

if ok .then they will separate db and app.

this is cluster environment.

now advice.

[Rob Leadbeater]

Can you advise how many disks are in the existing disk groups ?

Regards,
Rob

[mrmo07]

sorry.

there are one disk group with 56 disk and two vdisk. 246 GB each HDD.

[Bulent ILIMAN]

It is clear that the 56 disk group will perform better than a 16 disk group whatever disks in the disk group will have small effect.

If I were you or your Customer, I would use 56x146GB disks for DB, having high R/W performance, and 16x300GB group for Application.

Or in best solution buy some more 300GB disks ;)

[mrmo07]

hi !

is there any firmware issue if i like to install new 300 gb hardisk ??

[Steven Clementi]

What version of XCS are you at now?

300GB disk support was added early on so you probably won't have any issues. (Especially since you have a 3rd generation EVA)


Steven

[mrmo07]

Hi,

storage system:
type:HSV210
Version:6110
software:CR0ECAxcsp-6110

current Disk drive:
firmware version:HP02

plz advise.

Rgds/Morshed.

[mrmo07]

Hi,

from new 30 HDD. 8 disk firmware is HP00 and rest of all HP02.

should i update all hp00 to hp02??

and what about controller.

Regards/Morshed.

[Uwe Zessin]

There is not a single firmware image for a disk drive models in an EVA.

It is possible that those are different drive models which require different firmware levels.

Best way is to get the current disk drive firmware bundle and let CV-EVA figure out which image to load into which disk drive:
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3351789&prodTypeId=329290&prodSeriesId=3302267&swLang=13&taskId=135&swEnvOID=54

[mrmo07]

hi,

should i make all disk drive firmware level same? or i can continue with the diff firmware version and is it ok if i continue with controller firmware xcs 6110? and cv 8 ?

Regards,
Morshed.

[Uwe Zessin]

It is possible that there are different disk drive models in the EVA, even for the same size/rotational speed (e.g. 300GB/15kRPM).

In many cases you CANNOT "make all disk drive firmware level same", because the drives are different.

Just let CV-EVA do the job for you by giving it the complete firmware bundle.

[mrmo07]

Hi Uwe Zessin ,

what is the effect of complete firmware bundle?

i m almost new to EVA. please let me know details.

Regards/Morshed.

[Uwe Zessin]

The firmware bundle is a .ZIP file that contains individual firmware images for all disk drives for which an update is available. You hand it over to CV-EVA and CV checks which disk drive models are in the EVA and applies the correct firmware image to one disk drive at a time.

CV-EVA skips disk drives if their firmware is current and it does them one by one so that the failure of a drive does not result in data loss (provided that no VRAID-0 data exists). Well, you're using CV V8, which gives a warning, but does not allow an upgrade in that situation.

The upgrade of a single drive takes about 30 seconds. You can easily calculate how long a larger EVA takes if all disk drives need an update.

Now, imagine how long it would take if you did that manually!!

[mrmo07]

Hi Uwe Zessin and all,

once again,
getting complex the scenario. i wanna discuss the whole case.
my system details:

Server: rp8440 (11iv1) and rp 3440 (11iv1)
-------------------------------------------
FC hba card:(from fcmsutil)
Driver Version = @(#) libfcd.a HP Fibre Channel ISP 23xx & 24xx Driver B.11.11.14 /ux/kern/kisu/FCD/src/common/wsio/fcd_init.c:Dec 12 2
007,00:42:46
-------------------------------------------
SAN Switch ( hp storage works 4/8 SAN switch):
Kernel: 2.4.19
Fabric OS: v5.1.0b
-------------------------------------------
CV EVA:8.0.0
RSM 4.0.8
-------------------------------------------
EVA 8100
controller firmware:XCS 6.110
-------------------------------------------
current installed HDD firmware level:HP02
-------------------------------------------

requirements:

i need to add on new 32 HDD. out of those 24 HDDs have HP02 firmware (existing HDD in the EVA has the same firmware, HP02), 8 HDDs are at HP00 firmware level.

if i consider upgrade it comes complex as in production. like CV-EVA with RSM, RSM with HP-UX version, EVA Controller firmware with SAN-Switch firmware version....and so on

can i add new HDDs stright away?

[Steven Clementi]

Yes... you can.


Steven

[mrmo07]

Hi steven,

should i have to upgrade HP00 to HP02 level for 8 disk.

Regards/Morshed.

[Bulent ILIMAN]

not a must, but I should. as Steven told it will take less than 10 minutes for 8 drives to complete.

[Steven Clementi]

As stated previously... there is no guarantee that you can upgrade the new drivers to HP02.

Each drive model... and there are MULTIPLE part numbers/models for many of the drives have different firmware.

In other words... you can have 2 of the same size/speed disk... with different "current" firmwares.. 1 might be HP02 and the other HP01. It all depends on the part number.

The short story is... insert the drives into the EVA, grab the latest EVA Disk HDD Firmware Bundle, and let the update process figure out which firmware it should get.

***The new drives might NOT get HP02 because it is a different model number than the drives you have already.


Steven