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Noté. / 5. Basé sur avis des utilisateurs
Technical white paper | HP Enterprise Virtual Array Storage and VMware vSphere 4.x and 5.x configuration best practices
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• Standby – The path to the Vdisk is inactive and must be activated before I/Os can be issued
• Unavailable – The path to the Vdisk is unavailable through this controller
• Transitioning – The Vdisk is transitioning between any two of the access types defined above
The following load-balancing I/O path policies are supported by vSphere 4.x and 5.x:
• Round Robin – ALUA-aware
• Most Recently Used (MRU) – ALUA-aware
• Fixed_AP – ALUA-aware (Introduced in ESX 4.1. Rolled into Fixed I/O in ESXi 5.x.)
• Fixed I/O – Not ALUA-aware
Because they are ALUA-aware, Round Robin and MRU I/O path policies first attempt to schedule I/O requests to a Vdisk
through a path that includes the managing controller.
For more information, refer to Configuring multi-pathing.
Vdisk follow-over
Another important concept that must be understood is Vdisk follow-over, which is closely associated with ALUA.
As described above, ALUA defines which controller in an asymmetric active-active array is the managing controller for a
Vdisk. In addition, follow-over ensures that, when the optimal path to the Vdisk changes, all hosts accessing the Vdisk
change their access paths to the Vdisk accordingly.
Follow-over capability is critical in a vSphere 4.x and 5.x cluster, ensuring that Vdisk thrashing
3
between controllers cannot
occur. With follow-over, all vSphere servers
4
accessing a particular Vdisk update their optimal Vdisk access paths
accordingly when the Vdisk is implicitly moved from one controller to the other.
Configuring EVA arrays
HP provides tools to help you configure and maintain EVA arrays. For example, intuitive Command View EVA can be used to
simplify day-to-day storage administration, allowing you to create or delete Vdisks, create data replication groups, monitor
the health of system components, and much more. For batch operations, HP recommends using Storage System Scripting
Utility (SSSU), a command-line tool that can help you quickly deploy large EVA configurations, back them up for future
deployments, and perform advanced administrative tasks.
When configuring a large number of Vdisks for a vSphere 4.x and 5.x implementation, such as that described in this paper,
you should configure the Vdisks to alternate between EVA controllers using either Path A-Failover/failback or Path B-
Failover/failback (see Vdisk provisioning).
Appendix A: Using SSSU to configure the EVA presents a sample script that creates multiple Vdisks, alternates path
preferences between two controllers, and presents the Vdisks to vSphere servers.
This section outlines the following options for configuring an EVA array:
• Using Command View EVA
• Running Command View EVA within a VM
• Using the HP Insight Control Storage Module for vCenter
3
Backward and forward transitioning
4
Also known as ESX servers
- HP Enterprise Virtual Array 1
- Storage and VMware vSphere 1
- Executive summary 4
- The challenges 4
- Key concepts and features 4
- ALUA compliance 5
- Configuring EVA arrays 6
- Using Command View EVA 7
- Disk group provisioning 13
- Vdisk provisioning 16
- • EVA Controllers 18
- Controller connections 20
- Front-end GbE and FC ports 20
- • Fixed_AP 24
- • Round robin 24
- • Fixed 24
- • Configure the Vdisk 25
- Configuring multi-pathing 27
- • SATP 28
- Displaying the SATP list 29
- Disk Group 33
- DR Group 33
- Upgrading EVA microcode 34
- Using VMFS 35
- Using RDM 35
- Comparing supported features 36
- Sizing the vSphere cluster 38
- Aligning partitions 38
- Optimizing queue depth 39
- Using adaptive queuing 39
- Optimizing I/O size 42
- • Plugin-less deployment 44
- VAAI operation concurrency 46
- ESX UNMAP support history 47
- UNMAP in ESXi 5.5 49
- Summary of best practices 51
- Summary 53
- Glossary 53
- Changing the default PSP 56
- Figure C-2. I/O routes 58
- Sample configuration 62
- Configuring the vSphere host 64
- Configuring the array 68
- Configuring the VM 69
- For more information 71
Electrolux EWT1366HDW manuales
Manuales del propietario y guías del usuario para Arandelas Electrolux EWT1366HDW.
Ofrecemos 1 manuales en pdf Electrolux EWT1366HDW para descargar gratis por tipos de documentos: Manual de usuario
Electrolux EWT1366HDW Manual de usuario (44 paginas)
Marca: Electrolux | Categoria: Washers | Tamaño: 14.67 MB |
Tabla de contenidos
7. РЕЖИМЫ
10
Индикатор
11
РУССКИЙ 13
13
РУССКИЙ 19
19
РУССКИЙ 21
21
5. PROGRAMY
29
Ukazovateľ
32
Úsporný
32
SLOVENSKY 35
35
SLOVENSKY 39
39
SLOVENSKY 41
41
SLOVENSKY 43
43
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