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Dell PowerMax and VMAX Family Solutions Design 2023 > PowerMax and VMAX Family Solutions Design (PowerMax and VMAX All Flash Design Options) > Flashcards

PowerMax and VMAX Family Solutions Design (PowerMax and VMAX All Flash Design Options) Flashcards

(38 cards)

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1
Q

What PowerMax components must be balanced across engines?

A

RAID Groups
IO Modules
Emulations
Cache
DAEs

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2
Q

What are the max IOPS on PowerMax 2000?

A

2.7M

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3
Q

What are the max IOPS on PowerMax 8000?

A

15M

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4
Q

What are the max IOPS on VMAX 250F?

A

1M

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5
Q

What are the max IOPS on VMAX 950F?

A

6.7M

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6
Q

What is the usable capacity on PowerMax/VMAX?

A

physical capacity that is stored within Storage Resource Pools

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7
Q

How is usable capacity accessed on PowerMax/VMAX?

A

accessed by hosts using thin provisioned devices called TDEVs

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8
Q

What is the TDEV capacity on PowerMax/VMAX?

A

effective capacity

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9
Q

What is true about adding drives on PowerMax/VMAX?

A

can intermix drive sizes in the same system

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10
Q

What is Automated Data Placement on PowerMax/VMAX?

A

ability of system to intelligently manage data placement between two different drive technologies in the same system

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11
Q

What are Advanced Wear Analytics on PowerMax/VMAX?

A

help to manage drives in storage tier and make it easy to add and rebalance

ensure write distribution

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12
Q

What PowerMax/VMAX system doesn’t support different cache sizes between engines?

A

VMAX 950F

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13
Q

When does PowerMax 2000 support engines w/ different cache sizes?

A

in dual Brick systems only

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14
Q

When does PowerMax 8000 support engines w/ different cache sizes?

A

requires minimum of 4 bricks

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15
Q

When does VMAX 950F support engines w/ different cache sizes?

A

in dual Brick systems only

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16
Q

What is the Optimized service level?

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A

designed to use all allowable resources and it not managed to assist any other SLs

no target, upper or lower response time

17
Q

What attributes do Bronze and Silver SLs have?

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A

have target, upper, and lower response time designed to allow higher priority SLs to be unaffected

18
Q

How are Bronze and Silver SLs designed?

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A

such that their average response time will be greater than or equal to the lower response limit

19
Q

What attributes do Gold, Platinum and Diamond SLs have?

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A

have target and upper response time limit

have highest priority for performance

20
Q

How is RAID setup in PowerMax/VMAX?

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A

use a single RAID scheme for the entire system

all additional bricks and devices use same RAID scheme as initial usable capacity regardless of drive size by new drive pack

21
Q

How is the RAID determined on PowerMax/VMAX?

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A

determined by initial usable capacity

22
Q

What RAID schemes are supported on PowerMax 2000?

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A

RAID 5 (7+1) default
RAID 5 (3+1)
RAID 6 (6+2)

23
Q

What RAID schemes are supported on PowerMax 8000?

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A

RAID 5 (7+1) default
RAID 6 (6+2)

24
Q

What RAID schemes are supported on VMAX 250F?

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A

RAID 5 (7+1) default
RAID 5 (3+1)
RAID 6 (6+2)

25
What RAID schemes are supported on VMAX 950F?
RAID 5 (7+1) default RAID 6 (14+2)
26
How does RAID 5 work?
uses rotating parity across all drives in the group
27
How does RAID 6 work?
uses both horizontal and diagonal parity distributed across all drives in group
28
What are the performance characteristics of RAID 5?
Fast Read Good Write
29
What are the performance characteristics of RAID 6?
Fast Read Fair Write
30
What is the typical workload skew for storage systems?
85/15
31
What are the available IO Modules on PowerMax?
iSCSI (10G) Fibre Channel (16G, 32G) eNAS (10G SFP or Ethernet) eNAS Tape Backup (8G FC) FICON (16G)
32
What IO Module is only available on PowerMax 8000 and VMAX 950F?
FICON can be single or multimode
33
What IO Modules only come w/ 2 ports on PowerMax?
eNAS eNAS Tape Backup
34
What are the IO Modules available on VMAX?
Fibre Channel (8G, 16G) iSCSI (10G) eNAS (10G SFP/Ethernet) eNAS Tape Backup (8G FC) FICON (16G) SRDF (Ethernet)
35
What protocol is available on PowerMax but not VMAX?
NVMe/FC must have 32G FC IO Module
36
How does PowerMax/VMAX scale up?
adding capacity packs each pack has multiples of 13TBu (11 or 13TBu if it's a VMAX 250F)
37
How does PowerMax/VMAX scale out?
adding more bricks w/ included capacity in the system
38
How must PowerMax engines be configured?
all engines must be configured identically w/ respect to SCM for IO balance same RAID scheme

Dell PowerMax and VMAX Family Solutions Design 2023 (34 decks)

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