IBM Flex System V7000 User Manual

192 pages

To Next Page

To Previous Page

44 IBM Flex System V7000 Storage Node Introduction and Implementation Guide

The control enclosure can support a combination of up to nine expansion enclosures using a

combination of internal IBM Flex System V7000 Expansion Enclosures (maximum 2) and

external IBM Storwize V7000 Expansion Enclosures (maximum 9) connected through the

SAS2 connection on each of the control canisters. With the additional expansions, you are

capable of up to 240 disks drives; or a maximum capacity of 348 TB per control enclosure.

2.3.1 IBM Flex System V7000 Storage Node capabilities

For a complete and updated list of IBM Flex System V7000 Storage Node configuration limits

and restrictions, see the following website:

http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004114

2.3.2 IBM Flex System V7000 Storage Node functions

The following functions are available with IBM Flex System V7000 Storage Node:

򐂰 Thin provisioning (no license required):

Traditional fully allocated volumes allocate real physical disk capacity for an entire volume

even if that capacity is never used. Thin-provisioned volumes allocate real physical disk

capacity only when data is written to the logical volume.

򐂰 Volume mirroring (no license required):

Provides a single volume image to the attached host systems while maintaining pointers to

two copies of data in separate storage pools. Copies can be on separate disk storage

systems that are being virtualized. If one copy is failing, IBM Flex System V7000 Storage

Node provides continuous data access by redirecting I/O to the remaining copy. When the

copy becomes available, automatic re-synchronization occurs.

򐂰 FlashCopy (included with the base IBM Flex System V7000 Storage Node license):

Provides a volume level point-in-time copy function for any storage being virtualized by

IBM Flex System V7000 Storage Node. This function is designed to create copies for

backup, parallel processing, testing, and development, and have the copies available

almost immediately.

IBM Flex System V7000 Storage Node includes the following FlashCopy functions:

– Full / Incremental copy:

This function copies only the changes from either the source or target data since the

last FlashCopy operation and is designed to enable completion of point-in-time online

backups much more quickly than using traditional FlashCopy.

– Multitarget FlashCopy:

IBM Flex System V7000 Storage Node supports copying of up to 256 target volumes

from a single source volume. Each copy is managed by a unique mapping and, in

general, each mapping acts independently and is not affected by other mappings

sharing the source volume.

– Cascaded FlashCopy:

This function is used to create copies of copies and supports full, incremental, or

nocopy operations.

– Reverse FlashCopy:

This function allows data from an earlier point-in-time copy to be restored with minimal

disruption to the host.

Other manuals for IBM Flex System V7000

Installation Guide56 pages

Need help?

Do you have a question about the IBM Flex System V7000 and is the answer not in the manual?

IBM Flex System V7000 Specifications

General

Form Factor	2U
Model	IBM Flex System V7000
Category	Storage
Power Supply	Dual redundant power supplies
Storage Controller	Dual active-active controllers
RAID Levels	RAID 0, 1, 5, 6, 10
Maximum Drives	240
Expansion Enclosures	Up to 9
Drive Types Supported	SSD, HDD
Host Interface Ports	8 Gbps FC
Scalability	Scalable with expansion enclosures
Operating Temperature	5°C to 40°C
Management Interface	Web-based GUI, CLI, SMI-S